Invention title: Detection system, detection method and program
Technical field
[0001]
　The present invention relates to detection systems, detection methods and programs.
Background technology
[0002]
　Documents 1 to 3 disclose a technique of photographing a vehicle from the front or diagonally forward and analyzing the image to detect the number of passengers.
[0003]
　Patent Document 4 analyzes each of a plurality of images of a vehicle continuously photographed to detect a person, and estimates which seat in the vehicle each of the detected people is sitting on based on the appearance of the vehicle in each image. Discloses a device that determines the number of people in a vehicle based on the number of seats determined to be seated.
[0004]
　Patent Document 5 discloses a reverse-way driving warning system that detects a reverse-way driving vehicle.
[0005]
　Patent Document 6 discloses a mounting device mounted on a moving body. The on-board device has a photographing means for photographing the front of the moving body, a means for detecting a change in the traveling direction of the moving body, and when a change occurs in the traveling direction of the moving body, the photographing direction of the photographing means is set in the traveling direction. It has a means for changing to follow the change.
Prior art literature
Patent documents
[0006]
Patent Document 1: International Publication No. 2014/061195
Patent Document 2: International Publication No. 2008/099146
Patent Document 3: International Publication No. 2011/128668
Patent Document 4: International Publication No. 2014/0648998
Patent Document 5: Japanese Patent Application Laid-Open No. 2018-14042
Patent Document 6: International Publication No. 2007/032427
Outline of the invention
Problems to be solved by the invention
[0007]
　The inventor has found the following problems in a technique of photographing a vehicle from the front or diagonally forward and analyzing the image to detect the number of passengers.
[0008]
　For example, there is a lane (hereinafter referred to as "reversible lane") in which the traveling direction of the vehicle can be switched for each time zone. If the camera is installed so as to photograph the vehicle traveling in the first traveling direction from the front or diagonally forward, the vehicle traveling in the opposite second traveling direction cannot be photographed from the front or diagonally forward. As a result, there will be times when the number of passengers cannot be detected by image analysis.
[0009]
　An object of the present invention is to provide a system for photographing a vehicle traveling in a reversible lane having the above-mentioned problems from the front or an oblique front.
Means to solve problems
[0010]
　According to the present invention, 　the lens of the photographing means is based
　on the photographing means for photographing the reversible lane in which the traveling direction of the vehicle is switched and the
time, the user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane.
A detection system comprising a switching means for switching the optical axis direction is provided.
[0011]
　Further, according to the present invention, the 　number of passengers who detect the number of passengers of the vehicle based on
　a photographing means for photographing a reversible lane in which the traveling direction of the vehicle can be switched with a wide-angle lens and
a part of a wide-range image generated by the photographing means. detection means,
has,
　the number of passengers detecting means, based on the traveling direction of the time or vehicle running the reversible lane when the wide image is generated, the wide image used for detection of the number of passengers A detection system that determines a portion is provided.
[0012]
　Further, according to the present invention,
　the lens of the photographing means for photographing the reversible lane based on the detection result of the traveling direction of the vehicle traveling in the reversible lane where the computer can switch the time, user input, or the traveling direction of the vehicle. A detection method for switching the optical axis direction is provided.
[0013]
　Further, according to the present invention,
　the lens of the photographing means for photographing the reversible lane based on the detection result of the traveling direction of the vehicle traveling in the reversible lane where the time, the user input, or the traveling direction of the vehicle can be switched by the computer. A program that functions as a switching means for switching the optical axis direction is provided.
[0014]
　Further, according to the present invention, a
　computer
　detects the number of passengers in the vehicle based on a part of a wide-range image generated by a photographing means for photographing a reversible lane in which the traveling direction of the vehicle is switched with a wide-angle lens, and the wide-angle
　image. Provided is a detection method for determining a part of the wide-angle image used for detecting the number of passengers based on the time when the is generated or the traveling direction of the vehicle traveling in the reversible lane.
[0015]
　Further, according to the present invention, the 　number of passengers detecting means for detecting the number of passengers in the vehicle based on a part of a wide-range image generated by the photographing means for photographing the reversible lane in which the traveling direction
　of the
vehicle can be switched with a wide-angle lens. The
　passenger number detecting means determines a part of the wide-angle image used for detecting the number of passengers based on the time when the wide-angle image is generated or the traveling direction of the vehicle traveling in the reversible lane. The program is provided.
Effect of the invention
[0016]
　According to the present invention, it is possible to photograph a vehicle traveling in a reversible lane from the front or diagonally forward.
A brief description of the drawing
[0017]
　The above-mentioned objectives and other objectives, features and advantages will be further clarified by the preferred embodiments described below and the accompanying drawings below.
[0018]
[Fig. 1] Fig. 1 is a diagram showing an example of a hardware configuration of the detection system of the present embodiment.
[Fig. 2] Fig. 2 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 3 is a flowchart showing an example of a processing flow of the detection system of the present embodiment.
FIG. 4 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 5 is an example of a functional block diagram of the detection system of the present embodiment.
[Fig. 6] Fig. 6 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 7 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 8 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 9 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 10 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 11 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
[Fig. 12] Fig. 12 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
[Fig. 13] Fig. 13 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 14 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 15 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 16 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 17 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 18 is a diagram for explaining an example of a part of a wide range image used by the detection system of the present embodiment for the number of passengers.
FIG. 19 is a diagram for explaining an example of a part of a wide range image used by the detection system of the present embodiment for the number of passengers.
FIG. 20 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 21 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 22 is an example of a functional block diagram of the detection system of the present embodiment.
FIG. 23 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 24 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 25 is a diagram for explaining an example of the configuration of the detection system of the present embodiment.
FIG. 26 is a diagram showing a relationship between a sensing area and a shooting range (shootable range) of the present embodiment.
Mode for carrying out the invention
[0019]
<
　First Embodiment> First, an outline of the detection system of the present embodiment will be described. The detection system of the present embodiment is a photographing means for photographing the reversible lane and a switching means for switching the lens optical axis direction of the photographing means based on the time, user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane. And have. According to such a detection system, the lens optical axis direction of the photographing means can be switched according to the change in the traveling direction of the vehicle traveling in the reversible lane. As a result, the vehicle can be photographed from the front or diagonally forward, regardless of the direction of travel of the vehicle traveling in the reversible lane.
[0020]
　Next, the details of the detection system will be described. First, an example of the hardware configuration of the detection system will be described. At least a part of the functional unit included in the detection system of the present embodiment is a CPU (Central Processing Unit) of an arbitrary computer, a memory, a program loaded into the memory, and a storage unit (a device in advance) such as a hard disk for storing the program. In addition to programs stored from the stage of shipment, programs downloaded from storage media such as CDs (Compact Discs) and servers on the Internet can also be stored), hardware and software centered on network connection interfaces. It is realized by any combination of. And, it is understood by those skilled in the art that there are various modifications of the realization method and the device.
[0021]
　FIG. 1 is a block diagram illustrating a hardware configuration of the detection system of the present embodiment. As shown in FIG. 1, the detection system includes a processor 1A, a memory 2A, an input / output interface 3A, a peripheral circuit 4A, and a bus 5A. The peripheral circuit 4A includes various modules. The detection system does not have to have the peripheral circuit 4A. The detection system may be composed of a plurality of physically separated devices. In this case, each of the plurality of devices may have the above hardware configuration.
[0022]
　The bus 5A is a data transmission path for the processor 1A, the memory 2A, the peripheral circuits 4A, and the input / output interface 3A to transmit and receive data to and from each other. The processor 1A is, for example, an arithmetic processing unit such as a CPU or a GPU (Graphics Processing Unit). The memory 2A is, for example, a memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory). The input / output interface 3A includes an interface for acquiring information from an input device, an external device, an external server, an external sensor, a camera, etc., an interface for outputting information to an output device, an external device, an external server, etc. .. The input device is, for example, a keyboard, a mouse, a microphone, or the like. The output device is, for example, a display, a speaker, a printer, a mailer, or the like. The processor 1A can issue commands to each module and perform calculations based on the calculation results thereof.
[0023]
　FIG. 2 shows an example of a functional block diagram of the detection system 10. As shown in the figure, the detection system 10 includes a photographing unit 11 and a switching unit 12.
[0024]
　The photographing unit 11 is a camera that generates a moving image or a still image, and photographs a reversible lane. The photographing unit 11 is installed so as to be able to photograph a vehicle traveling in the reversible lane. The photographing unit 11 may be installed on the side of the road or above the road. Examples of installation above the road include, but are not limited to, an example in which the photographing unit 11 is attached to an installation object such as an elevated railroad or a signboard located above the road.
