Color Image processing

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I have an image from thermal camera that most parts are red ( the temperature is high) and some places the color is bright ( light yellow or something near that). I want to distinguish those light color area from the other region and extract the coordinates. Does any body can provide any guidance.

Thanks a billion.

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Sean Lawson 2012-3-6

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You can convert the RGB image to LAB space, in that way, you could distinguish different colors regardless what brightness they have. There is a MATLAB tutorial that may be helpful:

http://www.mathworks.com/products/demos/image/color_seg_k/ipexhistology.html

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khatereh 2012-3-6

Thanks for your reply. My problem is not the brightness. I mean some colors are light like yellow and the others are dark. I want to got the coordinates of the Sections that differs from the majority.

Thanks

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