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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.
*====================================================================*/
/*
* colorquanttest.c
*
* for testing various octree quantizers
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
#define NCOLORS 250
#define DITHER 1
/* for simple colorspace filled with octcubes */
#define OCTCUBE_LEVEL 3
main(int argc,
char **argv)
{
l_int32 nerrors, same;
PIX *pixs, *pixc, *pixc1, *pixc2, *pixc3, *pixc4, *pixd;
char *filein, *fileout;
static char mainName[] = "colorquanttest";
if (argc != 3)
exit(ERROR_INT(" Syntax: colorquanttest filein fileout", mainName, 1));
pixc = pixd = NULL;
filein = argv[1];
fileout = argv[2];
if ((pixs = pixRead(filein)) == NULL)
exit(ERROR_INT("pixs not made", mainName, 1));
#if 1 /* median cut quantizer */
startTimer();
pixc = pixMedianCutQuantGeneral(pixs, 0, 0, 256, 5, 1);
/* pixc = pixMedianCutQuant(pixs, 1); */
fprintf(stderr, "finished making cmapped pix: %7.3f secs\n", stopTimer());
pixWrite(fileout, pixc, IFF_PNG);
pixDestroy(&pixc);
#endif
#if 0 /* simple one-pass quantizer */
startTimer();
pixc = pixColorQuant1Pass(pixs, DITHER);
fprintf(stderr, "finished making cmapped pix: %7.3f secs\n", stopTimer());
pixWrite(fileout, pixc, IFF_PNG);
#if 1
pixd = pixRemoveColormap(pixc, REMOVE_CMAP_TO_FULL_COLOR);
pixWrite("junkimage", pixd, IFF_PNG);
pixDestroy(&pixd);
pixDestroy(&pixc);
#endif
#endif
#if 0 /* better 2-pass quantizer */
startTimer();
pixc = pixOctreeColorQuant(pixs, NCOLORS, DITHER);
fprintf(stderr, "finished making cmapped pix: %7.3f secs\n", stopTimer());
pixWrite(fileout, pixc, IFF_PNG);
#if 1
pixd = pixRemoveColormap(pixc, REMOVE_CMAP_TO_FULL_COLOR);
pixWrite("junkimage", pixd, IFF_PNG);
pixDestroy(&pixd);
pixDestroy(&pixc);
#endif
#endif
#if 0 /* simple octcube quantizer */
pixd = pixFixedOctcubeQuantRGB(pixs, OCTCUBE_LEVEL);
pixWrite(fileout, pixd, IFF_JFIF_JPEG);
pixDestroy(&pixd);
#endif
#if 0 /* quantize to gray */
pixc1 = pixRemoveColormap(pixs, REMOVE_CMAP_TO_GRAYSCALE);
/* pixc = pixThresholdTo4bpp(pixc1, 16, 1); */
pixc = pixThresholdTo2bpp(pixc1, 4, 1);
pixWrite(fileout, pixc, IFF_PNG);
pixDestroy(&pixc);
pixDestroy(&pixc1);
#endif
#if 0 /* quantize to color */
pixc1 = pixRemoveColormap(pixs, REMOVE_CMAP_TO_FULL_COLOR);
pixc = pixOctreeQuant(pixc1, 256, 1);
pixWrite(fileout, pixc, IFF_PNG);
pixDestroy(&pixc);
pixDestroy(&pixc1);
#endif
#if 0 /* try to get all the colors */
pixc1 = pixRemoveColormap(pixs, REMOVE_CMAP_TO_FULL_COLOR);
pixc = pixFixedOctcubeQuantCmap(pixc1, 1);
pixWrite(fileout, pixc, IFF_PNG);
pixDestroy(&pixc);
pixDestroy(&pixc1);
#endif
#if 0 /* simple 4 or 8 bpp quantizer */
startTimer();
pixc = pixOctreeQuant(pixs, 256, 0);
fprintf(stderr, "finished making cmapped pix: %7.3f secs\n", stopTimer());
pixWrite(fileout, pixc, IFF_PNG);
pixDestroy(&pixc);
#endif
#if 0 /* simple 4 or 8 bpp quantizer; back to RGB; quantize again */
pixc = pixOctreeQuant(pixs, 256, 0);
pixcmapWriteStream(stderr, pixGetColormap(pixc));
pixWrite(fileout, pixc, IFF_PNG);
pixc1 = pixRemoveColormap(pixc, REMOVE_CMAP_BASED_ON_SRC);
pixWrite("junkpixc1", pixc1, IFF_PNG);
pixc2 = pixConvertRGBToColormap(pixc1, 5, &nerrors);
pixWrite("junkpixc2", pixc2, IFF_PNG);
pixcmapWriteStream(stderr, pixGetColormap(pixc2));
pixEqual(pixc, pixc2, &same);
fprintf(stderr, "Same? %d\n", same);
pixDestroy(&pixc);
pixDestroy(&pixc1);
pixDestroy(&pixc2);
#endif
#if 0 /* colormap --> RGB --> fixed octcube quant to 4 or 8 bpp
* --> back to RGB --> quantize again. */
pixc1 = pixRemoveColormap(pixs, REMOVE_CMAP_TO_FULL_COLOR);
pixWrite("junkc1", pixc1, IFF_PNG);
pixc2 = pixFixedOctcubeQuant(pixc1, 3);
pixWrite("junkc2", pixc2, IFF_PNG);
pixcmapWriteStream(stderr, pixGetColormap(pixc2));
pixc3 = pixRemoveColormap(pixc2, REMOVE_CMAP_BASED_ON_SRC);
pixWrite("junkc3", pixc3, IFF_PNG);
pixc4 = pixConvertRGBToColormap(pixc3, 3, &nerrors);
pixWrite("junkc4", pixc4, IFF_PNG);
pixcmapWriteStream(stderr, pixGetColormap(pixc4));
pixEqual(pixc1, pixc2, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc1, pixc3, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc1, pixc4, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc2, pixc3, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc2, pixc4, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc3, pixc4, &same);
fprintf(stderr, "Same? %d\n", same);
pixDestroy(&pixs);
pixDestroy(&pixc1);
pixDestroy(&pixc2);
pixDestroy(&pixc3);
pixDestroy(&pixc4);
#endif
#if 0 /* colormap --> RGB --> simple 4 or 8 bpp quantizer
* --> back to RGB --> quantize again.
* e.g., do this with small images */
pixc1 = pixRemoveColormap(pixs, REMOVE_CMAP_TO_FULL_COLOR);
pixWrite("junkc1", pixc1, IFF_PNG);
pixc2 = pixOctreeQuant(pixc1, 16, 1);
pixWrite("junkc2", pixc2, IFF_PNG);
pixcmapWriteStream(stderr, pixGetColormap(pixc2));
pixc3 = pixRemoveColormap(pixc2, REMOVE_CMAP_BASED_ON_SRC);
pixWrite("junkc3", pixc3, IFF_PNG);
pixc4 = pixConvertRGBToColormap(pixc3, 2, &nerrors);
pixWrite("junkc4", pixc4, IFF_PNG);
pixcmapWriteStream(stderr, pixGetColormap(pixc4));
pixEqual(pixc1, pixc2, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc1, pixc3, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc1, pixc4, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc2, pixc3, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc2, pixc4, &same);
fprintf(stderr, "Same? %d\n", same);
pixEqual(pixc3, pixc4, &same);
fprintf(stderr, "Same? %d\n", same);
pixDestroy(&pixs);
pixDestroy(&pixc1);
pixDestroy(&pixc2);
pixDestroy(&pixc3);
pixDestroy(&pixc4);
#endif
exit(0);
}
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