[0025]
　The reversible lane is a lane through which the vehicle passes, and the traveling direction of the vehicle can be switched at an arbitrary timing. Generally, a signboard indicating the direction of travel of the reversible lane at that time is installed on the road, and the display content of this signboard is switched according to the switching of the direction of travel of the reversible lane.
[0026]
　For example, a time schedule may be set in advance such as "first time zone: first traveling direction, second time zone: second traveling direction, third time zone: closed road". In this case, the display content of the signboard is switched according to the time schedule. In addition, the manager of the reversible lane may decide to switch the traffic direction of the vehicle at any time. In this case, the display content of the signboard is switched based on the input of the operator.
[0027]
　The switching unit 12 switches the lens optical axis direction of the photographing unit 11 based on the time, user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane. Switching the lens optical axis direction of the shooting unit 11 is synonymous with switching the shooting range of the shooting unit 11 (camera) and switching the shooting direction of the shooting unit 11 (camera).
[0028]
　In the present embodiment, the means for switching the lens optical axis direction of the photographing unit 11 is not particularly limited, and any means can be adopted. In the following embodiment, a specific example of the means for switching the lens optical axis direction of the photographing unit 11 will be described. Regardless of whether the lens optical axis direction of the photographing unit 11 is switched based on the time, the user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane, the switching unit 12 is the vehicle traveling in the reversible lane. The lens optical axis direction of the photographing unit 11 is switched so as to photograph from the front or diagonally forward.
[0029]
　Here, an example of processing for switching the lens optical axis direction of the photographing unit 11 based on the time will be described. In the case of this example, as described above, the time schedule in the traveling direction of the reversible lane is predetermined. Then, based on the time schedule, a schedule for switching the lens optical axis direction of the photographing unit 11 is determined.
[0030]
　For example, in the first time zone in which the traveling direction of the vehicle traveling in the reversible lane is the first traveling direction, the photographing unit 11 shoots the vehicle traveling in the first traveling direction from the front or diagonally forward. The direction of the optical axis of the lens is determined. Then, in the second time zone in which the traveling direction of the vehicle traveling in the reversible lane is the second traveling direction (the direction opposite to the first traveling direction), the vehicle traveling in the second traveling direction is moved from the front or diagonally forward. The lens optical axis direction of the photographing unit 11 is determined so as to take a picture. The switching unit 12 monitors the start or end of the first time zone and the second time zone, and when it detects the start or end of the first time zone and the second time zone, it takes a picture accordingly. The lens optical axis direction of the unit 11 is switched to a predetermined predetermined direction.
[0031]
　Next, a processing example of switching the lens optical axis direction of the photographing unit 11 based on the user input will be described. In the case of this example, when the switching unit 12 receives the user input for switching the lens optical axis direction of the photographing unit 11, the switching unit 12 switches the lens optical axis direction of the photographing unit 11 according to the user input. User input may be performed via an input device included in the detection system 10, may be performed via an input device connected to the detection system 10 by wire and / or wirelessly, or may be performed with the detection system 10. It may be done via a remote device configured to be communicable. For example, a plurality of lens optical axis directions of the photographing unit 11 are determined in advance, and the user may input to select one from the plurality of lens optical axis directions. Then, the switching unit 12 may be switched so as to be in the lens optical axis direction selected by the user input.
[0032]
　Next, a processing example of switching the lens optical axis direction of the photographing unit 11 based on the detection result of the traveling direction of the vehicle traveling in the reversible lane will be described. In the case of this example, the switching unit 12 analyzes the image generated by the photographing unit 11 or the sensing result by the sensor that detects the existence of the object and the distance to the object, etc., so that the switching unit 12 of the vehicle traveling in the reversible lane Detect the direction of travel in real time. Then, when the switching unit 12 detects that the traveling direction of the vehicle has changed, the switching unit 12 switches to a predetermined lens optical axis direction of the photographing unit 11 corresponding to the changed traveling direction.
[0033]
　Next, an example of the processing flow of the detection system 10 of the present embodiment will be described with reference to the flowchart of FIG.
[0034]
　The switching unit 12 monitors the arrival of the timing for switching the lens optical axis direction of the photographing unit 11 (S10). The switching timing is "timing at a predetermined time", "timing when there is a user input to switch", "timing when it is detected that the traveling direction of the vehicle traveling in the reversible lane has changed", or the like.
[0035]
　When it is detected that it is time to switch the lens optical axis direction of the photographing unit 11 (Yes in S10), the switching unit 12 switches the lens optical axis direction of the photographing unit 11 (S11). Then, if there is no input to end the process (No in S12), the same process is repeated.
[0036]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. The detection system 10 of the present embodiment can switch the lens optical axis direction of the photographing unit 11 for photographing the reversible lane based on the time, the user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane. According to such a detection system 10, the lens optical axis direction of the photographing unit 11 can be switched according to the change in the traveling direction of the vehicle traveling in the reversible lane. As a result, the vehicle can be photographed from the front or diagonally forward, regardless of the direction of travel of the vehicle traveling in the reversible lane.
[0037]

　The detection system 10 of the present embodiment is different from the first embodiment in that the means for switching the lens optical axis direction of the photographing unit 11 is embodied. Other configurations of the detection system 10 of the present embodiment are the same as those of the first embodiment. Hereinafter, a detailed description will be given.
[0038]
　The hardware configuration of the detection system 10 is the same as that of the first embodiment.
[0039]
　An example of the functional block diagram of the detection system 10 is shown in FIG. 2, as in the first embodiment. As shown in the figure, the detection system 10 includes a photographing unit 11 and a switching unit 12.
[0040]
　As shown in FIG. 4, the detection system 10 has a plurality of photographing units 11-1 and 11-2 for photographing the reversible lane RL. The plurality of photographing units 11-1 and 11-2 are installed in a state in which the lens optical axis directions are different from each other. The shooting area of ​​the shooting unit 11-1 is A1, and the shooting area of ​​the shooting unit 11-2 is A2. The objects existing in each shooting area are included in the images generated by the shooting units 11-1 and 11-2. The photographing unit 11-1 is installed at a position and a direction in which a vehicle traveling in the first traveling direction is photographed from the front or diagonally forward. The photographing unit 11-2 is installed at a position and a direction in which a vehicle traveling in the second traveling direction is photographed from the front or diagonally forward.
[0041]
　The switching unit 12 switches the lens optical axis direction of the photographing unit 11 (including the photographing units 11-1 and 11-2) by switching the photographing units 11-1 and 11-2 for executing the photographing.
[0042]
　For example, the switching unit 12 causes the photographing unit 11-1 to perform shooting and does not cause the photographing unit 11-2 to perform shooting during the time zone in which the traveling direction is the first traveling direction. Then, the switching unit 12 causes the photographing unit 11-2 to perform shooting and does not cause the shooting unit 11-1 to perform shooting in the time zone in which the traveling direction is the second traveling direction.
[0043]
　As another example, the switching unit 12 causes the photographing unit 11-1 to perform shooting while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction, and causes the shooting unit 11-2 to perform shooting. Do not allow shooting. Then, the switching unit 12 causes the photographing unit 11-2 to perform shooting and the shooting unit 11-1 to perform shooting while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. I won't let you.
[0044]
　As another example, the switching unit 12 can cause the photographing unit 11-1 to perform shooting or the shooting unit 11-2 to perform shooting based on the user input. The user inputs so that the photographing unit 11-1 executes the shooting and the photographing unit 11-2 does not execute the shooting while the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Then, the user inputs so that the photographing unit 11-2 executes the shooting and the photographing unit 11-1 does not execute the shooting while the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. ..
[0045]
　Other configurations of the photographing unit 11 and the switching unit 12 are the same as those in the first embodiment.
[0046]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first embodiment can be realized. Further, a plurality of photographing units 11 are installed so as to shoot reversible lanes in a state where the lens optical axis directions are different from each other, and the lens optical axis direction of the photographing unit 11 is switched by switching the photographing unit 11 for executing shooting. According to the form detection system 10, it is possible to switch the lens optical axis direction of the photographing unit 11 with a simple configuration. Further, since it is not necessary to keep the plurality of photographing units 11 in operation at all times, energy saving is realized.
[0047]

　The detection system 10 of the present embodiment is different from the first embodiment in that the means for switching the lens optical axis direction of the photographing unit 11 is embodied. Then, the concrete means thereof is different from that of the second embodiment. Other configurations of the detection system 10 of the present embodiment are the same as those of the first embodiment. Hereinafter, a detailed description will be given.
