MATLAB Function Reference |
Convert HSV colormap to RGB colormap
Syntax
Description
M = hsv2rgb(H)
converts a hue-saturation-value (HSV) colormap to a red-green-blue (RGB) colormap. H
is an m-by-3 matrix, where m is the number of colors in the colormap. The columns of H
represent hue, saturation, and value, respectively. M
is an m-by-3 matrix. Its columns are intensities of red, green, and blue, respectively.
rgb_image = hsv2rgb(hsv_image)
converts the HSV image to the equivalent RGB image. HSV is an m-by-n-by-3 image array whose three planes contain the hue, saturation, and value components for the image. RGB is returned as an m-by-n-by-3 image array whose three planes contain the red, green, and blue components for the image.
Remarks
As H(:,1)
varies from 0 to 1, the resulting color varies from red through yellow, green, cyan, blue, and magenta, and returns to red. When H(:,2)
is 0, the colors are unsaturated (i.e., shades of gray). When H(:,2)
is 1, the colors are fully saturated (i.e., they contain no white component). As H(:,3)
varies from 0 to 1, the brightness increases.
The MATLAB hsv
colormap uses hsv2rgb([hue
saturation
value])
where hue
is a linear ramp from 0 to 1, and saturation
and value
are all 1's.
See Also
Color Operations for related functions
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