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C++ API

: rgb_map = hsv2rgb (hsv_map)

: rgb_img = hsv2rgb (hsv_img)

Transform a colormap or image from HSV to RGB color space.

A color in HSV space is represented by hue, saturation and value (brightness) levels in a cylindrical coordinate system. Hue is the azimuth and describes the dominant color. Saturation is the radial distance and gives the amount of hue mixed into the color. Value is the height and is the amount of light in the color.

The input can be both a colormap or RGB image. In the case of floating point input, values are expected to be on the [0 1] range. In the case of hue (azimuth), since the value corresponds to an angle, mod (h, 1) is used.

>> hsv2rgb ([0.5 1 1])
⇒ ans = 0 1 1

>> hsv2rgb ([2.5 1 1])
⇒ ans = 0 1 1

>> hsv2rgb ([3.5 1 1])
⇒ ans = 0 1 1

Output class and size will be the same as input.

See also: rgb2hsv, ind2rgb, ntsc2rgb.

Package: octave