[0048]
　The hardware configuration of the detection system 10 is the same as that of the first and second embodiments.
[0049]
　An example of the functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a direction switching mechanism 15.
[0050]
　As shown in FIG. 6, the photographing unit 11 is attached to the direction switching mechanism 15. The direction switching mechanism 15 includes a mechanism that automatically changes the direction of the attached photographing unit 11. For example, the direction of the attached photographing unit 11 is automatically changed by using a motor or the like as a power source. Examples of the mechanism for changing the orientation include, but are not limited to, a rotary table and the like. The shooting area when the shooting unit 11 is facing the first direction is A1. At this time, the photographing unit 11 can photograph the vehicle traveling in the first traveling direction from the front or diagonally forward. The shooting area when the shooting unit 11 is facing the second direction is A2. At this time, the photographing unit 11 can photograph the vehicle traveling in the second traveling direction from the front or diagonally forward.
[0051]
　The switching unit 12 switches the lens optical axis direction of the photographing unit 11 by controlling the direction switching mechanism 15.
[0052]
　For example, the switching unit 12 controls the direction switching mechanism 15 so that the photographing unit 11 faces the first direction and the photographing area becomes A1 in the time zone in which the traveling direction is the first traveling direction. Then, the switching unit 12 controls the direction switching mechanism 15 so that the photographing unit 11 faces the second direction and the photographing area becomes A2 in the time zone in which the traveling direction is the second traveling direction.
[0053]
　As another example, in the switching unit 12, while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction, the photographing unit 11 faces the first direction and the photographing area is A1. The direction switching mechanism 15 is controlled so as to be. Then, while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction, the switching unit 12 causes the photographing unit 11 to face the second direction and the photographing area to be A2. Controls the direction switching mechanism 15.
[0054]
　As another example, the switching unit 12 can control the direction switching mechanism 15 based on the user input, and the shooting area of ​​the shooting unit 11 can be set to A1 or A2. The user inputs so that the photographing unit 11 faces the first direction and the photographing area becomes A1 while the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Then, while the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction, the user inputs so that the photographing unit 11 faces the second direction and the photographing area is A2.
[0055]
　Other configurations of the photographing unit 11 and the switching unit 12 are the same as those in the first embodiment.
[0056]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first embodiment can be realized. Further, according to the detection system 10 of the present embodiment, the number of photographing units 11 can be reduced, so that the cost burden is reduced.
[0057]

　The detection system 10 of the present embodiment is different from the first embodiment in that the means for switching the lens optical axis direction of the photographing unit 11 is embodied. The embodying means is different from the second and third embodiments. Other configurations of the detection system 10 of the present embodiment are the same as those of the first embodiment. Hereinafter, a detailed description will be given.
[0058]
　The hardware configuration of the detection system 10 is the same as that of the first to third embodiments.
[0059]
　An example of the functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11 and a switching unit 12.
[0060]
　The photographing unit 11 includes an optical axis variable lens capable of changing the optical axis direction of the lens. The optical axis variable lens is, for example, a tilt shift lens. As shown in FIG. 7, the photographing unit 11 is installed facing a predetermined direction, and the optical axis direction of the lens can be switched by controlling the optical axis variable lens. The photographing area when the optical axis of the lens is oriented in the first direction is A1. At this time, the photographing unit 11 can photograph the vehicle traveling in the first traveling direction from the front or diagonally forward. The photographing area when the optical axis of the lens is oriented in the second direction is A2. At this time, the photographing unit 11 can photograph the vehicle traveling in the second traveling direction from the front or diagonally forward.
[0061]
　The switching unit 12 switches the lens optical axis direction of the photographing unit 11 by controlling the optical axis variable lens.
[0062]
　For example, the switching unit 12 controls the optical axis variable lens so that the lens optical axis faces the first direction and the photographing area becomes A1 in the time zone in which the traveling direction is the first traveling direction. Then, the switching unit 12 controls the optical axis variable lens so that the lens optical axis faces the second direction and the photographing area becomes A2 in the time zone in which the traveling direction is the second traveling direction.
[0063]
　As another example, in the switching unit 12, the lens optical axis faces the first direction and the shooting area is A1 while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. The optical axis variable lens is controlled so as to be. Then, the switching unit 12 so that the lens optical axis faces the second direction and the shooting area becomes A2 while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. Controls the optical axis variable lens.
[0064]
　As another example, the switching unit 12 can control the optical axis variable lens based on the user input, and the photographing area of ​​the photographing unit 11 can be set to A1 or A2. The user inputs so that the lens optical axis faces the first direction and the shooting area becomes A1 while the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Then, the user inputs so that the lens optical axis faces the second direction and the shooting area becomes A2 while the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction.
[0065]
　Other configurations of the photographing unit 11 and the switching unit 12 are the same as those in the first embodiment.
[0066]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first embodiment can be realized. Further, according to the detection system 10 of the present embodiment, the number of photographing units 11 can be reduced, so that the cost burden is reduced.
[0067]

　The detection system 10 of the present embodiment is different from the first to fourth embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. Other configurations of the detection system 10 of the present embodiment are the same as those of the first to fourth embodiments. Hereinafter, a detailed description will be given.
[0068]
　The hardware configuration of the detection system 10 is the same as that of the first to fourth embodiments.
[0069]
　An example of the functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a sensor 14.
[0070]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 that realizes such a function may be, for example, a sensor that irradiates light and detects a reflected wave, or may have another configuration.
[0071]
　In this embodiment, as shown in FIG. 9, two sensors 14-1 and 14-2 are installed to detect a vehicle traveling in each of the reversible lanes RL at positions separated from each other.
[0072]
　The sensor 14-1 is configured to detect a vehicle moving in the first traveling direction before entering the shooting area A1 of the shooting unit 11-1. For example, the sensor 14-1 irradiates light in the direction of C1 and receives the reflected light. Then, the sensor 14-1 inputs the sensing result to the photographing unit 11-1.
[0073]
　The sensor 14-2 is configured to detect a vehicle moving in the second traveling direction before entering the shooting area A2 of the shooting unit 11-2. For example, the sensor 14-2 irradiates light in the direction of C2 and receives the reflected light. Then, the sensor 14-2 inputs the sensing result to the photographing unit 11-2.
[0074]
　The photographing units 11-1 and 11-2 perform processing based on the sensing results of the sensors 14-1 and 14-2, respectively. For example, the photographing units 11-1 and 11-2 may determine the photographing timing based on the vehicle detection timing (detection timing) obtained by the sensors 14-1 and 14-2, respectively. For example, the photographing units 11-1 and 11-2 may start shooting X1 seconds after the vehicle detection timing and end shooting X2 seconds later. In this way, the photographing units 11-1 and 11-2 operate so as to take a picture at the timing when the vehicle is in the shooting areas A1 and A2 and not to take a picture when the vehicle is not in the shooting areas A1 and A2. can do.
[0075]
　In addition, the photographing units 11-1 and 11-2 save from the generated image group (frame group of moving image) based on the detection timing of the vehicle obtained by each of the sensors 14-1 and 14-2. The image may be determined. For example, the photographing units 11-1 and 11-2 may save the (photographed) images generated from the time when X1 seconds have passed from the time when X1 seconds have passed from the detection timing of the vehicle to the time when X2 seconds have passed. Then, the photographing units 11-1 and 11-2 do not have to save the images generated at other timings. In this way, the photographing units 11-1 and 11-2 save the images generated at the timing when the vehicle is in the photographing areas A1 and A2, and are generated at the timing when the vehicle is not in the photographing areas A1 and A2. It can work so that the image is not saved.
[0076]
　In addition, the photographing units 11-1 and 11-2 may register the detection timing of the vehicle obtained by the sensors 14-1 and 14-2. By doing so, at an arbitrary timing, the timing at which the vehicle is in the shooting areas A1 and A2 from the image group generated by the shooting units 11-1 and 11-2 based on the data indicating the detection timing of the vehicle. Only the images generated in can be extracted.
[0077]
　The switching unit 12 switches the sensors 14-1 and 14-2 for executing sensing based on the time, the user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane.
[0078]
　For example, the switching unit 12 causes the sensor 14-1 to perform sensing and the sensor 14-2 to perform sensing in the first time zone in which the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. I won't let you. Then, the switching unit 12 causes the sensor 14-2 to perform sensing and the sensor 14-1 to perform sensing in the second time zone in which the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. I won't let you. The switching unit 12 monitors the start or end of the first time zone and the second time zone, and when it detects the start or end of the first time zone and the second time zone, it senses accordingly. Switches between sensors 14-1 and 14-2 to execute.
