How to find x,y coordinate from an image?

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Hi, I need some help here, How to find x,y coordinate from an image?
I want to finding x,y coordinate of a white dot in a black cycle, and store the x,y coordinate in the variable array.

Example Image

<img border="0" src="http://upic.me/i/iv/test1.jpg">

I really need any ideas and suggestion urgently.

Thank you so much.

Posted 2-Sep-13 8:32am

Wein19

Updated 2-Sep-13 8:35am

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**Zoltán Zörgő** · Answer 1 · 2013-09-02T09:03:00

Solution 1

I assume you could use Haar cascade method to find these objects.
The .net port of OpenCV - EmguCV - has such a method implemented: http://www.emgu.com/wiki/files/2.0.0.0/html/8071f5d0-e119-4ba7-308c-0002cb8fb90a.htm[^]
You will need to train the classifier to recognize the patterns: http://docs.opencv.org/doc/user_guide/ug_traincascade.html[^]

Posted 2-Sep-13 9:03am

Zoltán Zörgő

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Wein19 3-Sep-13 16:32pm

Thank you so much

Zoltán Zörgő 3-Sep-13 16:33pm

If you find my answer helpful, feel free to accept it.