askin color thresholding
2018-01-20
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I=imread('filename'); I=double(I); [hue,s,v]=rgb2hsv(I); cb = 0.148* I(:,:,1) - 0.291* I(:,:,2) + 0.439 * I(:,:,3) + 128; cr = 0.439 * I(:,:,1) - 0.368 * I(:,:,2) -0.071 * I(:,:,3) + 128; [w h]=size(I(:,:,1)); for i=1:w for j=1:h if 140<=cr(i,j) && cr(i,j)<=165 && 140<=cb(i,j) && cb(i,j)<=195 && 0.01<=hue(i,j) && hue(i,j)<=0.1 segment(i,j)=1; else segment(i,j)=0; end end end % imshow(segment); im(:,:,1)=I(:,:,1).*segment; im(:,:,2)=I(:,:,2).*segment; im(:,:,3)=I(:,:,3).*segment; figure,imshow(uint8(im));
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