[0079]
　As another example, the switching unit 12 causes the sensor 14-1 to perform sensing and the sensor 14-2 to perform sensing while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Do not execute. Then, the switching unit 12 causes the sensor 14-2 to execute sensing and does not cause the sensor 14-1 to execute sensing while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. .. When the switching unit 12 detects that the traveling direction of the vehicle has changed, the switching unit 12 switches the sensors 14-1 and 14-2 for executing sensing accordingly.
[0080]
　As another example, the switching unit 12 can use the sensor 14-1 or the sensor 14-2 as the sensor for executing sensing based on the user input. The user inputs the sensor 14-1 to perform sensing while the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Then, the user inputs the sensor 14-2 to execute sensing while the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction.
[0081]
　The switching unit 12 may switch the optical axis direction of the photographing unit 11 and switch the sensor for executing sensing to the sensor 14-1 according to the user input for setting the photographing area of ​​the photographing unit 11 to A1. Then, the switching unit 12 may switch the optical axis direction of the photographing unit 11 and switch the sensor for executing sensing to the sensor 14-2 in response to the user input to set the photographing area of ​​the photographing unit 11 to A2. That is, the switching unit 12 may switch the sensor that executes sensing according to the input for switching the optical axis direction of the photographing unit 11.
[0082]
　Further, the configuration of the photographing unit 11 may be the configuration shown in FIG. 6 or 7 instead of the configuration shown in FIG. In this case, the sensing results of the sensors 14-1 and 14-2 are both input to one photographing unit 11. Then, the photographing unit 11 can perform the same processing as the above-mentioned photographing units 11-1 and 11-2 based on the sensing results of the sensors 14-1 and 14-2.
[0083]
　Other configurations of the photographing unit 11 and the switching unit 12 are the same as those of the first to fourth embodiments.
[0084]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first to fourth embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding shooting at an unnecessary timing and avoiding saving of an unnecessary image.
[0085]
　Further, according to the detection system 10 of the present embodiment in which a plurality of sensors 14 are installed and the sensors 14 for executing sensing are switched, the vehicle advances in the first traveling direction and the vehicle advances in the second traveling direction with a simple configuration. Both vehicles can be detected at a desired timing (before entering the shooting areas A1 and A2). Further, since it is not necessary to keep the plurality of sensors 14 in operation at all times, energy saving is realized.
[0086]

　The detection system 10 of the present embodiment is different from the first to fourth embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. The configuration of the sensor is different from that of the fifth embodiment. Other configurations of the detection system 10 of the present embodiment are the same as those of the first to fourth embodiments. Hereinafter, a detailed description will be given.
[0087]
　The hardware configuration of the detection system 10 is the same as that of the first to fifth embodiments.
[0088]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a sensor 14. The configuration of the switching unit 12 is the same as that of the first to fourth embodiments.
[0089]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 irradiates light and receives the reflected light to detect a vehicle traveling in the reversible lane RL. Then, as shown in FIG. 11, the sensor 14 slides the light irradiation direction in the traveling direction of the vehicle. The sensor 14 makes a wide area a sensing area by alternately repeating the slide in the first traveling direction of the vehicle and the slide in the opposite direction. The means for sliding the light irradiation direction as described above is not particularly limited.
[0090]
　The sensor 14 is configured to face the first direction and detect a vehicle moving in the first traveling direction before entering the shooting area A1 of the shooting unit 11-1 when the light irradiation direction is C1. Will be done. Further, when the sensor 14 faces the second direction and the light irradiation direction is C2, the sensor 14 detects the vehicle moving in the second traveling direction before entering the shooting area A2 of the shooting unit 11-2. It is composed of. The sensor 14 inputs the sensing result to the photographing units 11-1 and 11-2.
[0091]
　The photographing units 11-1 and 11-2 can perform processing based on the sensing result of the sensor 14. The details are the same as those described in the fifth embodiment.
[0092]
　The configuration of the photographing unit 11 may be the configuration shown in FIG. 6 or 7 instead of the configuration shown in FIG. In this case, the sensing results of the sensors 14-1 and 14-2 are both input to one photographing unit 11. Then, the photographing unit 11 can perform the same processing as the above-mentioned photographing units 11-1 and 11-2 based on the sensing results of the sensors 14-1 and 14-2.
[0093]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first to fourth embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding shooting at an unnecessary timing and avoiding saving of an unnecessary image. Further, according to the detection system 10 of the present embodiment, the number of sensors 14 can be reduced, so that the cost burden is reduced.
[0094]
<7th Embodiment>
　The detection system 10 of the present embodiment is different from the first to fourth embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. The configuration of the sensor is different from that of the fifth and sixth embodiments. Other configurations of the detection system 10 of the present embodiment are the same as those of the first to fourth embodiments. Hereinafter, a detailed description will be given.
[0095]
　The hardware configuration of the detection system 10 is the same as that of the first to sixth embodiments.
[0096]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a sensor 14. The configuration of the switching unit 12 is the same as that of the first to fourth embodiments.
[0097]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 detects a vehicle traveling in the reversible lane RL by, for example, irradiating light and receiving reflected light. In FIG. 12, the light irradiation direction of the sensor 14 is indicated by C. As shown in the figure, the sensor 14 is configured to detect a vehicle moving in the first traveling direction after entering the shooting area A1 of the shooting unit 11-1. Further, the sensor 14 is configured to detect a vehicle moving in the second traveling direction after entering the shooting area A2 of the shooting unit 11-2. The sensor 14 inputs the sensing result to the photographing units 11-1 and 11-2.
[0098]
　The photographing units 11-1 and 11-2 perform processing based on the sensing result of the sensor 14. Specifically, the photographing units 11-1 and 11-2 determine an image to be saved from the generated image group based on the detection timing of the vehicle obtained by the sensor 14. For example, the photographing units 11-1 and 11-2 may save the images generated from the time point X3 seconds before the vehicle detection timing to the time point X4 seconds before or after the detection timing of the vehicle. Then, the photographing units 11-1 and 11-2 do not have to save the images generated at other timings. In this way, the photographing units 11-1 and 11-2 save the images generated at the timing when the vehicle is in the photographing areas A1 and A2, and are generated at the timing when the vehicle is not in the photographing areas A1 and A2. It can work so that the image is not saved. The values ​​of X3 and X4 may differ depending on the traveling direction of the vehicle traveling in the reversible lane RL.
[0099]
　The configuration of the photographing unit 11 may be the configuration shown in FIG. 6 or 7 instead of the configuration shown in FIG. In this case, the sensing result of the sensor 14 is input to one photographing unit 11. Then, the photographing unit 11 can perform the same processing as the above-mentioned photographing units 11-1 and 11-2 based on the sensing result of the sensor 14.
[0100]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first to fourth embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding the storage of unnecessary images. Further, according to the detection system 10 of the present embodiment, the number of sensors 14 can be reduced, so that the cost burden is reduced.
[0101]

　The detection system 10 of the present embodiment is different from the first to fourth embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. The configuration of the sensor is different from that of the fifth to seventh embodiments. Other configurations of the detection system 10 of the present embodiment are the same as those of the first to fourth embodiments. Hereinafter, a detailed description will be given.
[0102]
　The hardware configuration of the detection system 10 is the same as that of the first to seventh embodiments.
[0103]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a sensor 14. The configuration of the switching unit 12 is the same as that of the first to fourth embodiments.
[0104]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 detects a vehicle traveling in the reversible lane RL by, for example, irradiating light and receiving reflected light. In FIG. 13, the light irradiation direction of the sensor 14 is indicated by C. As shown in the figure, the sensor 14 is configured to detect a vehicle moving in the first traveling direction before entering the shooting area A1 of the shooting unit 11-1. Further, the sensor 14 is configured to detect a vehicle moving in the second traveling direction after entering the shooting area A2 of the shooting unit 11-2. The sensor 14 inputs the sensing result to the photographing units 11-1 and 11-2.
[0105]
　The photographing units 11-1 and 11-2 perform processing based on the sensing result of the sensor 14. The photographing unit 11-1 may determine the photographing timing based on the vehicle detection timing obtained by the sensor 14. For example, the photographing unit 11-1 may start shooting X1 seconds after the vehicle detection timing and end shooting X2 seconds later. In this way, the photographing unit 11-1 can operate so as to take a picture at the timing when the vehicle is in the shooting area A1 and not to take a picture when the vehicle is not in the shooting area A1.
