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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.
*====================================================================*/
/*
* boxa3_reg.c
*
* Higher-level operations that can search for anomalous-sized boxes
* in a boxa, where the widths and heights of the boxes are expected
* to be similar. These can be corrected by moving the appropriate
* sides of the outlier boxes.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "allheaders.h"
static const char *boxafiles[3] = {"boxap1.ba", "boxap2.ba", "boxap3.ba"};
static l_float32 varp[3] = {0.0165, 0.0432, 0.0716};
static l_float32 varm[3] = {0.0088, 0.0213, 0.0357};
static l_int32 same[3] = {1, -1, -1};
static void TestBoxa(L_REGPARAMS *rp, l_int32 index);
static void PlotBoxa(L_REGPARAMS *rp, l_int32 index);
l_int32 main(int argc,
char **argv)
{
l_int32 i;
L_REGPARAMS *rp;
#if !defined(HAVE_LIBPNG)
L_ERROR("This test requires libpng to run.\n", "boxa3_reg");
exit(77);
#endif
if (regTestSetup(argc, argv, &rp))
return 1;
for (i = 0; i < 3; i++)
TestBoxa(rp, i);
for (i = 0; i < 3; i++)
PlotBoxa(rp, i);
return regTestCleanup(rp);
}
static void
TestBoxa(L_REGPARAMS *rp,
l_int32 index)
{
l_uint8 *data;
l_int32 w, h, medw, medh, isame;
size_t size;
l_float32 scalefact, ratiowh, fvarp, fvarm;
BOXA *boxa1, *boxa2, *boxa3;
PIX *pix1;
boxa1 = boxaRead(boxafiles[index]);
/* Read and display initial boxa */
boxaGetExtent(boxa1, &w, &h, NULL);
scalefact = 100.0 / (l_float32)w;
boxa2 = boxaTransform(boxa1, 0, 0, scalefact, scalefact);
boxaWriteMem(&data, &size, boxa2);
regTestWriteDataAndCheck(rp, data, size, "ba"); /* 0, 13, 26 */
lept_free(data);
pix1 = boxaDisplayTiled(boxa2, NULL, 0, -1, 2200, 2, 1.0, 0, 3, 2);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 1, 14, 27 */
pixDisplayWithTitle(pix1, 0, 0, NULL, rp->display);
pixDestroy(&pix1);
/* Find the median sizes */
boxaMedianDimensions(boxa2, &medw, &medh, NULL, NULL, NULL, NULL,
NULL, NULL);
if (rp->display)
lept_stderr("median width = %d, median height = %d\n", medw, medh);
/* Check for deviations from median by pairs */
boxaSizeConsistency(boxa2, L_CHECK_HEIGHT, 0.0, 0.0,
&fvarp, &fvarm, &isame);
regTestCompareValues(rp, varp[index], fvarp, 0.003); /* 2, 15, 28 */
regTestCompareValues(rp, varm[index], fvarm, 0.003); /* 3, 16, 29 */
regTestCompareValues(rp, same[index], isame, 0); /* 4, 17, 30 */
if (rp->display)
lept_stderr("fvarp = %7.4f, fvarm = %7.4f, same = %d\n",
fvarp, fvarm, isame);
/* Reconcile widths */
boxa3 = boxaReconcileSizeByMedian(boxa2, L_CHECK_WIDTH, 0.05, 0.04, 1.03,
NULL, NULL, &ratiowh);
boxaWriteMem(&data, &size, boxa3);
regTestWriteDataAndCheck(rp, data, size, "ba"); /* 5, 18, 31 */
lept_free(data);
pix1 = boxaDisplayTiled(boxa3, NULL, 0, -1, 2200, 2, 1.0, 0, 3, 2);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 6, 19, 32 */
pixDisplayWithTitle(pix1, 500, 0, NULL, rp->display);
if (rp->display)
lept_stderr("ratio median width/height = %6.3f\n", ratiowh);
boxaDestroy(&boxa3);
pixDestroy(&pix1);
/* Reconcile heights */
boxa3 = boxaReconcileSizeByMedian(boxa2, L_CHECK_HEIGHT, 0.05, 0.04, 1.03,
NULL, NULL, NULL);
boxaWriteMem(&data, &size, boxa3);
regTestWriteDataAndCheck(rp, data, size, "ba"); /* 7, 20, 33 */
lept_free(data);
pix1 = boxaDisplayTiled(boxa3, NULL, 0, -1, 2200, 2, 1.0, 0, 3, 2);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 8, 21, 34 */
pixDisplayWithTitle(pix1, 1000, 0, NULL, rp->display);
boxaDestroy(&boxa3);
pixDestroy(&pix1);
/* Reconcile both widths and heights */
boxa3 = boxaReconcileSizeByMedian(boxa2, L_CHECK_BOTH, 0.05, 0.04, 1.03,
NULL, NULL, NULL);
boxaWriteMem(&data, &size, boxa3);
regTestWriteDataAndCheck(rp, data, size, "ba"); /* 9, 22, 35 */
lept_free(data);
pix1 = boxaDisplayTiled(boxa3, NULL, 0, -1, 2200, 2, 1.0, 0, 3, 2);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 10, 23, 36 */
pixDisplayWithTitle(pix1, 1500, 0, NULL, rp->display);
boxaDestroy(&boxa3);
pixDestroy(&pix1);
boxaDestroy(&boxa1);
boxaDestroy(&boxa2);
boxaDestroy(&boxa3);
}
static void
PlotBoxa(L_REGPARAMS *rp,
l_int32 index)
{
BOXA *boxa1, *boxa2;
PIX *pix1, *pix2, *pix3;
PIXA *pixa;
boxa1 = boxaRead(boxafiles[index]);
/* Read and display initial boxa */
boxaPlotSizes(boxa1, NULL, NULL, NULL, &pix1);
boxaPlotSides(boxa1, NULL, NULL, NULL, NULL, NULL, &pix2);
pixa = pixaCreate(2);
pixaAddPix(pixa, pix1, L_INSERT);
pixaAddPix(pixa, pix2, L_INSERT);
pix3 = pixaDisplayTiledInColumns(pixa, 2, 1.0, 20, 2);
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 39, 41, 43 */
pixDisplayWithTitle(pix3, 0 + 800 * index, 500, NULL, rp->display);
pixDestroy(&pix3);
pixaDestroy(&pixa);
/* Read and display reconciled boxa */
boxa2 = boxaReconcileSizeByMedian(boxa1, L_CHECK_BOTH, 0.05, 0.04, 1.03,
NULL, NULL, NULL);
boxaPlotSizes(boxa2, NULL, NULL, NULL, &pix1);
boxaPlotSides(boxa2, NULL, NULL, NULL, NULL, NULL, &pix2);
pixa = pixaCreate(2);
pixaAddPix(pixa, pix1, L_INSERT);
pixaAddPix(pixa, pix2, L_INSERT);
pix3 = pixaDisplayTiledInColumns(pixa, 2, 1.0, 20, 2);
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 40, 42, 44 */
pixDisplayWithTitle(pix3, 0 + 800 * index, 920, NULL, rp->display);
pixDestroy(&pix3);
pixaDestroy(&pixa);
boxaDestroy(&boxa1);
boxaDestroy(&boxa2);
}
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