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How can I smooth a 2D boundary ?

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Sleh Eddine Brika
Sleh Eddine Brika 2016-10-25
评论： Image Analyst 2019-5-29
Hello, I have a N*2 matrix of x,y coordinates. I need to smooth the boundary. I tried with interp2 but I didn't get something nice.

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Image Analyst
Image Analyst 2016-10-25
Lots of ways. One way is to use splines:
Another way is to use a Savitzky-Golay filter.
I'm attaching demos for each of these methods.
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Image Analyst
Image Analyst 2019-5-29
mask = poly2mask(x, y, rows, columns);
props = regionprops(mask, 'Area', 'Perimeter');
props is a structure or structure array where each structure will have an Area field, and a Perimeter field.

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