[0106]
　In addition, the photographing unit 11-1 may determine an image to be saved from the generated image group based on the detection timing of the vehicle obtained by the sensor 14. For example, the photographing unit 11-1 may save the image generated from the time when X1 seconds have passed from the time when X1 seconds have passed from the detection timing of the vehicle to the time when X2 seconds have passed. Then, the photographing unit 11-1 does not have to save the image generated at other timings. In this way, the photographing unit 11-1 operates so as to save the image generated when the vehicle is in the shooting area A1 and not to save the image generated when the vehicle is not in the shooting area A1. be able to.
[0107]
　Further, the photographing unit 11-2 may determine an image to be saved from the generated image group based on the detection timing of the vehicle obtained by the sensor 14. For example, the photographing unit 11-2 may save the image generated from the time point X3 seconds before the vehicle detection timing to the time point X4 seconds before or after the detection timing of the vehicle. Then, the photographing unit 11-2 does not have to save the image generated at other timings. In this way, the shooting unit 11-2 operates so as to save the image generated when the vehicle is in the shooting area A2 and not to save the image generated when the vehicle is not in the shooting area A2. be able to.
[0108]
　The configuration of the photographing unit 11 may be the configuration shown in FIG. 6 or 7 instead of the configuration shown in FIG. In this case, the sensing result of the sensor 14 is input to one photographing unit 11. Then, the photographing unit 11 can perform the same processing as the above-mentioned photographing units 11-1 and 11-2 based on the sensing result of the sensor 14. The photographing unit 11 can switch the processing content to be performed based on the vehicle detection timing obtained by the sensor 14 as described above, depending on whether the photographing area is A1 or A1.
[0109]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first to fourth embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding shooting at an unnecessary timing and avoiding saving of an unnecessary image. Further, according to the detection system 10 of the present embodiment, the number of sensors 14 can be reduced, so that the cost burden is reduced.
[0110]

　The detection system 10 of the present embodiment is different from the first to eighth embodiments in that it has means for detecting the number of passengers in the vehicle based on the image generated by the photographing unit 11. Other configurations of the detection system 10 of the present embodiment are the same as those of the first to eighth embodiments. Hereinafter, a detailed description will be given.
[0111]
　The hardware configuration of the detection system 10 is the same as that of the first to eighth embodiments.
[0112]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a number of passengers detecting unit 13. Although not shown, the detection system 10 may further include a sensor 14. The configuration of the photographing unit 11, the switching unit 12, and the sensor 14 is the same as that of the first to eighth embodiments.
[0113]
　The number of passengers detection unit 13 detects the number of passengers in the vehicle based on the image generated by the photographing unit 11. The number of passengers detection unit 13 can detect the number of passengers in the vehicle by using any technique. For example, the number of passengers detection unit 13 may analyze the image to detect the number of faces existing in the vehicle and calculate the number of the faces as the number of passengers. In addition, the number of passengers detection unit 13 may machine-learn a large number of images and generate an estimation model for estimating the number of passengers from the images. Then, the number of passengers detection unit 13 may detect the number of passengers by inputting the image generated by the photographing unit 11 into the estimation model. Further, the number of passengers detection unit 13 may detect the number of passengers by analyzing one image, analyze a plurality of continuous images showing the same vehicle, and statistically process the analysis result of each image. Then, the number of passengers may be detected. Further, the number of passengers detection unit 13 may detect the number of passengers by using the technique disclosed in Patent Documents 1 to 4.
[0114]
　The number of passengers detection unit 13 may detect the number of passengers in the vehicle based only on the image extracted based on the detection timing of the vehicle obtained by the sensor 14 in the image generated by the photographing unit 11. The "image extracted based on the vehicle detection timing" may be the same image as the "image to be saved determined based on the vehicle detection timing" described in the above embodiment.
[0115]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the first to eighth embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the number of passengers can be obtained by analyzing an image of the vehicle taken from the front or diagonally forward, in which the traveling direction of the vehicle traveling in the reversible lane may be any direction. Can be detected.
[0116]
<10th Embodiment>
　The hardware configuration of the detection system 10 of the present embodiment is the same as that of the 1st to 9th embodiments.
[0117]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 has a photographing unit 11. The photographing unit 11 photographs the reversible lane with a wide-angle lens. Other configurations of the photographing unit 11 are the same as those of the first to ninth embodiments.
[0118]
　When the reversible lane is photographed with a wide-angle lens, the photographing unit 11 can photograph the vehicle traveling in the reversible lane from the front or diagonally forward regardless of the traveling direction of the vehicle.
[0119]
　For example, as shown in FIG. 16, when the traveling direction of the reversible lane RL is the first traveling direction, the vehicle located in the left side B1 of the photographing area A of the photographing unit 11 is photographed from the front or diagonally forward. can do. Further, when the traveling direction of the reversible lane RL is the second traveling direction, the vehicle located on the right side B2 in the drawing of the photographing area A can be photographed from the front or diagonally forward.
[0120]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. The detection system 10 of the present embodiment captures a reversible lane with a wide-angle lens. According to such a detection system 10, the vehicle traveling in the reversible lane may travel in any direction, and the vehicle can be photographed from the front or diagonally forward.
[0121]

　The detection system 10 of the present embodiment is different from the tenth embodiment in that it detects the number of passengers of a vehicle based on a part of a wide-range image taken by a wide-angle lens. Hereinafter, a detailed description will be given.
[0122]
　The hardware configuration of the detection system 10 is the same as that of the first to tenth embodiments.
[0123]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11 and a number of passengers detecting unit 13. The configuration of the photographing unit 11 is the same as that of the tenth embodiment.
[0124]
　The number of passengers detection unit 13 detects the number of passengers in the vehicle based on a part of the wide range image generated by the photographing unit 11.
[0125]
　For example, as shown in FIG. 16, when the traveling direction of the reversible lane RL is the first traveling direction, the vehicle located in the left side B1 of the photographing area A of the photographing unit 11 is photographed from the front or diagonally forward. can do. However, the vehicle located on the right side B2 of the photographing area A will be photographed from the rear or diagonally rearward.
[0126]
　Similarly, when the traveling direction of the reversible lane RL is the second traveling direction, the vehicle located on the right side B2 of the photographing area A of the photographing unit 11 can be photographed from the front or diagonally forward. However, the vehicle located on the left side B1 of the photographing area A will be photographed from the rear or diagonally rearward.
[0127]
　Therefore, the number of passengers detection unit 13 does not detect the number of passengers by analyzing the entire area of ​​the wide range image, but only a part of the wide range image, specifically, a part where the vehicle taken from the front or diagonally forward exists. Cut out and detect the number of passengers based on a part of it. For example, the number of passengers detection unit 13 may bisect a wide range image into left and right (L1 and L2) as shown in FIG. 18 and cut out only one of them. In addition, as shown in FIG. 19, the number of passengers detecting unit 13 may cut out only one of a predetermined part L1 on the left side of the wide area image and a predetermined part L2 on the right side of the wide area image. .. The size of L1 and L2 is a design matter.
[0128]
　As shown in FIG. 16, when the traveling direction of the reversible lane RL is the first traveling direction, that is, the vehicle advances from the left side to the right side toward the lens optical axis direction of the photographing unit 11, the number of passengers detecting unit 13 is used. A part L1 on the left side of the wide area image is cut out. Then, when the traveling direction of the reversible lane RL is the second traveling direction, that is, the vehicle advances from the right side to the left side toward the lens optical axis direction of the photographing unit 11, the number of passengers detecting unit 13 is on the right side of the wide range image. Cut out a part of L1.
[0129]
　For example, a time schedule for the direction of travel of the reversible lane is determined in advance, such as "first time zone: first direction of travel, second time zone: second direction of travel, third time zone: closed road". If so, the number of passengers detection unit 13 can determine a part to be cut out from each wide range image based on the time (shooting time) when the wide range image is generated.
[0130]
　In addition, the operator may input to specify the traveling direction of the reversible lane at the time of generating each wide range image. Then, the number of passengers detection unit 13 may determine a part to be cut out from each wide range image based on the input.
[0131]
　In addition, the number of passengers detection unit 13 may specify the traveling direction (traveling direction of the vehicle) of the reversible lane at the time of generating each wide-range image by analyzing the wide-range image. For example, the number of passengers detection unit 13 may specify the traveling direction of the reversible lane by specifying whether the vehicle in the wide range image is facing left or right by using an image analysis technique such as pattern matching.
