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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.
*====================================================================*/
/*
* cmapquant_reg.c
*
* Tests quantization of rgb image to a specific colormap.
* Does this by starting with a grayscale image, doing a grayscale
* quantization with a colormap in the dest, then adding new
* colors, scaling (which removes the colormap), and finally
* re-quantizing back to the original colormap.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include "allheaders.h"
#define LEVEL 3
#define MIN_DEPTH 4
int main(int argc,
char **argv)
{
BOX *box;
PIX *pixs, *pix1, *pix2, *pix3, *pix4, *pix5, *pix6, *pix7;
PIX *pix8, *pix9;
PIXCMAP *cmap;
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
pixs = pixRead("lucasta-frag.jpg");
/* Convert to 4 bpp with 6 levels and a colormap */
pix1 = pixThresholdTo4bpp(pixs, 6, 1);
/* Color some non-white pixels, preserving antialiasing, and
* adding these colors to the colormap */
box = boxCreate(120, 30, 200, 200);
pixColorGray(pix1, box, L_PAINT_DARK, 220, 0, 0, 255);
regTestWritePixAndCheck(rp, pix1, IFF_PNG); /* 0 */
pixDisplayWithTitle(pix1, 0, 0, NULL, rp->display);
boxDestroy(&box);
/* Scale up by 1.5; losing the colormap */
pix2 = pixScale(pix1, 1.5, 1.5);
regTestWritePixAndCheck(rp, pix2, IFF_JFIF_JPEG); /* 1 */
pixDisplayWithTitle(pix2, 0, 0, NULL, rp->display);
/* Octcube quantize using the same colormap */
startTimer();
cmap = pixGetColormap(pix1);
pix3 = pixOctcubeQuantFromCmap(pix2, cmap, MIN_DEPTH,
LEVEL, L_EUCLIDEAN_DISTANCE);
lept_stderr("Time to re-quantize to cmap = %7.3f sec\n", stopTimer());
regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 2 */
pixDisplayWithTitle(pix3, 0, 0, NULL, rp->display);
/* Convert the quantized image to rgb */
pix4 = pixConvertTo32(pix3);
/* Re-quantize using median cut */
pix5 = pixMedianCutQuant(pix4, 0);
regTestWritePixAndCheck(rp, pix5, IFF_PNG); /* 3 */
pixDisplayWithTitle(pix5, 0, 0, NULL, rp->display);
/* Re-quantize to few colors using median cut */
pix6 = pixFewColorsMedianCutQuantMixed(pix4, 30, 30, 100, 0, 0, 0);
regTestWritePixAndCheck(rp, pix6, IFF_PNG); /* 4 */
pixDisplayWithTitle(pix6, 0, 0, NULL, rp->display);
/* Octcube quantize mixed with gray */
startTimer();
pix7 = pixOctcubeQuantMixedWithGray(pix2, 4, 5, 5);
lept_stderr("Time to re-quantize mixed = %7.3f sec\n", stopTimer());
regTestWritePixAndCheck(rp, pix7, IFF_PNG); /* 5 */
pixDisplayWithTitle(pix7, 0, 0, NULL, rp->display);
/* Fixed octcube quantization */
startTimer();
pix8 = pixFixedOctcubeQuant256(pix2, 0);
lept_stderr("Time to re-quantize 256 = %7.3f sec\n", stopTimer());
regTestWritePixAndCheck(rp, pix8, IFF_PNG); /* 6 */
pixDisplayWithTitle(pix8, 0, 0, NULL, rp->display);
/* Remove unused colors */
startTimer();
pix9 = pixCopy(NULL, pix8);
pixRemoveUnusedColors(pix9);
lept_stderr("Time to remove unused colors = %7.3f sec\n", stopTimer());
regTestWritePixAndCheck(rp, pix9, IFF_PNG); /* 7 */
pixDisplayWithTitle(pix8, 0, 0, NULL, rp->display);
/* Compare before and after colors removed */
regTestComparePix(rp, pix8, pix9); /* 8 */
pixDestroy(&pixs);
pixDestroy(&pix1);
pixDestroy(&pix2);
pixDestroy(&pix3);
pixDestroy(&pix4);
pixDestroy(&pix5);
pixDestroy(&pix6);
pixDestroy(&pix7);
pixDestroy(&pix8);
pixDestroy(&pix9);
return regTestCleanup(rp);
}
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