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/*====================================================================*
- Copyright (C) 2001 Leptonica. All rights reserved.
- This software is distributed in the hope that it will be
- useful, but with NO WARRANTY OF ANY KIND.
- No author or distributor accepts responsibility to anyone for the
- consequences of using this software, or for whether it serves any
- particular purpose or works at all, unless he or she says so in
- writing. Everyone is granted permission to copy, modify and
- redistribute this source code, for commercial or non-commercial
- purposes, with the following restrictions: (1) the origin of this
- source code must not be misrepresented; (2) modified versions must
- be plainly marked as such; and (3) this notice may not be removed
- or altered from any source or modified source distribution.
*====================================================================*/
/*
* digitprep1.c
*
* Extract barcode digits and put in a pixaa (a resource file for
* readnum.c).
*/
#include <stdio.h>
#include <stdlib.h>
#include "allheaders.h"
static const l_float32 HEIGHT = 32.0; /* pixels */
main(int argc,
char **argv)
{
char buf[8];
l_int32 i, n, h;
l_float32 scalefact;
BOXA *boxa;
PIX *pixs, *pix, *pixt1, *pixt2;
PIXA *pixa, *pixas, *pixad;
PIXAA *pixaa;
static char mainName[] = "digitprep1";
if (argc != 1) {
ERROR_INT(" Syntax: digitprep1", mainName, 1);
return 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 */
pixt1 = pixaGetPix(pixas, n - 1, L_CLONE);
pixaInsertPix(pixas, 0, pixt1, NULL);
pixaRemovePix(pixas, n);
/* Make the output scaled pixa */
pixad = pixaCreate(n);
for (i = 0; i < n; i++) {
pixt1 = pixaGetPix(pixas, i, L_CLONE);
pixGetDimensions(pixt1, NULL, &h, NULL);
scalefact = HEIGHT / (l_float32)h;
pixt2 = pixScale(pixt1, scalefact, scalefact);
if (pixGetHeight(pixt2) != 32)
return ERROR_INT("height not 32!", mainName, 1);
sprintf(buf, "%d", i);
pixSetText(pixt2, buf);
pixaAddPix(pixad, pixt2, L_INSERT);
pixDestroy(&pixt1);
}
/* Save in a pixaa, with 1 pix in each pixa */
pixaa = pixaaCreateFromPixa(pixad, 1, L_CHOOSE_CONSECUTIVE, L_CLONE);
pixaaWrite("junkdigits.pixaa", pixaa);
/* Show result */
pixt1 = pixaaDisplayByPixa(pixaa, 20, 20, 1000);
pixDisplay(pixt1, 100, 100);
pixDestroy(&pixt1);
boxaDestroy(&boxa);
pixaDestroy(&pixa);
pixaDestroy(&pixas);
pixaDestroy(&pixad);
pixaaDestroy(&pixaa);
return 0;
}
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