[0132]
　The number of passengers detection unit 13 detects the number of passengers in the vehicle based on a part cut out from a wide range image. The number of passengers detection unit 13 can detect the number of passengers in the vehicle by using any technique. For example, the number of passengers detection unit 13 may analyze a part of a wide range image to detect the number of faces existing in the vehicle, and use the number of faces as the number of passengers. In addition, the number of passengers detection unit 13 may machine-learn a large number of images and generate an estimation model for estimating the number of passengers from the images. Then, the number of passengers detection unit 13 may detect the number of passengers by inputting a part of the wide range image into the estimation model. Further, the number of passengers detection unit 13 may detect the number of passengers by analyzing one wide range image, analyze a plurality of wide range images showing the same vehicle, and statistically process the analysis result of each wide range image. By doing so, the number of passengers may be detected. Further, the number of passengers detection unit 13 may detect the number of passengers by using the technique disclosed in Patent Documents 1 to 4.
[0133]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same operation and effect as those of the tenth embodiment can be realized. Further, according to the detection system 10 of the present embodiment, the number of passengers can be obtained by analyzing an image of the vehicle taken from the front or diagonally forward, in which the traveling direction of the vehicle traveling in the reversible lane may be any direction. Can be detected.
[0134]
　Further, it is possible to cut out only a part of the wide-angle image taken by the wide-angle lens, specifically, the part where the vehicle is taken from the front or diagonally forward, and detect the number of passengers based on the part. Therefore, the processing load of the detection system 10 can be reduced, and the detection accuracy of the number of passengers is improved.
[0135]
<12th Embodiment>
　The detection system 10 of the present embodiment is different from the 10th and 11th embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. Other configurations of the detection system 10 of this embodiment are the same as those of the tenth and eleventh embodiments. Hereinafter, a detailed description will be given.
[0136]
　The hardware configuration of the detection system 10 is the same as that of the first to eleventh embodiments.
[0137]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11, a switching unit 12, and a sensor 14. Although not shown, the detection system 10 may include a passenger number detection unit 13. The configuration of the number of passengers detection unit 13 is the same as that of the ninth and eleventh embodiments.
[0138]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 that realizes such a function may be, for example, a sensor that irradiates light and detects a reflected wave, or may have another configuration.
[0139]
　In this embodiment, as shown in FIG. 21, two sensors 14-1 and 14-2 are installed to detect vehicles traveling in reversible lanes RL at positions separated from each other.
[0140]
　The sensor 14-1 is configured to detect a vehicle moving in the first traveling direction before entering the shooting area A of the shooting unit 11. For example, the sensor 14-1 irradiates light in the direction of C1 and receives the reflected light. Then, the sensor 14-1 inputs the sensing result to the photographing unit 11.
[0141]
　The sensor 14-2 is configured to detect a vehicle moving in the second traveling direction before entering the shooting area A of the shooting unit 11. For example, the sensor 14-2 irradiates light in the direction of C2 and receives the reflected light. Then, the sensor 14-2 inputs the sensing result to the photographing unit 11.
[0142]
　The photographing unit 11 can perform processing based on the sensing results of each of the sensors 14-1 and 14-2. For example, the photographing unit 11 may determine the photographing timing based on the vehicle detection timing obtained by each of the sensors 14-1 and 14-2. For example, the photographing unit 11 may start shooting X1 seconds after the vehicle detection timing and end shooting X2 seconds later. In this way, the photographing unit 11 can operate so as to take a picture at the timing when the vehicle is in the shooting area A and not to take a picture when the vehicle is not in the shooting area A.
[0143]
　In addition, the photographing unit 11 may determine an image to be saved from the generated image group based on the detection timing of the vehicle obtained by each of the sensors 14-1 and 14-2. For example, the photographing unit 11 may save the image generated from the time when X1 seconds have passed from the time when X1 seconds have passed from the detection timing of the vehicle to the time when X2 seconds have passed. Then, the photographing unit 11 does not have to save the image generated at other timings. In this way, the shooting unit 11 may operate so as to save the image generated when the vehicle is in the shooting area A and not to save the image generated when the vehicle is not in the shooting area A. it can.
[0144]
　In addition, the photographing unit 11 may register the detection timing of the vehicle obtained by the sensors 14-1 and 14-2. By doing so, it is possible to extract only the image generated at the timing when the vehicle is in the shooting area A from the plurality of images generated by the shooting unit 11 based on the data indicating the detection timing of the vehicle. ..
[0145]
　The other configurations of the photographing unit 11 are the same as those of the tenth and eleventh embodiments.
[0146]
　The switching unit 12 switches the sensors 14-1 and 14-2 for executing sensing based on the time, the user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane.
[0147]
　For example, the switching unit 12 causes the sensor 14-1 to perform sensing and the sensor 14-2 to perform sensing in the first time zone in which the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. I won't let you. Then, the switching unit 12 causes the sensor 14-2 to perform sensing and the sensor 14-1 to perform sensing in the second time zone in which the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. I won't let you. The switching unit 12 monitors the start or end of the first time zone and the second time zone, and when it detects the start or end of the first time zone and the second time zone, it senses accordingly. Switches between sensors 14-1 and 14-2 to execute.
[0148]
　As another example, the switching unit 12 causes the sensor 14-1 to perform sensing and the sensor 14-2 to perform sensing while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Do not execute. Then, the switching unit 12 causes the sensor 14-2 to execute sensing and does not cause the sensor 14-1 to execute sensing while the detection result of the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction. .. When the switching unit 12 detects that the traveling direction of the vehicle has changed, the switching unit 12 switches the sensors 14-1 and 14-2 for executing sensing accordingly.
[0149]
　As another example, the switching unit 12 can use the sensor 14-1 or the sensor 14-2 as the sensor for executing sensing based on the user input. The user inputs the sensor 14-1 to perform sensing while the traveling direction of the vehicle traveling in the reversible lane RL is the first traveling direction. Then, the user inputs the sensor 14-2 to execute sensing while the traveling direction of the vehicle traveling in the reversible lane RL is the second traveling direction.
[0150]
　The number of passengers detection unit 13 may detect the number of passengers in the vehicle based only on the image extracted based on the detection timing of the vehicle obtained by the sensor 14 in the image generated by the photographing unit 11. The "image extracted based on the vehicle detection timing" may be the same image as the above-mentioned "image to be saved determined based on the vehicle detection timing".
[0151]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the tenth and eleventh embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding shooting at an unnecessary timing and avoiding saving of an unnecessary image.
[0152]
　Further, according to the detection system 10 of the present embodiment in which a plurality of sensors 14 are installed and the sensors 14 for executing sensing are switched, the vehicle advances in the first traveling direction and the vehicle advances in the second traveling direction with a simple configuration. Both vehicles can be detected at a desired timing (before entering the photographing area A). Further, since it is not necessary to keep the plurality of sensors 14 in operation at all times, energy saving is realized.
[0153]
<13th Embodiment>
　The detection system 10 of this embodiment is different from the 10th and 11th embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. The configuration of the sensor is different from that of the twelfth embodiment. Other configurations of the detection system 10 of this embodiment are the same as those of the tenth and eleventh embodiments. Hereinafter, a detailed description will be given.
[0154]
　The hardware configuration of the detection system 10 is the same as that of the first to twelfth embodiments.
[0155]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11 and a sensor 14. Although not shown, the detection system 10 may include a passenger number detection unit 13. The configuration of the number of passengers detection unit 13 is the same as that of the ninth and eleventh embodiments.
[0156]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 irradiates light and receives the reflected light to detect a vehicle traveling in the reversible lane RL. Then, as shown in FIG. 23, the sensor 14 slides the light irradiation direction in the traveling direction of the vehicle. The sensor 14 makes a wide area a sensing area by alternately repeating the slide in the first traveling direction of the vehicle and the slide in the opposite direction. The means for sliding the light irradiation direction as described above is not particularly limited. As shown in FIG. 26, the sensing area (sensable range) of the sensor 14 is wider than the photographing range (photographable range) of the photographing unit 11. Further, as shown in FIG. 26, the sensing area (sensable range) of the sensor 14 can include the photographing range (photographable range) of the photographing unit 11. As shown in FIG. 26, the sensing area of ​​the sensor 14 and the photographing range of the photographing unit 11 can be defined by, for example, a section extending along the traveling direction of the road.
[0157]
　When the sensor 14 faces the first direction and the light irradiation direction is C1, the sensor 14 is configured to detect a vehicle moving in the first traveling direction before entering the shooting area A of the shooting unit 11. .. Further, the sensor 14 is configured to face the second direction, and when the light irradiation direction is C2, detect a vehicle moving in the second traveling direction before entering the shooting area A of the shooting unit 11. Will be done. The sensor 14 inputs the sensing result to the photographing unit 11.
