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A Method And System For Recognizing Characters On A License Plate

Abstract: This disclosure relates to a method 100 and system 200 for recognizing characters on a license plate. In an embodiment, a method may include capturing an image of the license plate. The license plate may be localized in the captured image. The method of localizing may include semantically segmenting the captured image, assigning a unique colour to the license plate and analyzing the unique colour in the image. After localizing the license plate, the method may pre-process the image of the license plate. Once pre-processing is performed, the characters may be recognized from the pre-processed image. The method of recognizing may include semantically segmenting the pre-processed image, assigning a unique colour to each character in the image and mapping the unique colour with a predefined colour information. On recognizing the characters, the method may post-process the image to convert the recognized characters into a text form.

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Notices, Deadlines & Correspondence

Patent Information

Application #
Filing Date
12 March 2019
Publication Number
38/2020
Publication Type
INA
Invention Field
COMPUTER SCIENCE
Status
Email
patents@ltts.com
Parent Application
Patent Number
Legal Status
Grant Date
2024-12-19
Renewal Date

Applicants

L&T TECHNOLOGY SERVICES LIMITED
DLF IT SEZ Park, 2nd Floor, Block 3, 1/124, Mount Poonamallee Road, Ramapuram, Chennai - 600089.

Inventors

1. SHASHANK VAIKUNT BHAT
#12-2-131/1, Carstreet, Mangalore, Karnataka - 575001.
2. ARANGARAJAN P
#50A, Sindhu Nagar, Aindhupanai, Tiruchengode, Tamil Nadu - 638008.
3. GINEESH SUKUMARAN
#10403, Vijaya Nagar 4th Stage, 2nd Phase, Mysore, Karnataka - 570017.

Specification

1. A method 100 of recognizing characters on a license plate, the method comprising:
capturing an image of the license plate;
localizing the license plate in the captured image, wherein the localizing method comprising:
semantically segmenting the captured image and assigning a unique colour to the license plate in the captured image; and
localizing the license plate by analyzing the unique colour in the captured image assigned by sematic segmentation;
pre-processing the image of the localized license plate; and
recognizing the characters in the pre-processed image, wherein the recognizing method comprising:
semantically segmenting the pre-processed image of the license plate and assigning a unique colour to each character in the image of the license plate; and
recognizing the characters by mapping the unique colour assigned to each character in the image of the license plate with a predefined colour information; and
post-processing the image of the license plate to convert the recognized characters into a text form.
2. The method 100 of recognizing the characters on the license plate as claimed in claim 1, wherein the image capturing device is supported on a stationary post.
3. The method 100 of recognizing the characters on the license plate as claimed in claim 1, wherein the image capturing device is supported on a moving device.
4. The method 100 of recognizing the characters on the license plate as claimed in claim 1, wherein the method of pre-processing the image of the localized license plate

eliminating noise in the image of the localized license plate; and converting the image of the localized license plate into a binary image.
5. The method 100 of recognizing the characters on the license plate as claimed in claim 1, wherein the method is automatic.
6. A system 200 for recognizing characters on a license plate 202, the system 200 comprising:
an image capturing device 204; and
a processor 210 communicatively coupled to the image capturing device 204, wherein the processor 210 comprising:
a localization module 212, the localization module 212 being configured to:
semantical ly segment a captured image and assign a unique colour to the license plate 202 in the captured image; and
localize the license plate 202 by analyzing the unique colour in the captured image assigned by semantic segmentation;
an image pre-processing module 214 configured to pre-process the image of the localized license plate 202 for character recognition;
a character recognition module 216, the character recognition module 216 being configured to:
semantically segment the pre-processed image of the license plate 202 and assign a unique colour to each character in the image of the license plate 202; and
recognize the characters by mapping the unique colour assigned to each character in the image of the license plate 202 with a predefined colour information; and
an image post-processing module 218 configured to post-process the ^ T OFF! CiStogCofttocf-licciis^plate ?.02tp conyert^he ipcpgnized characters into a text form.

7. The system 200 for recognizing characters on the license plate 202 as claimed in
claim 6, wherein the localization module 212 comprising:
a deep learning based semantically segmenting module for the captured image;
a database having predefined information related to unique colour assigned to the license plate 202 by the deep learning based semantically segmenting module; and
a deep learning based image analyzer to analyse the unique colour assigned in the semantically segmented image and localize the license plate 202 in the image.
8. The system 200 for recognizing characters on the license plate 202 as claimed in
claim 6, wherein the character recognition module 216 comprising:
a deep learning based semantically segmenting module for the pre-processed image;
a database having predefined information related to unique colour assigned to each character by the deep learning based semantically segmenting module; and
a deep learning based image analyzer to map the colours assigned to each character in the semantically segmented image with the predefined colour information and recognize the characters on the license plate 202.

