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Diffstat (limited to 'leptonica/prog/locminmax_reg.c')
| -rw-r--r-- | leptonica/prog/locminmax_reg.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/leptonica/prog/locminmax_reg.c b/leptonica/prog/locminmax_reg.c new file mode 100644 index 00000000..422555eb --- /dev/null +++ b/leptonica/prog/locminmax_reg.c @@ -0,0 +1,102 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * locminmax_reg.c + * + * Note: you can remove all minima that are touching the border, using: + * pix3 = pixRemoveBorderConnComps(pix1, 8); + */ + +#ifdef HAVE_CONFIG_H +#include <config_auto.h> +#endif /* HAVE_CONFIG_H */ + +#include <math.h> +#include "allheaders.h" + +void DoLocMinmax(L_REGPARAMS *rp, PIX *pixs, l_int32 minmax, l_int32 maxmin); + +int main(int argc, + char **argv) +{ +l_int32 i, j; +l_float32 f; +PIX *pix1, *pix2, *pix3; +L_REGPARAMS *rp; + + if (regTestSetup(argc, argv, &rp)) + return 1; + + pix1 = pixCreate(500, 500, 8); + for (i = 0; i < 500; i++) { + for (j = 0; j < 500; j++) { + f = 128.0 + 26.3 * sin(0.0438 * (l_float32)i); + f += 33.4 * cos(0.0712 * (l_float32)i); + f += 18.6 * sin(0.0561 * (l_float32)j); + f += 23.6 * cos(0.0327 * (l_float32)j); + pixSetPixel(pix1, j, i, (l_int32)f); + } + } + pix2 = pixRead("karen8.jpg"); + pix3 = pixBlockconv(pix2, 10, 10); + DoLocMinmax(rp, pix1, 0, 0); /* 0 - 2 */ + DoLocMinmax(rp, pix3, 50, 100); /* 3 - 5 */ + pixDestroy(&pix1); + pixDestroy(&pix2); + pixDestroy(&pix3); + return regTestCleanup(rp); +} + +void +DoLocMinmax(L_REGPARAMS *rp, + PIX *pixs, + l_int32 minmax, + l_int32 maxmin) +{ +l_uint32 redval, greenval; +PIX *pix1, *pix2, *pix3, *pixd; +PIXA *pixa; + + pixa = pixaCreate(0); + regTestWritePixAndCheck(rp, pixs, IFF_PNG); /* 0 */ + pixaAddPix(pixa, pixs, L_COPY); + pixLocalExtrema(pixs, minmax, maxmin, &pix1, &pix2); + composeRGBPixel(255, 0, 0, &redval); + composeRGBPixel(0, 255, 0, &greenval); + pixd = pixConvertTo32(pixs); + pixPaintThroughMask(pixd, pix2, 0, 0, greenval); + pixPaintThroughMask(pixd, pix1, 0, 0, redval); + regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 1 */ + pixaAddPix(pixa, pixd, L_INSERT); + pix3 = pixaDisplayTiledInColumns(pixa, 2, 1.0, 25, 2); + regTestWritePixAndCheck(rp, pix3, IFF_PNG); /* 2 */ + pixDisplayWithTitle(pix3, 300, 0, NULL, rp->display); + pixaDestroy(&pixa); + pixDestroy(&pix1); + pixDestroy(&pix2); + pixDestroy(&pix3); +} |