how to make a particular region to appear white in color

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vidya
vidya 2013-12-17
回答： Image Analyst 2013-12-17
hello I am creating a image mask of a retina image. i want a particular region to be white in color ..is it possible to do ? how can i do it? i want the region inside the ring to be white in color. to get this image i have applied morphology and canny edge detection

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Image Analyst
Image Analyst 2013-12-17
binaryImage = imfill(binaryImage, 'holes');

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