This problem was inspired by a tweet I saw from @MATLAB regarding The Warholer.
Given an MxNx3 array (A) representing an image and a threshold for each channel (r/g/b), generate a new array (B) whose elements are 255 if greater than the threshold for that channel or 0 otherwise. This means the new "image" will only have 8 colors.
You may assume that the inputs are on the interval [0,255].
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Solution 296662
RESPECT!!!
I didn't knew the function "shiftdim"... I use always "permute" for this purpose. :-P
Very nice!!!