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Diffstat (limited to 'leptonica/prog/converttogray.c')
| -rw-r--r-- | leptonica/prog/converttogray.c | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/leptonica/prog/converttogray.c b/leptonica/prog/converttogray.c new file mode 100644 index 00000000..eaa3d837 --- /dev/null +++ b/leptonica/prog/converttogray.c @@ -0,0 +1,123 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * converttogray.c + * + */ + +#ifdef HAVE_CONFIG_H +#include <config_auto.h> +#endif /* HAVE_CONFIG_H */ + +#include "allheaders.h" + +int main(int argc, + char **argv) +{ +char *filein; +char *fileout = NULL; +l_int32 d, same; +PIX *pixs, *pixd, *pix1, *pix2, *pix3, *pix4; +static char mainName[] = "converttogray"; + + if (argc != 2 && argc != 3) + return ERROR_INT(" Syntax: converttogray filein [fileout]", + mainName, 1); + + setLeptDebugOK(1); + lept_mkdir("lept/gray"); + + filein = argv[1]; + if (argc == 3) fileout = argv[2]; + if ((pixs = pixRead(filein)) == NULL) + return ERROR_INT("pixs not made", mainName, 1); + + if (fileout) { + pixd = pixConvertRGBToGray(pixs, 0.33, 0.34, 0.33); + pixWrite(fileout, pixd, IFF_PNG); + pixDestroy(&pixs); + pixDestroy(&pixd); + return 0; + } + + d = pixGetDepth(pixs); + if (d == 2) { + pix1 = pixConvert2To8(pixs, 0x00, 0x55, 0xaa, 0xff, TRUE); + pix2 = pixConvert2To8(pixs, 0x00, 0x55, 0xaa, 0xff, FALSE); + pixEqual(pix1, pix2, &same); + if (same) + lept_stderr("images are the same\n"); + else + lept_stderr("images are different!\n"); + pixWrite("/tmp/lept/gray/pix1.png", pix1, IFF_PNG); + pixWrite("/tmp/lept/gray/pix2.png", pix2, IFF_PNG); + pixDestroy(&pix1); + pixDestroy(&pix2); + pixSetColormap(pixs, NULL); + pix3 = pixConvert2To8(pixs, 0x00, 0x55, 0xaa, 0xff, TRUE); + pix4 = pixConvert2To8(pixs, 0x00, 0x55, 0xaa, 0xff, FALSE); + pixEqual(pix3, pix4, &same); + if (same) + lept_stderr("images are the same\n"); + else + lept_stderr("images are different!\n"); + pixWrite("/tmp/lept/gray/pix3.png", pix3, IFF_PNG); + pixWrite("/tmp/lept/gray/pix4.png", pix4, IFF_PNG); + pixDestroy(&pix3); + pixDestroy(&pix4); + } else if (d == 4) { + pix1 = pixConvert4To8(pixs, TRUE); + pix2 = pixConvert4To8(pixs, FALSE); + pixEqual(pix1, pix2, &same); + if (same) + lept_stderr("images are the same\n"); + else + lept_stderr("images are different!\n"); + pixWrite("/tmp/lept/gray/pix1.png", pix1, IFF_PNG); + pixWrite("/tmp/lept/gray/pix2.png", pix2, IFF_PNG); + pixDestroy(&pix1); + pixDestroy(&pix2); + pixSetColormap(pixs, NULL); + pix3 = pixConvert4To8(pixs, TRUE); + pix4 = pixConvert4To8(pixs, FALSE); + pixEqual(pix3, pix4, &same); + if (same) + lept_stderr("images are the same\n"); + else + lept_stderr("images are different!\n"); + pixWrite("/tmp/lept/gray/pix3.png", pix3, IFF_PNG); + pixWrite("/tmp/lept/gray/pix4.png", pix4, IFF_PNG); + pixDestroy(&pix3); + pixDestroy(&pix4); + } else { + L_INFO("only converts 2 and 4 bpp; d = %d\n", mainName, d); + } + + pixDestroy(&pixs); + return 0; +} + |