[0158]
　The photographing unit 11 can perform processing based on the sensing result of the sensor 14. The details are the same as those described in the twelfth embodiment. The other configurations of the photographing unit 11 are the same as those of the tenth and eleventh embodiments.
[0159]
　The number of passengers detection unit 13 may detect the number of passengers in the vehicle based only on the image extracted based on the detection timing of the vehicle obtained by the sensor 14 in the image generated by the photographing unit 11. The "image extracted based on the vehicle detection timing" may be the same image as the above-mentioned "image to be saved determined based on the vehicle detection timing".
[0160]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the tenth and eleventh embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding shooting at an unnecessary timing and avoiding saving of an unnecessary image. Further, according to the detection system 10 of the present embodiment, the number of sensors 14 can be reduced, so that the cost burden is reduced.
[0161]
<14th Embodiment>
　The detection system 10 of the present embodiment is different from the 10th and 11th embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. The configuration of the sensor is different from that of the twelfth and thirteenth embodiments. Other configurations of the detection system 10 of this embodiment are the same as those of the tenth and eleventh embodiments. Hereinafter, a detailed description will be given.
[0162]
　The hardware configuration of the detection system 10 is the same as that of the first to thirteenth embodiments.
[0163]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11 and a sensor 14. Although not shown, the detection system 10 may include a passenger number detection unit 13. The configuration of the number of passengers detection unit 13 is the same as that of the ninth and eleventh embodiments.
[0164]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 irradiates light and receives the reflected light to detect a vehicle traveling in the reversible lane RL. In FIG. 24, the light irradiation direction of the sensor 14 is indicated by C. As shown in the figure, the sensor 14 is configured to detect a vehicle moving in the first traveling direction after entering the shooting area A of the shooting unit 11. Further, the sensor 14 is configured to detect a vehicle moving in the second traveling direction after entering the shooting area A of the shooting unit 11. The sensor 14 inputs the sensing result to the photographing unit 11.
[0165]
　The photographing unit 11 performs processing based on the sensing result of the sensor 14. Specifically, the photographing unit 11 determines an image to be saved from the generated image group based on the detection timing of the vehicle obtained by the sensor 14. For example, the photographing unit 11 may save the image generated from the time point X3 seconds before the detection timing of the vehicle to the time point X4 seconds before or after the detection timing of the vehicle. Then, the photographing unit 11 does not have to save the image generated at other timings. In this way, the shooting unit 11 may operate so as to save the image generated when the vehicle is in the shooting area A and not to save the image generated when the vehicle is not in the shooting area A. it can. The values ​​of X3 and X4 may differ depending on the traveling direction of the vehicle traveling in the reversible lane RL. The other configurations of the photographing unit 11 are the same as those of the tenth and eleventh embodiments.
[0166]
　The number of passengers detection unit 13 may detect the number of passengers in the vehicle based only on the image extracted based on the detection timing of the vehicle obtained by the sensor 14 in the image generated by the photographing unit 11. The "image extracted based on the vehicle detection timing" may be the same image as the above-mentioned "image to be saved determined based on the vehicle detection timing".
[0167]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the tenth and eleventh embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding the storage of unnecessary images. Further, according to the detection system 10 of the present embodiment, the number of sensors 14 can be reduced, so that the cost burden is reduced.
[0168]

　The detection system 10 of the present embodiment is different from the tenth and eleventh embodiments in that it has a sensor for detecting a vehicle traveling in a reversible lane. The configuration of the sensor is different from that of the twelfth to fourteenth embodiments. Other configurations of the detection system 10 of this embodiment are the same as those of the tenth and eleventh embodiments. Hereinafter, a detailed description will be given.
[0169]
　The hardware configuration of the detection system 10 is the same as that of the first to fourteenth embodiments.
[0170]
　An example of a functional block diagram of the detection system 10 is shown in FIG. As shown in the figure, the detection system 10 includes a photographing unit 11 and a sensor 14. Although not shown, the detection system 10 may include a passenger number detection unit 13. The configuration of the number of passengers detection unit 13 is the same as that of the ninth and eleventh embodiments.
[0171]
　The sensor 14 detects a vehicle traveling in the reversible lane. The sensor 14 irradiates light and receives the reflected light to detect a vehicle traveling in the reversible lane RL. In FIG. 25, the light irradiation direction of the sensor 14 is indicated by C. As shown in the figure, the sensor 14 is configured to detect a vehicle moving in the first traveling direction before entering the shooting area A of the shooting unit 11. Further, the sensor 14 is configured to detect a vehicle traveling in the second traveling direction after passing through the photographing area A of the photographing unit 11. The sensor 14 inputs the sensing result to the photographing unit 11.
[0172]
　The photographing unit 11 performs processing based on the sensing result of the sensor 14 and the new direction of the vehicle. When the traveling direction of the vehicle is the first traveling direction shown in FIG. 25, the photographing unit 11 may determine the photographing timing based on the detection timing of the vehicle obtained by the sensor 14. For example, the photographing unit 11 may start shooting X1 seconds after the vehicle detection timing and end shooting X2 seconds later. In this way, the photographing unit 11 can operate so as to take a picture at the timing when the vehicle is in the shooting area A and not to take a picture when the vehicle is not in the shooting area A.
[0173]
　In addition, when the traveling direction of the vehicle is the first traveling direction shown in FIG. 25, the photographing unit 11 saves an image from the generated image group based on the detection timing of the vehicle obtained by the sensor 14. You may decide. For example, the photographing unit 11 may save the image generated from the time when X1 seconds have passed from the time when X1 seconds have passed from the detection timing of the vehicle to the time when X2 seconds have passed. Then, the photographing unit 11 does not have to save the image generated at other timings. By doing so, the photographing unit 11 may operate so as to save the image generated when the vehicle is in the shooting area A and not to save the image generated when the vehicle is not in the shooting area A1. it can.
[0174]
　On the other hand, when the traveling direction of the vehicle is the second traveling direction shown in FIG. 25, the photographing unit 11 saves an image from the generated image group based on the detection timing of the vehicle obtained by the sensor 14. You may decide. For example, the photographing unit 11 may save the image generated from the time point X3 seconds before the detection timing of the vehicle to the time point X4 seconds before or after the detection timing of the vehicle. Then, the photographing unit 11 does not have to save the image generated at other timings. In this way, the shooting unit 11 may operate so as to save the image generated when the vehicle is in the shooting area A and not to save the image generated when the vehicle is not in the shooting area A. it can.
[0175]
　The other configurations of the photographing unit 11 are the same as those of the tenth and eleventh embodiments.
[0176]
　The number of passengers detection unit 13 may detect the number of passengers in the vehicle based only on the image extracted based on the detection timing of the vehicle obtained by the sensor 14 in the image generated by the photographing unit 11. The "image extracted based on the vehicle detection timing" may be the same image as the above-mentioned "image to be saved determined based on the vehicle detection timing".
[0177]
　Next, the operation and effect of the detection system 10 of the present embodiment will be described. According to the detection system 10 of the present embodiment, the same effects as those of the tenth and eleventh embodiments can be realized. Further, according to the detection system 10 of the present embodiment, the sensor 14 can detect the detection timing of the vehicle, and the processing of the photographing unit 11 can be controlled based on the detection result. As a result, the burden on the photographing unit 11 can be reduced by avoiding shooting at an unnecessary timing and avoiding saving of an unnecessary image. Further, according to the detection system 10 of the present embodiment, the number of sensors 14 can be reduced, so that the cost burden is reduced.
[0178]
　Hereinafter, an example of the reference form will be added.
1. 1. Switching to switch
　the lens optical axis direction of the photographing means based on the photographing means for photographing the reversible lane in which the traveling direction of the vehicle can be switched and the time, user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane.
A detection system having means and .
2. In the detection system according to 1, a detection system
　further comprising a number of passengers detecting means for detecting the number of passengers in the vehicle based on an image generated by the photographing means.
3. 3. In the detection system according to 1 or 2, the
　photographing means is installed in a state where the optical axis directions of the lenses are different from each other, has a plurality of the photographing means for photographing the reversible lane, and the
　switching means has the photographing means for executing the photographing. A detection system that switches the lens optical axis direction of the photographing means by switching.
4. In the detection system according to 1 or 2, the
　photographing means is attached and further has a direction switching mechanism for changing the direction of the photographing means, and the
　switching means controls the direction switching mechanism to perform the photographing. A detection system that switches the direction of the lens optical axis of the means.
5. In the detection system according to 1 or 2, the
　photographing means includes an optical axis variable lens capable of changing the optical axis direction of the lens.
　The switching means is a detection system that switches the lens optical axis direction of the photographing means by controlling the optical axis variable lens.
