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/*====================================================================*
- 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;
}
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