Listing 4 Code implementing manual segmentation

   /**************************************************
   *   manual_threshold_segmentation(...
   *   This function segments an image using thresholding
   *   given the hi and low values of the threshold
   *   by the calling routine. It reads in an image
   *   and writes the result to the output image.
   *   If the segment parameter is 0, you only
   *   threshold the array - you do not segment.
   ***************************************************/

manual_threshold_segmentation(in_name, out_name,
                              the_image, out_image,
                              il, ie, ll, le,
                              hi, low, value, segment)
   char    in_name[], out_name[];
   int     il, ie, ll, le, segment;
   short  hi, low, the_image[ROWS][COLS],
          out_image[ROWS][COLS], value;
{
   int     length, width;
   struct tiff_header_struct image_header;
   
   if(does_not_exist(out_name)){
      printf("\n\nMTS> output file does not exist %s", out_name);
      read_tiff_header(in_name, &image_header);
      round_off_image_size(&image_header, &length, &width);
      image_header.image_length = length*ROWS;
      image_header.image_width  = width*COLS;
      create_allocate_tiff_file(out_name, &image_header, out_image);
   }  /* ends if does_not_exist */
   
   read_tiff_image(in_name, the_image, il, ie, ll, le);
   threshold_image_array(the_image, out_image, hi, low, value);
   if(segment == 1)
      grow(out_image, value);
   write_array_into_tiff_image(out_name, out_image, il, ie, ll, le);
}  /* ends manual_threshold_segmentation */

/* End of File */