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/* dt - dt.cpp
*
* Copyright (C) 2006 Pedro Felzenszwalb
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include "pnmfile.h"
#include "imconv.h"
#include "dt.h"
int main(int argc, char **argv) {
if (argc != 3) {
fprintf(stderr, "usage: %s input(pbm) output(pgm)\n", argv[0]);
return 1;
}
char *input_name = argv[1];
char *output_name = argv[2];
// load input
image<uchar> *input = loadPBM(input_name);
// compute dt
image<float> *out = dt(input);
// take square roots
for (int y = 0; y < out->height(); y++) {
for (int x = 0; x < out->width(); x++) {
imRef(out, x, y) = sqrt(imRef(out, x, y));
}
}
// convert to grayscale
image<uchar> *gray = imageFLOATtoUCHAR(out);
// save output
savePGM(gray, output_name);
delete input;
delete out;
delete gray;
}
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