Documents

Orders

Section Controller Decision Date

Application Documents

# Name Date
1 201941009524-FORM 13 [16-07-2024(online)].pdf 2024-07-16
1 201941009524-IntimationOfGrant19-12-2024.pdf 2024-12-19
1 Form5_As Filed_12-03-2019.pdf 2019-03-12
2 201941009524-FORM-26 [16-07-2024(online)].pdf 2024-07-16
2 201941009524-PatentCertificate19-12-2024.pdf 2024-12-19
2 Form3_As Filed_12-03-2019.pdf 2019-03-12
3 201941009524-FORM 13 [16-07-2024(online)].pdf 2024-07-16
3 201941009524-PETITION UNDER RULE 137 [16-07-2024(online)].pdf 2024-07-16
3 Form2 Title Page_Provisional_12-03-2019.pdf 2019-03-12
4 Form1_As Filed_12-03-2019.pdf 2019-03-12
4 201941009524-RELEVANT DOCUMENTS [16-07-2024(online)].pdf 2024-07-16
4 201941009524-FORM-26 [16-07-2024(online)].pdf 2024-07-16
5 Correspondence by Applicant_F1, F2, F3 and F5_12-03-2019.pdf 2019-03-12
5 201941009524-Written submissions and relevant documents [16-07-2024(online)].pdf 2024-07-16
5 201941009524-PETITION UNDER RULE 137 [16-07-2024(online)].pdf 2024-07-16
6 Form1_After Filing_17-05-2019.pdf 2019-05-17
6 201941009524-RELEVANT DOCUMENTS [16-07-2024(online)].pdf 2024-07-16
6 201941009524-Correspondence to notify the Controller [18-04-2024(online)].pdf 2024-04-18
7 Correspondence by Applicant_ Form-1_17-05-2019.pdf 2019-05-17
7 201941009524-Written submissions and relevant documents [16-07-2024(online)].pdf 2024-07-16
7 201941009524-US(14)-HearingNotice-(HearingDate-05-07-2024).pdf 2024-04-17
8 201941009524-ABSTRACT [30-08-2023(online)].pdf 2023-08-30
8 201941009524-Correspondence to notify the Controller [18-04-2024(online)].pdf 2024-04-18
8 201941009524-Form2 Title Page_Complete_28-02-2020.pdf 2020-02-28
9 201941009524-CLAIMS [30-08-2023(online)].pdf 2023-08-30
9 201941009524-Form-1_After provisional_28-02-2020.pdf 2020-02-28
9 201941009524-US(14)-HearingNotice-(HearingDate-05-07-2024).pdf 2024-04-17
10 201941009524-ABSTRACT [30-08-2023(online)].pdf 2023-08-30
10 201941009524-COMPLETE SPECIFICATION [30-08-2023(online)].pdf 2023-08-30
10 201941009524-Description Complete_After provisional_28-02-2020.pdf 2020-02-28
11 201941009524-CLAIMS [30-08-2023(online)].pdf 2023-08-30
11 201941009524-Correspondence_After provisional_28-02-2020.pdf 2020-02-28
11 201941009524-DRAWING [30-08-2023(online)].pdf 2023-08-30
12 201941009524-Claims_After provisional_28-02-2020.pdf 2020-02-28
12 201941009524-COMPLETE SPECIFICATION [30-08-2023(online)].pdf 2023-08-30
12 201941009524-FER_SER_REPLY [30-08-2023(online)].pdf 2023-08-30
13 201941009524-FORM-26 [30-08-2023(online)].pdf 2023-08-30
13 201941009524-DRAWING [30-08-2023(online)].pdf 2023-08-30
13 201941009524-Abstract _After provisional_28-02-2020.pdf 2020-02-28
14 201941009524-Correspondence_Amend the email addresses_14-12-2021.pdf 2021-12-14
14 201941009524-FER_SER_REPLY [30-08-2023(online)].pdf 2023-08-30
14 201941009524-OTHERS [30-08-2023(online)].pdf 2023-08-30
15 201941009524-FER.pdf 2023-03-02
15 201941009524-FORM-26 [30-08-2023(online)].pdf 2023-08-30
15 201941009524-Form18_Examination request_14-12-2022.pdf 2022-12-14
16 201941009524- Correspondence_Form-18_14-12-2022.pdf 2022-12-14
16 201941009524-Correspondence_Update Email Id_14-12-2022.pdf 2022-12-14
16 201941009524-OTHERS [30-08-2023(online)].pdf 2023-08-30
17 201941009524- Correspondence_Form-18_14-12-2022.pdf 2022-12-14
