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rgb2hsv
Convert RGB colormap to HSV colormapcmap = rgb2hsv(M)
cmap = rgb2hsv(M)
converts a RGB colormap, M, to a HSV colormap, cmap. Both colormaps are m-by-3 matrices. The elements of both colormaps are in the range 0 to 1.
The columns of the input matrix, M, represent intensities of red, green, and blue, respectively. The columns of the output matrix, cmap, represent hue, saturation, and value, respectively.
brighten,colormap,hsv2rgb,rgbplot