The number of distint intensity (gray) values in an gray scale image matlab code?

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somasekar jalari
somasekar jalari 2016-5-17
回答： Guillaume 2016-5-17
for my work, i need the number of intensity values in gray scale image. for example, consider an image a=[100,120;23,100]. the number of intensity values is 3. i need matlab code for the same.

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Guillaume
Guillaume 2016-5-17
Simply count the number of unique values in your image:
numel(unique(a))

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