MATLAB: Divide RGB color space into 16x16x16 bins

image processing

How to divide RGB color space into 16x16x16 bins.
And then calculate the number of the bins, into which there are pixels to be divided

Best Answer

Assuming your image is of type double (i.e: intensity range is 0-1), then:
bins = linspace(0, 1, 16);  %if image is uint8, then linspace(0, 255, 16)
bincoords = discretize(rgbimage, bins);
bincoords(row, col, :) is a 3 element vector giving you the location of pixel(row, col) into that 16x16x16 histogram cube. If you want to change that into linear indices:
bincoordslinear = sub2ind([16 16 16], bincoords(:, :, 1), bincoords(:, :, 2), bincoords(:, :, 3));
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