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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.
*====================================================================*/
/*
* arithtest.c
*
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
main(int argc,
char **argv)
{
char *filein;
l_int32 w, h, same;
PIX *pixs, *pix1, *pix2, *pix3, *pix4, *pix5;
static char mainName[] = "arithtest";
if (argc != 2)
exit(ERROR_INT(" Syntax: arithtest filein", mainName, 1));
filein = argv[1];
if ((pixs = pixRead(filein)) == NULL)
exit(ERROR_INT("pix not made", mainName, 1));
w = pixGetWidth(pixs);
h = pixGetHeight(pixs);
/* input a grayscale image and convert it to 16 bpp */
pix1 = pixInitAccumulate(w, h, 0);
pixAccumulate(pix1, pixs, L_ARITH_ADD);
pixMultConstAccumulate(pix1, 255., 0);
pix2 = pixFinalAccumulate(pix1, 0, 16);
pixWrite("junkpix2", pix2, IFF_PNG);
/* convert it back to 8 bpp, linear mapped */
pix3 = pixMaxDynamicRange(pix2, L_LINEAR_SCALE);
pixWrite("junkpix3", pix3, IFF_PNG);
/* convert it back to 8 bpp using the MSB */
pix4 = pixRead("junkpix2");
pix5 = pixConvert16To8(pix4, 1);
pixWrite("junkpix5", pix5, IFF_PNG);
exit(0);
}
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