TW200943234A - Coin authenticity judging method and device thereof - Google Patents
Coin authenticity judging method and device thereofInfo
- Publication number
- TW200943234A TW200943234A TW97112909A TW97112909A TW200943234A TW 200943234 A TW200943234 A TW 200943234A TW 97112909 A TW97112909 A TW 97112909A TW 97112909 A TW97112909 A TW 97112909A TW 200943234 A TW200943234 A TW 200943234A
- Authority
- TW
- Taiwan
- Prior art keywords
- incuse
- medal
- relief portion
- image
- image processing
- Prior art date
Links
Landscapes
- Testing Of Coins (AREA)
Abstract
With a coin authenticity judging method and a device thereof according to an embodiment of the present invention, image data of an incuse/relief portion 14 formed on a surface of a medal 13 are acquired by capturing an image of the incuse/relief portion 14 by means of an image sensor 23 disposed so as to oppose the medal 13 substantially straightly, while illuminating light from a light source disposed obliquely above the medal 13, and an image processing of using two or more predetermined threshold values to multinarize brightness information, including shading related to the incuse/relief portion 14, in the acquired image data into three or more values is performed. By the image processing of multinarization into the three or more values, the medal 13 surface is regionally divided in to at least a profile region 14-1, a top surface region 14-2a, and a bottom surface region 14-2b in the incuse/relief portion 14. The authenticity of the medal 13 is then judged based on shape data of the incuse/relief portion 14 obtained by the image processing and master data, including a shape of an incuse/relief portion 14 formed on a surface of an authentic medal 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97112909A TW200943234A (en) | 2008-04-09 | 2008-04-09 | Coin authenticity judging method and device thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW97112909A TW200943234A (en) | 2008-04-09 | 2008-04-09 | Coin authenticity judging method and device thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
TW200943234A true TW200943234A (en) | 2009-10-16 |
Family
ID=44868973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW97112909A TW200943234A (en) | 2008-04-09 | 2008-04-09 | Coin authenticity judging method and device thereof |
Country Status (1)
Country | Link |
---|---|
TW (1) | TW200943234A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI559261B (en) * | 2014-12-08 | 2016-11-21 | Identify methods of forging coins |
-
2008
- 2008-04-09 TW TW97112909A patent/TW200943234A/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI559261B (en) * | 2014-12-08 | 2016-11-21 | Identify methods of forging coins |
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