17 201941009524-Correspondence_Update Email Id_14-12-2022.pdf 2022-12-14
17 201941009524-FER.pdf 2023-03-02
18 201941009524- Correspondence_Form-18_14-12-2022.pdf 2022-12-14
18 201941009524-FER.pdf 2023-03-02
18 201941009524-Form18_Examination request_14-12-2022.pdf 2022-12-14
19 201941009524-Correspondence_Amend the email addresses_14-12-2021.pdf 2021-12-14
19 201941009524-Correspondence_Update Email Id_14-12-2022.pdf 2022-12-14
19 201941009524-OTHERS [30-08-2023(online)].pdf 2023-08-30
20 201941009524-Abstract _After provisional_28-02-2020.pdf 2020-02-28
20 201941009524-FORM-26 [30-08-2023(online)].pdf 2023-08-30
20 201941009524-Form18_Examination request_14-12-2022.pdf 2022-12-14
21 201941009524-FER_SER_REPLY [30-08-2023(online)].pdf 2023-08-30
21 201941009524-Correspondence_Amend the email addresses_14-12-2021.pdf 2021-12-14
21 201941009524-Claims_After provisional_28-02-2020.pdf 2020-02-28
22 201941009524-Abstract _After provisional_28-02-2020.pdf 2020-02-28
22 201941009524-Correspondence_After provisional_28-02-2020.pdf 2020-02-28
22 201941009524-DRAWING [30-08-2023(online)].pdf 2023-08-30
23 201941009524-Claims_After provisional_28-02-2020.pdf 2020-02-28
23 201941009524-COMPLETE SPECIFICATION [30-08-2023(online)].pdf 2023-08-30
23 201941009524-Description Complete_After provisional_28-02-2020.pdf 2020-02-28
24 201941009524-Form-1_After provisional_28-02-2020.pdf 2020-02-28
24 201941009524-Correspondence_After provisional_28-02-2020.pdf 2020-02-28
24 201941009524-CLAIMS [30-08-2023(online)].pdf 2023-08-30
25 201941009524-ABSTRACT [30-08-2023(online)].pdf 2023-08-30
25 201941009524-Description Complete_After provisional_28-02-2020.pdf 2020-02-28
25 201941009524-Form2 Title Page_Complete_28-02-2020.pdf 2020-02-28
26 201941009524-Form-1_After provisional_28-02-2020.pdf 2020-02-28
26 201941009524-US(14)-HearingNotice-(HearingDate-05-07-2024).pdf 2024-04-17
26 Correspondence by Applicant_ Form-1_17-05-2019.pdf 2019-05-17
27 201941009524-Correspondence to notify the Controller [18-04-2024(online)].pdf 2024-04-18
27 201941009524-Form2 Title Page_Complete_28-02-2020.pdf 2020-02-28
27 Form1_After Filing_17-05-2019.pdf 2019-05-17
28 201941009524-Written submissions and relevant documents [16-07-2024(online)].pdf 2024-07-16
28 Correspondence by Applicant_ Form-1_17-05-2019.pdf 2019-05-17
28 Correspondence by Applicant_F1, F2, F3 and F5_12-03-2019.pdf 2019-03-12
29 201941009524-RELEVANT DOCUMENTS [16-07-2024(online)].pdf 2024-07-16
29 Form1_After Filing_17-05-2019.pdf 2019-05-17
29 Form1_As Filed_12-03-2019.pdf 2019-03-12
30 201941009524-PETITION UNDER RULE 137 [16-07-2024(online)].pdf 2024-07-16
30 Correspondence by Applicant_F1, F2, F3 and F5_12-03-2019.pdf 2019-03-12
30 Form2 Title Page_Provisional_12-03-2019.pdf 2019-03-12
31 Form3_As Filed_12-03-2019.pdf 2019-03-12
31 Form1_As Filed_12-03-2019.pdf 2019-03-12
31 201941009524-FORM-26 [16-07-2024(online)].pdf 2024-07-16
32 Form5_As Filed_12-03-2019.pdf 2019-03-12
32 Form2 Title Page_Provisional_12-03-2019.pdf 2019-03-12
32 201941009524-FORM 13 [16-07-2024(online)].pdf 2024-07-16
33 Form3_As Filed_12-03-2019.pdf 2019-03-12
33 201941009524-PatentCertificate19-12-2024.pdf 2024-12-19
34 Form5_As Filed_12-03-2019.pdf 2019-03-12
34 201941009524-IntimationOfGrant19-12-2024.pdf 2024-12-19

Search Strategy

1 201941009524E_01-03-2023.pdf

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