2 Euro Coin detector which Country is it? Is it front or backside from this coin?

asked 2015-03-06 04:19:49 -0600

i want to build a smal "2 Euro Coin" Sortermachine. Only "2 Euro Coins" no other are inside the System. But the first Level is to detect this "2 Euro Coins" with a Webcam. After this will be work, come the mechanic to sort over a carousel to sort it out. Maybe LEGO or some Thing else. Relaycard inside a PC...

What i want is to cognition or identification is:

  • Webcam see the Frontside or backside of the "2 Euro Coin"
  • if backside which Country is it?

Known Problems can be:

  • 2 Euro Coins can be lay under or in front of the Webcam in different Angels

Things and Ideas:

  • Light around the Webcam. All Pictures and watches on the coins are with the same conditions
  • The same Background for the Pictures
  • Webcam mounted direct over 2 Euro Coins - Database with Pictures from Coins that i have to detect other coins easyer

Tips for programming !?

Who can give me Tips or Ideas for Librarys or technics who can help me to find a solution or method of Resolution. Java

Thanks for some Tips or Ideas to solve my Problem


Here are some Pictures. Pictures not shot with this Webcam. Only with the iPhone. This is not a direct look up in the coin. These a only to Show you. Webcam on a Aluminiumplate for later Lightning 2 Euro Coin in different Angle

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Simply said, a rotation invariant feature detector and matcher to a database. You could use SURF or SIFT if you do not care about licenses, or apply rotation inviariance to for example BRIEF like described here by @GilLevi. Certainly since your images will contain NO clutter at all, this approach should work pretty well.

StevenPuttemans gravatar imageStevenPuttemans ( 2015-03-06 04:30:02 -0600 )edit

Hello, i will bring up my old project that i have not finished. Any new fresh ideas how can i solv that?

DarkSkies gravatar imageDarkSkies ( 2020-04-13 12:01:53 -0600 )edit

What about the comment by StevenPuttemans? Did you give it a try?

Witek gravatar imageWitek ( 2020-04-13 17:38:20 -0600 )edit