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/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* bincompare.c
*
* Bitwise comparison of two binary images
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
/* set one of these to 1 */
#define XOR 0
#define SUBTRACT_1_FROM_2 0
#define SUBTRACT_2_FROM_1 1
main(int argc,
char **argv)
{
l_int32 w, h, d, n;
char *filein1, *filein2, *fileout;
PIX *pixs1, *pixs2, *pixd;
static char mainName[] = "bincompare";
if (argc != 4)
exit(ERROR_INT(" Syntax: bincompare filein1 filein2 fileout",
mainName, 1));
filein1 = argv[1];
filein2 = argv[2];
fileout = argv[3];
if ((pixs1 = pixRead(filein1)) == NULL)
exit(ERROR_INT("pixs1 not made", mainName, 1));
if ((pixs2 = pixRead(filein2)) == NULL)
exit(ERROR_INT("pixs2 not made", mainName, 1));
w = pixGetWidth(pixs1);
h = pixGetHeight(pixs1);
d = pixGetDepth(pixs1);
if (d != 1)
exit(ERROR_INT("pixs1 not binary", mainName, 1));
pixCountPixels(pixs1, &n, NULL);
fprintf(stderr, "Number of fg pixels in file1 = %d\n", n);
pixCountPixels(pixs2, &n, NULL);
fprintf(stderr, "Number of fg pixels in file2 = %d\n", n);
#if XOR
fprintf(stderr, "xor: 1 ^ 2\n");
pixRasterop(pixs1, 0, 0, w, h, PIX_SRC ^ PIX_DST, pixs2, 0, 0);
pixCountPixels(pixs1, &n, NULL);
fprintf(stderr, "Number of fg pixels in XOR = %d\n", n);
pixWrite(fileout, pixs1, IFF_PNG);
#elif SUBTRACT_1_FROM_2
fprintf(stderr, "subtract: 2 - 1\n");
pixRasterop(pixs1, 0, 0, w, h, PIX_SRC & PIX_NOT(PIX_DST), pixs2, 0, 0);
pixCountPixels(pixs1, &n, NULL);
fprintf(stderr, "Number of fg pixels in 2 - 1 = %d\n", n);
pixWrite(fileout, pixs1, IFF_PNG);
#elif SUBTRACT_2_FROM_1
fprintf(stderr, "subtract: 1 - 2\n");
pixRasterop(pixs1, 0, 0, w, h, PIX_DST & PIX_NOT(PIX_SRC), pixs2, 0, 0);
pixCountPixels(pixs1, &n, NULL);
fprintf(stderr, "Number of fg pixels in 1 - 2 = %d\n", n);
pixWrite(fileout, pixs1, IFF_PNG);
#else
fprintf(stderr, "no comparison selected\n");
#endif
exit(0);
}
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