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Справка Scilab >> Графики > color_management > hsv2rgb

hsv2rgb

Converts HSV colors to RGB

Syntax

[r,g,b] = hsv2rgb(h,s,v)
rgb = hsv2rgb(h,s,v)
[r,g,b] = hsv2rgb(hsv)
rgb = hsv2rgb(hsv)

Arguments

h

a vector of size n. The "hue" values.

s

a vector of size n. The "saturation" values.

v

a vector of size n. The "value" values

hsv

a n x 3 matrix. Each row contains a [hue saturation value] triple.

r

a column vector of size n. The associated "red" values.

g

a column vector of size n. The associated "green" values.

b

a column vector of size n. The associated "blue" values.

rgb

a n x 3 matrix. Each row contains a [red green blue] triple.

Description

The function hsv2rgb converts colormaps between the RGB and HSV color spaces. As hue varies from 0 to 1.0, the corresponding colors vary from red through yellow, green, cyan, blue, magenta, and back to red, so that there are actually red values both at 0 and 1.0. As saturation varies from 0 to 1.0, the corresponding colors (hues) vary from unsaturated (shades of gray) to fully saturated (no white component). As value, or brightness, varies from 0 to 1.0, the corresponding colors become increasingly brighter.

Examples

t = [0:0.3:2*%pi]';
z = sin(t)*cos(t');
plot3d1(t,t,z)
f = gcf();
for h = 0:0.1:1
  hsv = [h*ones(32,1) linspace(0,1,32)' 0.7*ones(32,1)];
  f.color_map = hsv2rgb(hsv);
  sleep(10)
end
for v = 0:0.1:1
  hsv = [ones(32,1) linspace(0,1,32)' v*ones(32,1)];
  f.color_map = hsv2rgb(hsv);
  sleep(10)
end
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Last updated:
Tue Feb 14 15:13:26 CET 2017