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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.
*====================================================================*/
/*
* pixa_reg.c
*
* tests removal of components
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
static const l_int32 CONNECTIVITY = 8;
main(int argc,
char **argv)
{
l_int32 size, i, n, n0;
BOXA *boxa;
GPLOT *gplot;
NUMA *nax, *nay1, *nay2;
PIX *pixs, *pixd;
static char mainName[] = "pixa_reg";
if (argc != 1)
exit(ERROR_INT(" Syntax: pixa_reg", mainName, 1));
if ((pixs = pixRead("feyn.tif")) == NULL)
exit(ERROR_INT("pixs not made", mainName, 1));
/* ---------------- Remove small components --------------- */
boxa = pixConnComp(pixs, NULL, 8);
n0 = boxaGetCount(boxa);
nax = numaMakeSequence(0, 2, 51);
nay1 = numaCreate(51);
nay2 = numaCreate(51);
boxaDestroy(&boxa);
fprintf(stderr, "\n Select Large if Both\n");
fprintf(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);
fprintf(stderr, "Iter %d: n = %d\n", i, n);
boxaDestroy(&boxa);
pixDestroy(&pixd);
}
fprintf(stderr, "\n Select Large if Either\n");
fprintf(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);
fprintf(stderr, "Iter %d: n = %d\n", i, n);
boxaDestroy(&boxa);
pixDestroy(&pixd);
}
gplot = gplotCreate("junkplot1", GPLOT_X11,
"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");
gplotMakeOutput(gplot);
gplotDestroy(&gplot);
/* ---------------- Remove large components --------------- */
numaEmpty(nay1);
numaEmpty(nay2);
fprintf(stderr, "\n Select Small if Both\n");
fprintf(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);
fprintf(stderr, "Iter %d: n = %d\n", i, n);
boxaDestroy(&boxa);
pixDestroy(&pixd);
}
fprintf(stderr, "\n Select Small if Either\n");
fprintf(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);
fprintf(stderr, "Iter %d: n = %d\n", i, n);
boxaDestroy(&boxa);
pixDestroy(&pixd);
}
gplot = gplotCreate("junkplot2", GPLOT_X11,
"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");
gplotMakeOutput(gplot);
gplotDestroy(&gplot);
numaDestroy(&nax);
numaDestroy(&nay1);
numaDestroy(&nay2);
pixDestroy(&pixs);
exit(0);
}
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