Regarding color detectin and recognition

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...

Answer 1

[Image Analyst]

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

[Chetan]

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]

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.