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Diffstat (limited to 'leptonica/prog/findpattern3.c')
| -rw-r--r-- | leptonica/prog/findpattern3.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/leptonica/prog/findpattern3.c b/leptonica/prog/findpattern3.c new file mode 100644 index 00000000..cc641cfe --- /dev/null +++ b/leptonica/prog/findpattern3.c @@ -0,0 +1,160 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * findpattern3.c + * + * We use pixGenerateSelBoundary() to generate the sels. + * + * This is set up with input parameters to work on feyn.tif. + * + * (1) We extract an "e" 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". + */ + +#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; + +int main(int argc, + char **argv) +{ +BOX *box; +PIX *pixs, *pixc, *pixp, *pixsel, *pixhmt; +PIX *pixd1, *pixd2, *pixd3; +SEL *selhm; +static char mainName[] = "findpattern3"; + + if (argc != 1) + return ERROR_INT(" Syntax: findpattern3", mainName, 1); + + setLeptDebugOK(1); + lept_mkdir("lept/hmt"); + + /* -------------------------------------------- * + * 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 = pixGenerateSelBoundary(pixc, 1, 2, 2, 2, 1, 1, 0, 0, &pixp); + + /* Display the sel */ + pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor); + pixDisplay(pixsel, 200, 200); + pixWrite("/tmp/lept/hmt/pixsel1.png", pixsel, IFF_PNG); + + /* Use the Sel to find all instances in the page */ + startTimer(); + pixhmt = pixHMT(NULL, pixs, selhm); + lept_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/lept/hmt/pixd11.png", 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/lept/hmt/pixd12.png", 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/lept/hmt/pixr1.png", 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 = pixGenerateSelBoundary(pixc, 2, 2, 1, 4, 1, 1, 0, 0, &pixp); + + /* Display the sel */ + pixsel = pixDisplayHitMissSel(pixp, selhm, 7, HitColor, MissColor); + pixDisplay(pixsel, 200, 200); + pixWrite("/tmp/lept/hmt/pixsel2.png", pixsel, IFF_PNG); + + /* Use the Sel to find all instances in the page */ + startTimer(); + pixhmt = pixHMT(NULL, pixs, selhm); + lept_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/lept/hmt/pixd21.png", 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/lept/hmt/pixd22.png", 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/lept/hmt/pixr2.png", 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; +} + |