How to determine which boundaries are rough and smooth?
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How can Matlab determine the roughness along the boundary of an edge? For example, how can Matlab determine that the 1st image is smooth and the 2nd one is rough?
![smooth.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/206032/smooth.png)
![rough.png](https://www.mathworks.com/matlabcentral/answers/uploaded_files/206033/rough.png)
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Image Analyst
il 27 Feb 2019
Several ways, like smooth the boundary and find the residuals between the original coordinates and the smoothed coordinates. See attached demo for a start.
Or you could smooth the image with activecontour() or blurring and thresholding or using imclose(), then using xor() on the smoothed and original image and summing the white pixels in the result with bwarea() or sum().
Pick one and give it a try.
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