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I have large data sets of grayscale images of 1024*2048 pixels. What is a fast method to count the number of oversaturated pixels in image columns? The following example shows what I did: SeedRandom[1]; imageData = RandomInteger[255, {100, 200}]; image = Image[imageData, “Byte”] n = Count[#, value_ /; value == 255] & /@ Transpose@imageData; ListPlot[n,Read more