different color for different region of image

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chess
chess 2014-8-31
评论： Image Analyst 2014-9-1
Hi I have an image, I wonder how to assign different color for different region in the image? For example how can I choose one colormap for blue rectangle and one colormap for green rectangle and the rest of figure uses different colormap.

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Image Analyst
Image Analyst 2014-8-31
That's precisely what my demo does. It's attached below the image. I have a freehand region version (also attached) if you're interested.
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chess
chess 2014-9-1
编辑：chess 2014-9-1
Another problem I have is when I do it for one part using imfreehand how can I hold an image to do it for another region because if I redo the script again it will overwrite the previous one?
Image Analyst
Image Analyst 2014-9-1
Well don't run that part of the script again - the part that reads in the original image. Just run the part that asks for the region and colorizes it. Put it in a for or while loop if you want.

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