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Diffstat (limited to 'leptonica/prog/pixa1_reg.c')
| -rw-r--r-- | leptonica/prog/pixa1_reg.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/leptonica/prog/pixa1_reg.c b/leptonica/prog/pixa1_reg.c new file mode 100644 index 00000000..5de883b3 --- /dev/null +++ b/leptonica/prog/pixa1_reg.c @@ -0,0 +1,170 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * pixa1_reg.c + * + * Tests removal of connected components. + */ + +#ifdef HAVE_CONFIG_H +#include <config_auto.h> +#endif /* HAVE_CONFIG_H */ + +#include "allheaders.h" + +static const l_int32 CONNECTIVITY = 8; + +int main(int argc, + char **argv) +{ +l_int32 size, i, n, n0; +BOXA *boxa; +GPLOT *gplot; +NUMA *nax, *nay1, *nay2; +PIX *pixs, *pix1, *pixd; +PIXA *pixa; +L_REGPARAMS *rp; + + if (regTestSetup(argc, argv, &rp)) + return 1; + + pixs = pixRead("feyn-fract.tif"); + lept_mkdir("lept/pixa"); + pixa = pixaCreate(2); + + /* ---------------- Remove small components --------------- */ + boxa = pixConnComp(pixs, NULL, 8); + n0 = boxaGetCount(boxa); + nax = numaMakeSequence(0, 2, 51); + nay1 = numaCreate(51); + nay2 = numaCreate(51); + boxaDestroy(&boxa); + + if (rp->display) { + lept_stderr("\n Select Large if Both\n"); + lept_stderr("Iter 0: n = %d\n", n0); + } + numaAddNumber(nay1, n0); + for (i = 1; i <= 50; i++) { + size = 2 * i; + pixd = pixSelectBySize(pixs, size, size, CONNECTIVITY, + L_SELECT_IF_BOTH, L_SELECT_IF_GTE, NULL); + boxa = pixConnComp(pixd, NULL, 8); + n = boxaGetCount(boxa); + numaAddNumber(nay1, n); + if (rp->display) lept_stderr("Iter %d: n = %d\n", i, n); + boxaDestroy(&boxa); + pixDestroy(&pixd); + } + + if (rp->display) { + lept_stderr("\n Select Large if Either\n"); + lept_stderr("Iter 0: n = %d\n", n0); + } + numaAddNumber(nay2, n0); + for (i = 1; i <= 50; i++) { + size = 2 * i; + pixd = pixSelectBySize(pixs, size, size, CONNECTIVITY, + L_SELECT_IF_EITHER, L_SELECT_IF_GTE, NULL); + boxa = pixConnComp(pixd, NULL, 8); + n = boxaGetCount(boxa); + numaAddNumber(nay2, n); + if (rp->display) lept_stderr("Iter %d: n = %d\n", i, n); + boxaDestroy(&boxa); + pixDestroy(&pixd); + } + + gplot = gplotCreate("/tmp/lept/pixa/root1", GPLOT_PNG, + "Select large: number of cc vs size removed", + "min size", "number of c.c."); + gplotAddPlot(gplot, nax, nay1, GPLOT_LINES, "select if both"); + gplotAddPlot(gplot, nax, nay2, GPLOT_LINES, "select if either"); + pix1 = gplotMakeOutputPix(gplot); + regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 0 */ + pixaAddPix(pixa, pix1, L_INSERT); + gplotDestroy(&gplot); + + /* ---------------- Remove large components --------------- */ + numaEmpty(nay1); + numaEmpty(nay2); + + if (rp->display) { + lept_stderr("\n Select Small if Both\n"); + lept_stderr("Iter 0: n = %d\n", 0); + } + numaAddNumber(nay1, 0); + for (i = 1; i <= 50; i++) { + size = 2 * i; + pixd = pixSelectBySize(pixs, size, size, CONNECTIVITY, + L_SELECT_IF_BOTH, L_SELECT_IF_LTE, NULL); + boxa = pixConnComp(pixd, NULL, 8); + n = boxaGetCount(boxa); + numaAddNumber(nay1, n); + if (rp->display) lept_stderr("Iter %d: n = %d\n", i, n); + boxaDestroy(&boxa); + pixDestroy(&pixd); + } + + if (rp->display) { + lept_stderr("\n Select Small if Either\n"); + lept_stderr("Iter 0: n = %d\n", 0); + } + numaAddNumber(nay2, 0); + for (i = 1; i <= 50; i++) { + size = 2 * i; + pixd = pixSelectBySize(pixs, size, size, CONNECTIVITY, + L_SELECT_IF_EITHER, L_SELECT_IF_LTE, NULL); + boxa = pixConnComp(pixd, NULL, 8); + n = boxaGetCount(boxa); + numaAddNumber(nay2, n); + if (rp->display) lept_stderr("Iter %d: n = %d\n", i, n); + boxaDestroy(&boxa); + pixDestroy(&pixd); + } + + gplot = gplotCreate("/tmp/lept/pixa/root2", GPLOT_PNG, + "Remove large: number of cc vs size removed", + "min size", "number of c.c."); + gplotAddPlot(gplot, nax, nay1, GPLOT_LINES, "select if both"); + gplotAddPlot(gplot, nax, nay2, GPLOT_LINES, "select if either"); + pix1 = gplotMakeOutputPix(gplot); + regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 1 */ + pixaAddPix(pixa, pix1, L_INSERT); + gplotDestroy(&gplot); + + pixd = pixaDisplayTiledInRows(pixa, 32, 1500, 1.0, 0, 20, 2); + pixDisplayWithTitle(pixd, 100, 0, NULL, rp->display); + pixWrite("/tmp/lept/pixa/root.png", pixd, IFF_PNG); + pixDestroy(&pixd); + pixaDestroy(&pixa); + + numaDestroy(&nax); + numaDestroy(&nay1); + numaDestroy(&nay2); + pixDestroy(&pixs); + return regTestCleanup(rp); +} |