third-party/leptonica/prog/findpattern2.c
/*====================================================================*
- 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.
*====================================================================*/
/*
* findpattern2.c
*
* findpattern2
*
* This is setup with input parameters to work on feyn.tif.
*
* It uses pixGenerateSelRandom() to generate the sels.
*
* (1) We extract a "c" bitmap, generate a hit-miss sel, and
* then produce several 4 bpp colormapped renditions,
* with the pattern either removed or highlighted.
*
* (2) We do the same with the word "Caltech".
*/
#include "allheaders.h"
/* for pixDisplayHitMissSel() */
static const l_uint32 HitColor = 0x33aa4400;
static const l_uint32 MissColor = 0xaa44bb00;
int main(int argc,
char **argv)
{
BOX *box;
PIX *pixs, *pixc, *pixp, *pixsel, *pixhmt;
PIX *pixd1, *pixd2, *pixd3;
SEL *selhm;
static char mainName[] = "findpattern2";
if (argc != 1)
return ERROR_INT(" Syntax: findpattern2", mainName, 1);
/* -------------------------------------------- *
* Extract the pattern for a single character *
* ---------------------------------------------*/
pixs = pixRead("feyn.tif");
box = boxCreate(599, 1055, 18, 23);
pixc = pixClipRectangle(pixs, box, NULL);
/* Make a hit-miss sel */
selhm = pixGenerateSelRandom(pixc, 0.3, 0.2, 1, 6, 6, 0, 0, &pixp);
/* Display the sel */
pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
pixDisplay(pixsel, 200, 200);
pixWrite("/tmp/junkpixsel1", pixsel, IFF_PNG);
/* Use the Sel to find all instances in the page */
startTimer();
pixhmt = pixHMT(NULL, pixs, selhm);
fprintf(stderr, "Time to find patterns = %7.3f\n", stopTimer());
/* Color each instance at full res */
pixd1 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
selhm->cy, 0x0000ff00, 1.0, 5);
pixWrite("/tmp/junkpixd11", pixd1, IFF_PNG);
/* Color each instance at 0.3 scale */
pixd2 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
selhm->cy, 0x0000ff00, 0.5, 5);
pixWrite("/tmp/junkpixd12", pixd2, IFF_PNG);
/* Remove each instance from the input image */
pixd3 = pixCopy(NULL, pixs);
pixRemoveMatchedPattern(pixd3, pixp, pixhmt, selhm->cx,
selhm->cy, 1);
pixWrite("/tmp/junkpixr1", pixd3, IFF_PNG);
boxDestroy(&box);
selDestroy(&selhm);
pixDestroy(&pixc);
pixDestroy(&pixp);
pixDestroy(&pixsel);
pixDestroy(&pixhmt);
pixDestroy(&pixd1);
pixDestroy(&pixd2);
pixDestroy(&pixd3);
/* -------------------------------------------- *
* Extract the pattern for a word *
* ---------------------------------------------*/
box = boxCreate(208, 872, 130, 35);
pixc = pixClipRectangle(pixs, box, NULL);
/* Make a hit-miss sel */
selhm = pixGenerateSelRandom(pixc, 1.0, 0.05, 2, 6, 6, 0, 0, &pixp);
/* Display the sel */
pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor);
pixDisplay(pixsel, 200, 200);
pixWrite("/tmp/junkpixsel2", pixsel, IFF_PNG);
/* Use the Sel to find all instances in the page */
startTimer();
pixhmt = pixHMT(NULL, pixs, selhm);
fprintf(stderr, "Time to find word patterns = %7.3f\n", stopTimer());
/* Color each instance at full res */
pixd1 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
selhm->cy, 0x0000ff00, 1.0, 5);
pixWrite("/tmp/junkpixd21", pixd1, IFF_PNG);
/* Color each instance at 0.3 scale */
pixd2 = pixDisplayMatchedPattern(pixs, pixp, pixhmt, selhm->cx,
selhm->cy, 0x0000ff00, 0.5, 5);
pixWrite("/tmp/junkpixd22", pixd2, IFF_PNG);
/* Remove each instance from the input image */
pixd3 = pixCopy(NULL, pixs);
pixRemoveMatchedPattern(pixd3, pixp, pixhmt, selhm->cx,
selhm->cy, 1);
pixWrite("/tmp/junkpixr2", pixd3, IFF_PNG);
selDestroy(&selhm);
boxDestroy(&box);
pixDestroy(&pixc);
pixDestroy(&pixp);
pixDestroy(&pixsel);
pixDestroy(&pixhmt);
pixDestroy(&pixd1);
pixDestroy(&pixd2);
pixDestroy(&pixd3);
pixDestroy(&pixs);
return 0;
}