NAME
Luv_inv_xform - L*u*v* inverse transform
SYNOPSIS
void Luv_inv_xform(float **cvecP, unsigned long vdim, float
Xo, float Yo, float Zo)
<cvecP> - pointer to an array of normalized band vectors
<vdim> - dimension of each vector (number of pixels)
<Xo> - reference white for red
<Yo> - reference white for green
<Zo> - reference white for blue
PATH
$CVIPHOME/COLOR/cxform.c
DESCRIPTION
This function performs LUV to RGB color transformation
according to the following equations:
For Y(g):
when L > 8.0, L = 116*pow((Y/Yn), 1/3) - 16;
when L <= 8.0, Lm = 903.3 * (Y/Yn).
For X(r) and Z(b):
X = (Y*(9*u'))/(4*v')
Z = (3*Y)/v' - X/3 - 5*Y
TYPES AND CONSTANTS
None
RETURN VALUES
None
HISTORY
History information recorded: None
SEE ALSO
libcolor
AUTHOR
Copyright (C) 1996 SIUE - by Scott E. Umbaugh and Wenxing
Li.