## NAME

         gray_quant_segment - remaps to desired number of gray levels

## SYNOPSIS

          #include <CVIPimage.h>
          #include <CVIPmatrix.h>
          #include "CVIPsegment.h"

         Image * gray_quant_segment(Image *cvipImage, int num_bits)

          <cvipImage> - pointer to an Image structure
          <num_bits> - number of gray levels desired (2,4,8,...128)

## PATH

         $CVIPHOME/SEGMENTATION/gray_quant.c

## DESCRIPTION

         This  function  remaps  (quantizes)  an  image  to  a  user-
         specified  number  of gray levels. The number of gray levels
         used must be a power of 2, to a maximum of 128 levels.

## TYPES AND CONSTANTS

## RETURN VALUES

         A quantized image on success, and NULL pointer on failure

## HISTORY

         History information recorded: None

## EXAMPLE

          #include <CVIPtoolkit.h>
          #include <CVIPimage.h>
          #include <CVIPdef.h>
          #include <CVIPconvert.h>
          #include <CVIPview.h>
          #define VIEWER "picture"
          #define VIDEO_APP "SunVideo &"

          void main()
          {
          Image *cvipImage;
          IMAGE_FORMAT format;
          char *inputfile,*outputfile;

          setDisplay_Image(VIEWER, "Default");

          print_CVIP("\n\t\tEnter the  Input File Name:  ");
          inputfile =(char *) getString_CVIP();
          format = getFormat_CVIP(inputfile);
          cvipImage = read_Image(inputfile,1);
          view_Image(cvipImage, inputfile);
          free(inputfile);
          /* the following call remaps the desired number of
          gray levels to 2 */
          cvipImage = (Image *)gray_quant_segment(cvipImage,2);
          print_CVIP("\n\t\tEnter the Output File Name:  ");
          outputfile = getString_CVIP();
          view_Image(cvipImage,outputfile);
          write_Image(cvipImage,outputfile,CVIP_NO,CVIP_NO,
          format,1);
          free(outputfile);
          }

## SEE ALSO

         libsegment

## AUTHOR

         Copyright (C) 1996 SIUE - by Scott E. Umbaugh and Kun Luo.