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/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- 1. Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials
- provided with the distribution.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANY
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*====================================================================*/
/*
* livre_hmt.c
*
* This demonstrates use of pixGenerateSelBoundary() to
* generate a hit-miss Sel.
*
* (1) The Sel is displayed with the hit and miss elements in color.
*
* (2) We produce several 4 bpp colormapped renditions,
* with the matched pattern either highlighted or removed.
*
* (3) For figures in the Document Image Applications chapter:
* fig 7: livre_hmt 1 8
* fig 8: livre_hmt 2 4
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "allheaders.h"
/* for pixDisplayHitMissSel() */
static const l_uint32 HitColor = 0x33aa4400;
static const l_uint32 MissColor = 0xaa44bb00;
/* Patterns at full resolution */
static const char *patname[3] = {
"",
"tribune-word.png", /* patno = 1 */
"tribune-t.png"}; /* patno = 2 */
int main(int argc,
char **argv)
{
l_int32 patno, reduction, width, cols, cx, cy;
PIX *pixs, *pixt, *pix, *pixr, *pixp, *pixsel, *pixhmt;
PIX *pixd1, *pixd2, *pixd3, *pixd;
PIXA *pixa;
SEL *selhm;
static char mainName[] = "livre_hmt";
if (argc != 3)
return ERROR_INT(" Syntax: livre_hmt pattern reduction", mainName, 1);
patno = atoi(argv[1]);
reduction = atoi(argv[2]);
setLeptDebugOK(1);
lept_mkdir("lept/livre");
if ((pixs = pixRead(patname[patno])) == NULL)
return ERROR_INT("pixs not made", mainName, 1);
if (reduction != 4 && reduction != 8 && reduction != 16)
return ERROR_INT("reduction not 4, 8 or 16", mainName, 1);
if (reduction == 4)
pixt = pixReduceRankBinaryCascade(pixs, 4, 4, 0, 0);
else if (reduction == 8)
pixt = pixReduceRankBinaryCascade(pixs, 4, 4, 2, 0);
else /* reduction == 16 */
pixt = pixReduceRankBinaryCascade(pixs, 4, 4, 2, 2);
/* Make a hit-miss sel */
if (reduction == 4)
selhm = pixGenerateSelBoundary(pixt, 2, 2, 20, 30, 1, 1, 0, 0, &pixp);
else if (reduction == 8)
selhm = pixGenerateSelBoundary(pixt, 1, 2, 6, 12, 1, 1, 0, 0, &pixp);
else /* reduction == 16 */
selhm = pixGenerateSelBoundary(pixt, 1, 1, 4, 8, 0, 0, 0, 0, &pixp);
/* Display the sel */
pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
pixDisplay(pixsel, 1000, 300);
pixWrite("/tmp/lept/livre/pixsel1", pixsel, IFF_PNG);
/* Use the Sel to find all instances in the page */
pix = pixRead("tribune-page-4x.png"); /* 4x reduced */
if (reduction == 4)
pixr = pixClone(pix);
else if (reduction == 8)
pixr = pixReduceRankBinaryCascade(pix, 2, 0, 0, 0);
else /* reduction == 16 */
pixr = pixReduceRankBinaryCascade(pix, 2, 2, 0, 0);
startTimer();
pixhmt = pixHMT(NULL, pixr, selhm);
lept_stderr("Time to find patterns = %7.3f\n", stopTimer());
/* Color each instance at full res */
selGetParameters(selhm, NULL, NULL, &cy, &cx);
pixd1 = pixDisplayMatchedPattern(pixr, pixp, pixhmt,
cx, cy, 0x0000ff00, 1.0, 5);
pixWrite("/tmp/lept/livre/pixd11", pixd1, IFF_PNG);
/* Color each instance at 0.5 scale */
pixd2 = pixDisplayMatchedPattern(pixr, pixp, pixhmt,
cx, cy, 0x0000ff00, 0.5, 5);
pixWrite("/tmp/lept/livre/pixd12", pixd2, IFF_PNG);
/* Remove each instance from the input image */
pixd3 = pixCopy(NULL, pixr);
pixRemoveMatchedPattern(pixd3, pixp, pixhmt, cx, cy, 1);
pixWrite("/tmp/lept/livre/pixr1", pixd3, IFF_PNG);
pixa = pixaCreate(2);
pixaAddPix(pixa, pixs, L_CLONE);
pixaAddPix(pixa, pixsel, L_CLONE);
cols = (patno == 1) ? 1 : 2;
width = (patno == 1) ? 800 : 400;
pixd = pixaDisplayTiledAndScaled(pixa, 32, width, cols, 0, 30, 2);
pixWrite("/tmp/lept/livre/hmt.png", pixd, IFF_PNG);
pixDisplay(pixd, 1000, 600);
selDestroy(&selhm);
pixDestroy(&pixp);
pixDestroy(&pixsel);
pixDestroy(&pixhmt);
pixDestroy(&pixd1);
pixDestroy(&pixd2);
pixDestroy(&pixd3);
pixDestroy(&pixs);
pixDestroy(&pix);
pixDestroy(&pixt);
return 0;
}
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