## 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.