Regarding color detectin and recognition

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Chetan
Chetan 2014-2-15
评论： Image Analyst 2014-2-16
Greetings .. i have been seing ur posts and the help u r providing... i am new to matlab and looking for help in color detection and recognition .. please let me if there are any inbuilt commands or codes available...

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回答（1 个）

Image Analyst
Image Analyst 2014-2-15
Not sure who "ur" and "u" is, but have you seen my posts or File Exchange : http://www.mathworks.com/matlabcentral/fileexchange/authors/31862 Lots of color demos there.
Also see Professor Stephen Westland's Computational Colour Science code (that accompanies his book on the subject): http://www.mathworks.com/matlabcentral/fileexchange/?search_submit=fileexchange&query=westland&term=westland
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Chetan
Chetan 2014-2-16
Could u be more specific on which one of those multiple codes be helpful to me in detecting a specific color and recognizing the same.. All i need is a snapshot which has red (for example) should be able to remove rest of the elements and show only red(which i was able to do so far) and now i want the system to know that it has detected red...!!
Thank u so much for the help
Image Analyst
Image Analyst 2014-2-16
Did you notice that the screenshot for http://www.mathworks.com/matlabcentral/fileexchange/31118-color-segmentation-by-delta-e-color-difference has detected all the red objects in the image ? That seems like a natural one to try first.
Regarding "knowing" that it has detected red, just sum up the red mask image
redPixelsExist = sum(redMask(:)) >= 1;
If there is at least one red pixel, redPixelsExist will give you a true value, otherwise if no red is there redPixelsExist will be false.

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