please explain size function in MATLAB
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if(size(img,3) == 1) disp('Error: Pick a color image'); return;
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Image Analyst
2017-10-18
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size(img,3) returns the number of color channels in an image. It will be 1 for a gray scale image and 3 for an RGB image. That should explain it (why they ask for a color image if the program was given a gray scale image).
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2017-10-18
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