1 /*****************************************************************************
2 ** This is part of the CTSim program
3 ** Copyright (C) 1983-2000 Kevin Rosenberg
5 ** $Id: sdf-2.c,v 1.1 2000/04/28 13:02:44 kevin Exp $
7 ** Revision 1.1 2000/04/28 13:02:44 kevin
11 ** This program is free software; you can redistribute it and/or modify
12 ** it under the terms of the GNU General Public License (version 2) as
13 ** published by the Free Software Foundation.
15 ** This program is distributed in the hope that it will be useful,
16 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ** GNU General Public License for more details.
20 ** You should have received a copy of the GNU General Public License
21 ** along with this program; if not, write to the Free Software
22 ** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 ******************************************************************************/
25 * sdf-2.c Generate a SDF file from two input SDF files
38 static struct option my_options[] =
43 {"comp", 0, 0, O_COMP},
44 {"verbose", 0, 0, O_VERBOSE},
45 {"help", 0, 0, O_HELP},
46 {"version", 0, 0, O_VERSION},
51 usage (const char *program)
53 fprintf(stdout, "usage: %s infile1 infile2 outfile [OPTIONS]\n", kbasename(program));
54 fprintf(stdout, "Generate an SDF2D file from two input SDF2D files\n");
55 fprintf(stdout, "\n");
56 fprintf(stdout, " infile1 Name of first input SDF file\n");
57 fprintf(stdout, " infile2 Name of second input SDF file\n");
58 fprintf(stdout, " outfile Name of output SDF file\n");
59 fprintf(stdout, " --add Add images\n");
60 fprintf(stdout, " --sub Subtract image 2 from image 1\n");
61 fprintf(stdout, " --mul Multiply images\n");
62 fprintf(stdout, " --comp Compare images\n");
63 fprintf(stdout, " --verbose Verbose modem\n");
64 fprintf(stdout," --version Print version\n");
65 fprintf(stdout, " --help Print this help message\n");
70 main (int argc, char *const argv[])
86 int c = getopt_long (argc, argv, "", my_options, NULL);
110 fprintf(stdout, "Version %s\n", VERSION);
112 fprintf(stderr, "Unknown version number");
125 if (optind + 3 != argc)
131 in_file1 = argv[optind];
132 in_file2 = argv[optind + 1];
133 out_file = argv[optind + 2];
135 im_in1 = image_load (in_file1);
136 im_in2 = image_load (in_file2);
137 if (im_in1->nx != im_in2->nx || im_in1->ny != im_in2->ny) {
138 fprintf(stderr, "Size of image 1 (%d,%d) and image 2 (%d,%d) do not match\n",
139 im_in1->nx, im_in1->ny, im_in2->nx, im_in2->ny);
142 im_out = image_create (out_file, im_in1->nx, im_in1->ny);
146 for (ix = 0; ix < im_in1->nx; ix++)
148 IMAGE_ELEM_VAL *in1 = &im_in1->v[ix][0];
149 IMAGE_ELEM_VAL *in2 = &im_in2->v[ix][0];
150 IMAGE_ELEM_VAL *out = &im_out->v[ix][0];
151 for (iy = 0; iy < im_in1->ny; iy++)
152 *out++ = *in1++ + *in2++;
154 } else if (opt_sub) {
156 for (ix = 0; ix < im_in1->nx; ix++)
158 IMAGE_ELEM_VAL *in1 = &im_in1->v[ix][0];
159 IMAGE_ELEM_VAL *in2 = &im_in2->v[ix][0];
160 IMAGE_ELEM_VAL *out = &im_out->v[ix][0];
161 for (iy = 0; iy < im_in1->ny; iy++)
162 *out++ = *in1++ - *in2++;
164 } else if (opt_mul) {
166 for (ix = 0; ix < im_in1->nx; ix++)
168 IMAGE_ELEM_VAL *in1 = &im_in1->v[ix][0];
169 IMAGE_ELEM_VAL *in2 = &im_in2->v[ix][0];
170 IMAGE_ELEM_VAL *out = &im_out->v[ix][0];
171 for (iy = 0; iy < im_in1->ny; iy++)
172 *out++ = *in1++ * *in2++;
174 } else if (opt_comp) {
176 double abs_error = 0.;
177 for (ix = 0; ix < im_in1->nx; ix++)
179 IMAGE_ELEM_VAL *in1 = &im_in1->v[ix][0];
180 IMAGE_ELEM_VAL *in2 = &im_in2->v[ix][0];
181 IMAGE_ELEM_VAL *out = &im_out->v[ix][0];
182 for (iy = 0; iy < im_in1->ny; iy++)
184 double diff = *in1++ - *in2++;
186 abs_error += fabs(diff);
189 abs_error /= (im_in1->nx * im_in1->ny);
190 fprintf(stdout, "Average Error = %f\n", abs_error);