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please explain size function in MATLAB

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tina jain
tina jain 2017-10-18
回答： Image Analyst 2017-10-18
if(size(img,3) == 1) disp('Error: Pick a color image'); return;

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Image Analyst
Image Analyst 2017-10-18
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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