Name

hsv2rgb — Converts HSV colors to RGB

Calling Sequence

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

Parameters

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] tripple.

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] tripple.

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();f.pixmap='on';
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);
  show_pixmap()
  xpause(10000)
end
for v=0:0.1:1
  hsv=[ones(32,1) linspace(0,1,32)' v*ones(32,1)];
  f.color_map=hsv2rgb(hsv);
  show_pixmap()
  xpause(10000)
end

Authors

Serge Steer

INRIA