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Diffstat (limited to 'leptonica/prog/digitprep1.c')
| -rw-r--r-- | leptonica/prog/digitprep1.c | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/leptonica/prog/digitprep1.c b/leptonica/prog/digitprep1.c new file mode 100644 index 00000000..835d8015 --- /dev/null +++ b/leptonica/prog/digitprep1.c @@ -0,0 +1,106 @@ +/*====================================================================* + - 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. + *====================================================================*/ + +/* + * digitprep1.c + * + * Extract barcode digits and put in a pixaa (a resource file for + * readnum.c). + */ + +#ifdef HAVE_CONFIG_H +#include <config_auto.h> +#endif /* HAVE_CONFIG_H */ + +#include "allheaders.h" + +static const l_int32 HEIGHT = 32; /* pixels */ + +int main(int argc, + char **argv) +{ +char buf[16]; +l_int32 i, n, h; +l_float32 scalefact; +BOXA *boxa; +PIX *pixs, *pix1, *pix2; +PIXA *pixa, *pixas, *pixad; +PIXAA *paa; +static char mainName[] = "digitprep1"; + + if (argc != 1) { + ERROR_INT(" Syntax: digitprep1", mainName, 1); + return 1; + } + + setLeptDebugOK(1); + if ((pixs = pixRead("barcode-digits.png")) == NULL) + return ERROR_INT("pixs not read", mainName, 1); + + /* Extract the digits and scale to HEIGHT */ + boxa = pixConnComp(pixs, &pixa, 8); + pixas = pixaSort(pixa, L_SORT_BY_X, L_SORT_INCREASING, NULL, L_CLONE); + n = pixaGetCount(pixas); + + /* Move the last ("0") to the first position */ + pix1 = pixaGetPix(pixas, n - 1, L_CLONE); + pixaInsertPix(pixas, 0, pix1, NULL); + pixaRemovePix(pixas, n); + + /* Make the output scaled pixa */ + pixad = pixaCreate(n); + for (i = 0; i < n; i++) { + pix1 = pixaGetPix(pixas, i, L_CLONE); + pixGetDimensions(pix1, NULL, &h, NULL); + scalefact = HEIGHT / (l_float32)h; + pix2 = pixScale(pix1, scalefact, scalefact); + if (pixGetHeight(pix2) != 32) + return ERROR_INT("height not 32!", mainName, 1); + snprintf(buf, sizeof(buf), "%d", i); + pixSetText(pix2, buf); + pixaAddPix(pixad, pix2, L_INSERT); + pixDestroy(&pix1); + } + + /* Save in a pixaa, with 1 pix in each pixa */ + paa = pixaaCreateFromPixa(pixad, 1, L_CHOOSE_CONSECUTIVE, L_CLONE); + pixaaWrite("/tmp/lept/barcode_digits.paa", paa); + + /* Show result */ + pix1 = pixaaDisplayByPixa(paa, 50, 1.0, 20, 20, 0); + pixDisplay(pix1, 100, 100); + pixDestroy(&pix1); + + pixDestroy(&pixs); + boxaDestroy(&boxa); + pixaDestroy(&pixa); + pixaDestroy(&pixas); + pixaDestroy(&pixad); + pixaaDestroy(&paa); + return 0; +} + + |