6. In the detection system according to any one of 1 to 5, the detection system
　has two sensors for detecting vehicles traveling in positions apart from each other in the reversible lane, and the
　switching means is a time, user input, or the reversible. A detection system that switches the sensor that executes sensing based on the detection result of the traveling direction of a vehicle traveling in a lane.
7. In the detection system according to any one of 1 to 5, a sensor
　that irradiates light and receives reflected light to detect a vehicle traveling in the reversible lane and slides the light irradiation direction in the traveling direction of the vehicle. Detection system with.
8. In the detection system according to 6 or 7, the
　photographing means is a detection system that determines an image to be saved from the generated image group based on the detection timing of the vehicle obtained by the sensor.
9. In the detection system according to 6 or 7, the
　photographing means determines the photographing timing based on the detection timing of the vehicle obtained by the sensor.
10. In the detection system according to 6 or 7, the
　photographing means is a detection system that registers the detection timing of the vehicle obtained by the sensor.
11. A shooting means for shooting a reversible lane where the direction of travel of the vehicle can be switched with a wide-angle lens,
　The vehicle has a number of passengers detecting means for detecting the number of passengers of the vehicle based on a part of the wide range image generated by the photographing means,
and the
　number of passengers detecting means is the time when the wide range image is generated or the said. A detection system that determines a part of the wide range image used for detecting the number of passengers based on the traveling direction of a vehicle traveling in a reversible lane.
12. In the detection system according to 11,
　two sensors for detecting vehicles traveling in positions separated from each other in the
　reversible lane, and a detection result of time, user input, or the traveling direction of the vehicle traveling in the reversible lane. Based on this,
a detection system further comprising a switching means for switching the sensor for executing sensing .
13. In the detection system according to 11, a detection system
　having a sensor that detects a vehicle traveling in the reversible lane by irradiating light and receiving reflected light, and slides the light irradiation direction in the traveling direction of the vehicle.
14. In the detection system according to 12 or 13, the
　photographing means is a detection system that determines an image to be saved from the generated image group based on the detection timing of the vehicle obtained by the sensor.
15. In the detection system according to 12 or 13, the
　photographing means determines the photographing timing based on the detection timing of the vehicle obtained by the sensor.
16. In the detection system according to 12 or 13, the
　photographing means is a detection system that registers the detection timing of the vehicle obtained by the sensor.
17. A detection method in which a computer switches the lens optical axis direction of a photographing means for photographing the reversible lane based on a detection result of a vehicle traveling in a reversible lane in which the time, user input, or the traveling direction of the vehicle can be switched.
18. The computer is used as a switching means for switching the lens optical axis direction of the photographing means for photographing the reversible lane based on the time, user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane where the traveling direction of the vehicle can be switched. A program to make it work.
19. The computer
　detects the number of passengers in the vehicle based on a part of the wide-angle image generated by the photographing means for photographing the reversible lane in which the traveling direction of the vehicle is switched with a wide-angle lens, and the time when the wide-angle
　image is generated or A detection method for determining a part of the wide-angle image used for detecting the number of passengers based on the traveling direction of a vehicle traveling in the reversible lane.
20. The computer is
　made to function as a number of passengers detecting means for detecting the number of passengers in the vehicle based on a part of a wide range image generated by the photographing means for photographing the reversible lane in which the traveling direction of the vehicle can be switched with a wide-angle lens.
　The number of passengers detecting means is a program that determines a part of the wide range image used for detecting the number of passengers based on the time when the wide range image is generated or the traveling direction of a vehicle traveling in the reversible lane.
The scope of the claims
[Claim 1]
　Switching to switch
　the lens optical axis direction of the photographing means based on the photographing means for photographing the reversible lane in which the traveling direction of the vehicle can be switched and the time, user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane.
A detection system having means and .
[Claim 2]
　The detection system according to claim 1
　, further comprising a number of passengers detecting means for detecting the number of passengers in the vehicle based on an image generated by the photographing means.
[Claim 3]
　In the detection system according to claim 1 or 2, the
　photographing means is installed in a state in which the optical axis directions of the lenses are different from each other, has a plurality of the photographing means for photographing the reversible lane, and the
　switching means performs the photographing. A detection system that switches the lens optical axis direction of the photographing means by switching the means.
[Claim 4]
　In the detection system according to claim 1 or 2, the
　photographing means is attached and further has a direction switching mechanism for changing the direction of the photographing means, and the
　switching means controls the direction switching mechanism. A detection system that switches the lens optical axis direction of the photographing means.
[Claim 5]
　In the detection system according to claim 1 or 2, the
　photographing means includes an optical axis variable lens capable of changing the lens optical axis direction, and the
　switching means controls the optical axis variable lens to perform the photographing. A detection system that switches the direction of the lens optical axis of the means.
[Claim 6]
　The detection system according to any one of claims 1 to 5 includes
　two sensors for detecting vehicles traveling in positions apart from each other in the reversible lane, and the
　switching means includes time, user input, and so on. Alternatively, a detection system that switches the sensor that executes sensing based on the detection result of the traveling direction of the vehicle traveling in the reversible lane.
[Claim 7]
　In the detection system according to any one of claims 1 to 5,
　a vehicle traveling in the reversible lane is detected by irradiating light and receiving reflected light, and the light irradiation direction is set to the traveling direction of the vehicle. A detection system with a sensor that slides into.
[Claim 8]
　In the detection system according to claim 6, the
　photographing means is a detection system that determines an image to be stored from a group of generated images based on the detection timing of the vehicle obtained by the sensor.
[Claim 9]
　In the detection system according to claim 6 or 7, the
　photographing means determines the photographing timing based on the detection timing of the vehicle obtained by the sensor.
[Claim 10]
　In the detection system according to claim 6 or 7, the
　photographing means is a detection system that registers the detection timing of the vehicle obtained by the sensor.
[Claim 11]
　It has a photographing means for photographing a reversible lane in which the traveling direction of the vehicle can be switched with a wide-angle lens, and
　a passenger number detecting means for detecting the number of passengers of the vehicle based on a part of a wide-range image generated by the photographing means
.
　The passenger number detecting means is a detection system that determines a part of the wide-angle image used for detecting the number of passengers based on the time when the wide-angle image is generated or the traveling direction of a vehicle traveling in the reversible lane.
[Claim 12]
　In the detection system according to claim 11,
　two sensors for detecting vehicles traveling in positions apart from each other in the reversible lane, and detection of
　time, user input, or the traveling direction of the vehicle traveling in the reversible lane.
A detection system further comprising a switching means for switching the sensor for executing sensing based on the result .
[Claim 13]
　The detection system according to claim 11 has a sensor
　that detects a vehicle traveling in the reversible lane by irradiating light and receiving reflected light, and slides the light irradiation direction in the traveling direction of the vehicle. system.
[Claim 14]
　In the detection system according to claim 12 or 13, the
　photographing means is a detection system that determines an image to be stored from the generated image group based on the detection timing of the vehicle obtained by the sensor.
[Claim 15]
　In the detection system according to claim 12 or 13, the
　photographing means determines the photographing timing based on the detection timing of the vehicle obtained by the sensor.
[Claim 16]
　In the detection system according to claim 12 or 13, the
　photographing means is a detection system that registers the detection timing of the vehicle obtained by the sensor.
[Claim 17]
　A detection method in which a computer switches the lens optical axis direction of a photographing means for photographing the reversible lane based on a detection result of a vehicle traveling in a reversible lane in which the time, user input, or the traveling direction of the vehicle can be switched.
[Claim 18]
　The computer is used as a switching means for switching the lens optical axis direction of the photographing means for photographing the reversible lane based on the time, user input, or the detection result of the traveling direction of the vehicle traveling in the reversible lane where the traveling direction of the vehicle can be switched. A program to make it work.
[Claim 19]
　The computer
　detects the number of passengers in the vehicle based on a part of the wide-angle image generated by the photographing means for photographing the reversible lane in which the traveling direction of the vehicle is switched with a wide-angle lens, and the time when the wide-angle
　image is generated or A detection method for determining a part of the wide-angle image used for detecting the number of passengers based on the traveling direction of a vehicle traveling in the reversible lane.
[Claim 20]
　The computer,
　on the basis of the portion of the wide image capturing means has generated to shoot reversible lane travel direction of the vehicle is switched at the wide-angle lens, to function as the number of passengers detecting means for detecting the number of passengers of the vehicle,
　the number of passengers detected The means is a program that determines a part of the wide-angle image used for detecting the number of passengers based on the time when the wide-angle image is generated or the traveling direction of a vehicle traveling in the reversible lane.