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How to remove surrounding white areas in a easy way ?

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Piyum Rangana
Piyum Rangana 2017-4-16
评论： Piyum Rangana 2017-4-16
Consider the below image. By finding the mean value of the pixels surrounded of the ROIs(degraded/damaged regions) filled out the ROIs with it. Now I need to remove the surrounded white areas of those filled regions. How can I do this in a easy way.?

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Image Analyst
Image Analyst 2017-4-16
Dilate your mask one layer of pixels with imdilate().

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