how to find border irregularity of skin lesion?

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joynob ahmed
joynob ahmed 2020-3-7
回答： Ralf U. 2020-3-11
I have determined other features of skin lesion except this. Please help me out with this feature extraction
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Hank
Hank 2020-3-9
If there is strong contrast between the lesion and the surrounding skin this assisted freehand tool may help. Can you attach an example image?
joynob ahmed
joynob ahmed 2020-3-9
As i have to perform this operation on more than 200 images it is not possible to do this by hand drawing.Though I didn't understand your answer I have attached an image.

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Ralf U.
Ralf U. 2020-3-11
A simple (not necessarily robust) way to do this is to convert the image to B/W (threshold after Gauss filtering) and use the bwtraceboundary function to determine the boundary.

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