diff options
Diffstat (limited to 'leptonica/prog/recogtest5.c')
| -rw-r--r-- | leptonica/prog/recogtest5.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/leptonica/prog/recogtest5.c b/leptonica/prog/recogtest5.c new file mode 100644 index 00000000..6f46c6a9 --- /dev/null +++ b/leptonica/prog/recogtest5.c @@ -0,0 +1,115 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * recogtest5.c + * + * Test document image decoding (DID) approach to splitting characters + * + * This uses recogIdentifyMultiple() to first split the touching + * characters and then do the identification on the resulting + * single characters. Compare with recogtest4.c. + */ + +#ifdef HAVE_CONFIG_H +#include <config_auto.h> +#endif /* HAVE_CONFIG_H */ + +#include "string.h" +#include "allheaders.h" + +static PIX *GetBigComponent(PIX *pixs); + + +l_int32 main(int argc, + char **argv) +{ +l_int32 i, item; +l_int32 example[6] = {17, 20, 21, 22, 23, 24}; /* for decoding */ +PIX *pix1, *pix2, *pix3; +PIXA *pixa1, *pixa2, *pixa3; +L_RECOG *recog; + + if (argc != 1) { + lept_stderr(" Syntax: recogtest5\n"); + return 1; + } + + setLeptDebugOK(1); + lept_mkdir("lept/recog"); + + /* Generate the recognizer */ + pixa1 = pixaRead("recog/sets/train01.pa"); + recog = recogCreateFromPixa(pixa1, 0, 0, 0, 128, 1); /* no scaling */ + recogAverageSamples(&recog, 1); + recogWrite("/tmp/lept/recog/rec1.rec", recog); + + /* Show the templates */ + recogDebugAverages(&recog, 1); + recogShowMatchesInRange(recog, recog->pixa_tr, 0.0, 1.0, 1); + + /* Get a set of problem images to decode */ + pixa2 = pixaRead("recog/sets/test01.pa"); + + /* Decode a subset of them. It takes about 2 ms to decode a + * 4 digit number (Viterbi for splitting; identification against + * all templates; debug off. */ + for (i = 0; i < 6; i++) { +/* if (i != 3) continue; */ /* remove this comment to do all 6 */ + item = example[i]; + pix1 = pixaGetPix(pixa2, item, L_CLONE); + pixDisplay(pix1, 100, 100); + pix2 = GetBigComponent(pix1); + recogIdentifyMultiple(recog, pix2, 0, 0, NULL, &pixa3, NULL, 1); + pix3 = pixaDisplayTiledInColumns(pixa3, 1, 1.0, 20, 2); + pixDisplay(pix3, 800, 100); + pixDestroy(&pix1); + pixDestroy(&pix2); + pixDestroy(&pix3); + pixaDestroy(&pixa3); + } + + pixaDestroy(&pixa1); + pixaDestroy(&pixa2); + recogDestroy(&recog); + return 0; +} + +static PIX * +GetBigComponent(PIX *pixs) +{ +BOX *box; +PIX *pix1, *pixd; + + pix1 = pixMorphSequence(pixs, "c40.7 + o20.15 + d25.1", 0); + pixClipToForeground(pix1, NULL, &box); + pixd = pixClipRectangle(pixs, box, NULL); + pixDestroy(&pix1); + boxDestroy(&box); + return pixd; +} + + |