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how to average image pixels without taking black color pixels (pixel=0)
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i'm using m= mean2 (current_image);
mean2 takes all pixels ,the balckpixel=0 do not have value but they are counted in total number of pixels ( n )
mean2= h1+h2+....+h10+....+hn / n
if h1 = 0 ,so it is not counted in numerator but it is counted in the denominator
i wantn't count them in denominator
thanks in advance
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