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access regions from imgradient output?

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hajer jon
hajer jon 2019-9-18
关闭： MATLAB Answer Bot 2021-8-20
Hi
i wrot this code to get region in crowd image but the edge of all body still not detect good?!!
[Gmag, Gdir] = imgradient (rgb2gray(imca));
bn= imbinarize(Gmag,0.5);
ggg=edge(rgb2gray(imca),'Sobel');
figure,imshow(ggg);

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