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Automatically fit a circle on an arc in image and to plot the circle in the image.

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I have an processed image (top image as shown here) where I have an arc portion that can be fitted into a circle. I need to fit an appropriate circle on this arc and plot it in the existing image (as shown in the bottom image). I need to fit the circle on the arc automatically as I have to go through batch of images for this process. How can I get the bottom image from the top one? FYI, the second image is cropped from word file and looks magnified.

Accepted Answer

Jonas on 8 Jul 2021
This may help you
Jonas on 8 Jul 2021
Edited: Jonas on 8 Jul 2021
on your image im. this finds all non zero elements in the image. you can then delete some points with big and small x coordinate to remove the influence of the non arc part at the ends of the white shape

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More Answers (1)

Stephan on 8 Jul 2021
This example from the documentation appears to be suitable for your case.




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