sharpening or cleaning this binary mask
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Hi, Image Analyst.,Could you please help me in sharpening or cleaning this binary mask please which is attached here. I have tried alot and got this refinement only. please suggest something.
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jonas
am 31 Jul. 2020
I am not image Analyst, but I'm guessing you will get a better answer if you describe your desired image. Personally I don't see a lot of noise in your image. Do you want smoother edges? Do you want to fill the small black areas inside the main blob?
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Image Analyst
am 1 Aug. 2020
You could blur the image and threshold it.
windowWidth = 7; % Whatever - bigger gives more smoothing, experiment with different values.
kernel = ones(windowWidth, windowWidth) / windowWidth^2;
smoothBW = conv(single(bw), kernel, 'same') > 0.5;
Or you could use a savitzky Golay filter to smooth the boundaries and then use poly2mask on the smoothed boundaries. Demo attached.
Or you could use activecontour(). Demo attached.
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