The tricky part is that imfindcircles gets confused between the inner white circle and the boundary. How do I use edge detect on just the black circle ? I would like to completely transform this image into pure black and white image so that I can use imfindcircles to get the answers. Any advise is appreciated.
MATLAB: How to find the radius and count of the black circles (blobs) in the image.
digital image processinghole fillingImage Processing ToolboxMATLAB
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