DESC:DETECTING SYNTHETIC GEMSTONES USING IMAGE PROCESSING ,CLAIMS:1. A method for detecting synthetic gemstones using image processing, the method comprising:
receiving, by a computing device (114), an image of a pattern (200) of a gemstone (102) created on a screen (110) on reflection of a laser beam (106), wherein the pattern (200) includes a plurality of spots;
identifying, by the computing device (114), co-ordinates of the plurality of spots in the image, wherein the identification is based on at least one image processing technique;
based on the co-ordinates, obtaining, by the computing device (114), a final pattern of spots corresponding to the gemstone (102); and
analyzing, by the computing device (114), the final pattern to identify whether the gemstone (102) is synthetic.
2. The method as claimed in claim 1 further comprising:
illuminating, by an illumination means (104), the gemstone (102) with the laser beam (106), wherein the laser beam (106) gets reflected upon striking the gemstone (102); and
capturing, by an image capturing device (112), the image of the pattern (200) created on the screen (110) as a result of the reflection of the laser beam (106).
3. The method as claimed in claim 1, wherein the analyzing comprises identifying if there are any symmetrical gaps (204) in an outer area of the captured pattern.
4. The method as claimed in claim 3, wherein the analyzing further comprises checking if a degree of rotation of the symmetrical gaps (204) is between 12 to 24.
5. The method as claimed in claim 3, wherein the analyzing comprises identifying if the symmetrical gaps (204) are found in about 50% of the outer area of the captured pattern.
6. The method as claimed in claim 1, wherein the identifying comprises converting the image into a black and white image.
7. The method as claimed in claim 1, wherein the obtaining the final pattern comprises subtracting co-ordinates of the plurality of white spots from a pre-defined calibrated image centre point.
8. A gemstone evaluation apparatus (100) comprising:
an illumination means (104) disposed at a right angle from a gemstone (102), wherein the illumination means (104) is configured to illuminate the gemstone (102) with a laser beam (106), and wherein the laser beam (106) is passed through a prism (108) before the laser beam (106) strikes the gemstone (102);
a screen (110) located between the gemstone (102) and the prism (108) to project a pattern (200) of scattered laser beam (106) upon reflecting from the gemstone (102), wherein the pattern (200) is created in the form of a plurality of spots;
an image capturing device (112) placed opposite to the screen (110) such that the image capturing device (112) captures an image of the pattern (200) projected on the screen (110); and
a computing device (114) coupled to the image capturing device (112), wherein the computing device (114) determines presence of symmetrical gaps (204) and degree of rotation of the symmetrical gaps (204) in the pattern (200) of the gemstone (102) to determine whether the gemstone (102) is synthetic.
9. The gemstone evaluation apparatus (100) as claimed in claim 8 further comprises a gemstone holder for holding the gemstone (102), wherein the gemstone holder automatically positions the gemstone (102) in a pre-determined upright position.
10. The gemstone evaluation apparatus (100) as claimed in claim 8, wherein the computing device (114), further
converts the image into a black and white image; and
subtracts co-ordinates of the plurality of spots from a pre-defined calibrated image centre point to obtain a final pattern of the gemstone (102).
11. The gemstone evaluation apparatus (100) as claimed in claim 10, wherein the computing device (114) further,
identifies if any symmetrical gaps (204) are present in an outer area of the final pattern; and
checks whether a degree of rotation of the symmetrical gaps (204) is between 12 to 24, wherein the presence of the symmetrical gaps (204) and the degree of rotation between 12 to 24 indicates that the gemstone (102) is synthetic.
12. A computing device (114) for determining whether a gemstone (102) is synthetic, the computing device (114) comprising:
a processor;
a pattern identification module, coupled to the processor, to,
receive an image of a pattern (200) of the gemstone (102) created on a screen (110) on reflection of a laser beam (106), wherein the pattern (200) includes a plurality of spots;
identify co-ordinates of the plurality of spots in the image, wherein the identification is based on at least one image processing technique; and
based on the co-ordinates, obtain a final pattern of spots corresponding to the gemstone (102), wherein the co-ordinates of the plurality of spots are subtracted from a pre-defined calibrated image centre point to obtain a final pattern of the gemstone (102); and
an evaluation module, coupled to the processor, to,
identify if there are any symmetrical gaps (204) in an outer area of the captured pattern; and
determine whether a degree of rotation of the symmetrical gaps (204) is between 12 to 24, wherein the presence of the symmetrical gaps (204) and the degree of rotation between 12 to 24 indicates that the gemstone (102) is synthetic.