MATLAB: Masking certain RGB values for an image

Image Processing Toolboxmaskingrgb

Hello. I was wondering if there is a way to mask/delete certain pixels in an image if you know the range of RGB values you want to remove. Thanks for any help, Olly

Best Answer

Yes.
RGB  = rand(400, 200, 3);
R    = RGB(:, :, 1);
G    = RGB(:, :, 2);
B    = RGB(:, :, 3);
mask2D = (0.2 < R & R < 0.3) & ...  % [EDITED]: && -> &
         (0.1 < G & G < 0.4) & ...
         (0.6 < B & B < 0.65);
mask   = cat(3, mask2D, mask2D, mask2D);
RGB(mask) = 0;
I do not know how a pixel could be deleted without destroying the shape of the image.
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