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.