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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.
*====================================================================*/
/*
* colormask_reg.c
*
* This tests the ability to identify regions in HSV color space
* by analyzing the HS histogram and building masks that cover
* peaks in HS.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "allheaders.h"
int main(int argc,
char **argv)
{
l_int32 i, j, x, y, rval, gval, bval;
l_uint32 pixel1, pixel2;
l_float32 frval, fgval, fbval;
NUMA *nahue, *nasat, *napk;
PIX *pixs, *pixhsv, *pixh, *pixg, *pixf, *pixd, *pixr;
PIX *pix1, *pix2, *pix3;
PIXA *pixa, *pixapk;
PTA *ptapk;
L_REGPARAMS *rp;
#if !defined(HAVE_LIBPNG)
L_ERROR("This test requires libpng to run.\n", "colormask_reg");
exit(77);
#endif
if (regTestSetup(argc, argv, &rp))
return 1;
/* Make a graded frame color */
pixs = pixCreate(650, 900, 32);
for (i = 0; i < 900; i++) {
rval = 40 + i / 30;
for (j = 0; j < 650; j++) {
gval = 255 - j / 30;
bval = 70 + j / 30;
composeRGBPixel(rval, gval, bval, &pixel1);
pixSetPixel(pixs, j, i, pixel1);
}
}
/* Place an image inside the frame and convert to HSV */
pix1 = pixRead("1555.003.jpg");
pix2 = pixScale(pix1, 0.5, 0.5);
pixRasterop(pixs, 100, 100, 2000, 2000, PIX_SRC, pix2, 0, 0);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDisplayWithTitle(pixs, 400, 0, "Input image", rp->display);
pixa = pixaCreate(0);
pixhsv = pixConvertRGBToHSV(NULL, pixs);
/* Work in the HS projection of HSV */
pixh = pixMakeHistoHS(pixhsv, 5, &nahue, &nasat);
pixg = pixMaxDynamicRange(pixh, L_LOG_SCALE);
pixf = pixConvertGrayToFalseColor(pixg, 1.0);
regTestWritePixAndCheck(rp, pixf, IFF_PNG); /* 0 */
pixDisplayWithTitle(pixf, 100, 0, "False color HS histo", rp->display);
pixaAddPix(pixa, pixs, L_COPY);
pixaAddPix(pixa, pixhsv, L_INSERT);
pixaAddPix(pixa, pixg, L_INSERT);
pixaAddPix(pixa, pixf, L_INSERT);
gplotSimple1(nahue, GPLOT_PNG, "/tmp/lept/regout/junkhue",
"Histogram of hue values");
pix3 = pixRead("/tmp/lept/regout/junkhue.png");
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 1 */
pixDisplayWithTitle(pix3, 100, 300, "Histo of hue", rp->display);
pixaAddPix(pixa, pix3, L_INSERT);
gplotSimple1(nasat, GPLOT_PNG, "/tmp/lept/regout/junksat",
"Histogram of saturation values");
pix3 = pixRead("/tmp/lept/regout/junksat.png");
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 2 */
pixDisplayWithTitle(pix3, 100, 800, "Histo of saturation", rp->display);
pixaAddPix(pixa, pix3, L_INSERT);
pixd = pixaDisplayTiledAndScaled(pixa, 32, 270, 7, 0, 30, 3);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 3 */
pixDisplayWithTitle(pixd, 0, 400, "Hue and Saturation Mosaic", rp->display);
pixDestroy(&pixd);
pixaDestroy(&pixa);
numaDestroy(&nahue);
numaDestroy(&nasat);
/* Find all the peaks */
pixFindHistoPeaksHSV(pixh, L_HS_HISTO, 20, 20, 6, 2.0,
&ptapk, &napk, &pixapk);
numaWriteStderr(napk);
ptaWriteStream(stderr, ptapk, 1);
pixd = pixaDisplayTiledInRows(pixapk, 32, 1400, 1.0, 0, 30, 2);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 4 */
pixDisplayWithTitle(pixd, 0, 550, "Peaks in HS", rp->display);
pixDestroy(&pixh);
pixDestroy(&pixd);
pixaDestroy(&pixapk);
/* Make masks for each of the peaks */
pixa = pixaCreate(0);
pixr = pixScaleBySampling(pixs, 0.4, 0.4);
for (i = 0; i < 6; i++) {
ptaGetIPt(ptapk, i, &x, &y);
pix1 = pixMakeRangeMaskHS(pixr, y, 20, x, 20, L_INCLUDE_REGION);
pixaAddPix(pixa, pix1, L_INSERT);
pixGetAverageMaskedRGB(pixr, pix1, 0, 0, 1, L_MEAN_ABSVAL,
&frval, &fgval, &fbval);
composeRGBPixel((l_int32)frval, (l_int32)fgval, (l_int32)fbval,
&pixel1);
pixGetPixelAverage(pixr, pix1, 0, 0, 1, &pixel2);
regTestCompareValues(rp, pixel1 >> 8, pixel2 >> 8, 0.0); /* 5 - 10 */
pix2 = pixCreateTemplate(pixr);
pixSetAll(pix2);
pixPaintThroughMask(pix2, pix1, 0, 0, pixel1);
pixaAddPix(pixa, pix2, L_INSERT);
pix3 = pixCreateTemplate(pixr);
pixSetAllArbitrary(pix3, pixel1);
pixaAddPix(pixa, pix3, L_INSERT);
}
pixd = pixaDisplayTiledAndScaled(pixa, 32, 225, 3, 0, 30, 3);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 8 */
pixDisplayWithTitle(pixd, 600, 0, "Masks over peaks", rp->display);
pixDestroy(&pixs);
pixDestroy(&pixr);
pixDestroy(&pixd);
pixaDestroy(&pixa);
ptaDestroy(&ptapk);
numaDestroy(&napk);
return regTestCleanup(rp);
}
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