number of pixels inside circles of different radius on a single picture
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Dhandapani.S
on 6 Jan 2015
Commented: Dhandapani.S
on 26 Jan 2015
i wanted to draw circles with different radius on a picture and count number of pixels inside each circle coverage..
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Image Analyst
on 6 Jan 2015
A similar demo of mine is attached.
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Image Analyst
on 25 Jan 2015
You won't know if there are any detached blobs unless you cover the whole image. What if there was a white spot way on the right side just before the right edge of the image? If you had stopped the first time the circle added zero pixels, then you never would get that blob, so the algorithm would not be robust.
For triangles, use poly2mask() to define the binary mask. I'm sure you can figure it out after looking at the help for poly2mask.
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