        case 8:  /* perform edge detection */
           printf("\nCIPS>> Enter input image name\n");
           get_image_name(name);
           printf("\nCIPS>> Enter output image name\n");
           get_image_name(name2);
           get_parameters(&il, &ie, &ll, &le);
           get_edge_options(&detect_type, &detect_threshold,
                            &high, &size);
           if(detect_type == 1  ||
              detect_type == 2  ||
              detect_type == 3)
              detect_edges(name, name2, the_image, out_image,
                           il, ie, ll, le, detect_type,
                           detect_threshold, high);
           if(detect_type == 4)
              quick_edge(name, name2, the_image, out_image,
                         il, ie, ll, le, detect_threshold,
                         high);
           if(detect_type == 5)
                homogeneity(name, name2, the_image, out_image,
                         il, ie, ll, le, detect_threshold,
                         high);
           if(detect_type == 6)
                difference_edge(name, name2, the_image, out_image,
                              il, ie, ll, le, detect_threshold,
                              high);
           if(detect_type == 7)
                contrast_edge(name, name2, the_image, out_image,
                            il, ie, ll, le, detect_threshold,
                            high);
           if(detect_type == 8)
                gaussian_edge(name, name2, the_image, out_image,
                             il, ie, ll, le, size, 
                            detect_threshold, high);
         break;

        case 9:  /* edge enhancement */
           printf("\nCIPS>> Enter input image name\n");
           get_image_name(name);
           printf("\nCIPS>> Enter output image name\n");
           get_image_name(name2);
           get_parameters(&il, &ie, &ll, &le);
           printf("\nCIPS>> Enter high threshold parameter");
           printf(" \n\t___\b\b\b");
           get_integer(&high);
           enhance_edges(name, name2, the_image, out_image,
                  il, ie, ll, le, high);
         break;

.
.
.

   /******************************************************
   *
   *   show_menu(..
   *

   *   This function displays the CIPS main menu.
   *
   *******************************************************/
show_menu()
{

        printf("\n\n\nWelcome to CIPS");
        printf("\nThe C Image Processing System");
        printf("\nThese are you choices:\n");
        printf("\n\t1.  Display image header");
        printf("\n\t2.  Show image numbers");
        printf("\n\t3.  Print image numbers");
        printf("\n\t4.  Display image (VGA & EGA only)");
        printf("\n\t5.  Display or print image using halftoning");
        printf("\n\t6.  Print graphics image using dithering");
        printf("\n\t7.  Print or display histogram numbers");
        printf("\n\t8.  Perform edge detection");
        printf("\n\t9.  Perform edge enhancement");
        printf("\n\t20. Exit system");
        printf("\n\nEnter choice _\b");

}    /* ends show_menu */

/* End of File */ 

