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Diffstat (limited to 'leptonica/prog/threshnorm_reg.c')
| -rw-r--r-- | leptonica/prog/threshnorm_reg.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/leptonica/prog/threshnorm_reg.c b/leptonica/prog/threshnorm_reg.c new file mode 100644 index 00000000..09f04635 --- /dev/null +++ b/leptonica/prog/threshnorm_reg.c @@ -0,0 +1,105 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * threshnorm__reg.c + * + * Regression test for adaptive threshold normalization. + */ + +#ifdef HAVE_CONFIG_H +#include <config_auto.h> +#endif /* HAVE_CONFIG_H */ + +#include <string.h> +#include "allheaders.h" + +static void AddTestSet(PIXA *pixa, PIX *pixs, + l_int32 filtertype, l_int32 edgethresh, + l_int32 smoothx, l_int32 smoothy, + l_float32 gamma, l_int32 minval, + l_int32 maxval, l_int32 targetthresh); + +int main(int argc, + char **argv) +{ +PIX *pixs, *pixd; +PIXA *pixa; +L_REGPARAMS *rp; + + if (regTestSetup(argc, argv, &rp)) + return 1; + + pixs = pixRead("stampede2.jpg"); + pixa = pixaCreate(0); + + AddTestSet(pixa, pixs, L_SOBEL_EDGE, 18, 40, 40, 0.7, -25, 280, 128); + AddTestSet(pixa, pixs, L_TWO_SIDED_EDGE, 18, 40, 40, 0.7, -25, 280, 128); + AddTestSet(pixa, pixs, L_SOBEL_EDGE, 10, 40, 40, 0.7, -15, 305, 128); + AddTestSet(pixa, pixs, L_TWO_SIDED_EDGE, 10, 40, 40, 0.7, -15, 305, 128); + AddTestSet(pixa, pixs, L_SOBEL_EDGE, 15, 40, 40, 0.6, -45, 285, 158); + AddTestSet(pixa, pixs, L_TWO_SIDED_EDGE, 15, 40, 40, 0.6, -45, 285, 158); + + pixDestroy(&pixs); + pixd = pixaDisplayTiledInColumns(pixa, 6, 1.0, 20, 0); + regTestWritePixAndCheck(rp, pixd, IFF_JFIF_JPEG); /* 0 */ + pixDisplayWithTitle(pixd, 100, 100, NULL, rp->display); + + pixDestroy(&pixd); + pixaDestroy(&pixa); + return regTestCleanup(rp); +} + + +void +AddTestSet(PIXA *pixa, + PIX *pixs, + l_int32 filtertype, + l_int32 edgethresh, + l_int32 smoothx, + l_int32 smoothy, + l_float32 gamma, + l_int32 minval, + l_int32 maxval, + l_int32 targetthresh) +{ +PIX *pix1, *pix2, *pix3; + + pixThresholdSpreadNorm(pixs, filtertype, edgethresh, + smoothx, smoothy, gamma, minval, + maxval, targetthresh, &pix1, NULL, &pix2); + pixaAddPix(pixa, pix1, L_INSERT); + pixaAddPix(pixa, pix2, L_INSERT); + pix3 = pixThresholdToBinary(pix2, targetthresh - 20); + pixaAddPix(pixa, pix3, L_INSERT); + pix3 = pixThresholdToBinary(pix2, targetthresh); + pixaAddPix(pixa, pix3, L_INSERT); + pix3 = pixThresholdToBinary(pix2, targetthresh + 20); + pixaAddPix(pixa, pix3, L_INSERT); + pix3 = pixThresholdToBinary(pix2, targetthresh + 40); + pixaAddPix(pixa, pix3, L_INSERT); + return; +} |