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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.
*====================================================================*/
/*
* ccbord_reg.c
*
* Regression test for border-following representations of binary images.
* This uses the steps in ccbordtest.c to test specified images.
*/
#ifdef HAVE_CONFIG_H
#include <config_auto.h>
#endif /* HAVE_CONFIG_H */
#include <string.h>
#include "allheaders.h"
void RunCCBordTest(const char *fname, L_REGPARAMS *rp);
int main(int argc,
char **argv)
{
L_REGPARAMS *rp;
if (regTestSetup(argc, argv, &rp))
return 1;
lept_mkdir("lept/ccbord");
RunCCBordTest("feyn-fract.tif", rp);
RunCCBordTest("dreyfus1.png", rp);
return regTestCleanup(rp);
}
/* ----------------------------------------------- */
void RunCCBordTest(const char *fname,
L_REGPARAMS *rp)
{
char *svgstr;
l_int32 count, disp;
CCBORDA *ccba, *ccba2;
PIX *pixs, *pixd, *pixd2, *pixd3;
PIX *pixt, *pixc, *pixc2;
pixs = pixRead(fname);
disp = rp->display;
/*------------------------------------------------------------------*
* Get border representation and verify border pixels *
*------------------------------------------------------------------*/
if(disp) lept_stderr("Get border representation...");
ccba = pixGetAllCCBorders(pixs);
/* Get global locs directly and display borders */
if (disp) lept_stderr("Convert from local to global locs...");
ccbaGenerateGlobalLocs(ccba);
if (disp) lept_stderr("display border representation...");
pixd = ccbaDisplayBorder(ccba);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 0,7 */
pixDisplayWithTitle(pixd, 0, 0, NULL, rp->display);
pixDestroy(&pixd);
/* Get step chain code, then global coords, and display borders */
if (disp) lept_stderr("get step chain code...");
ccbaGenerateStepChains(ccba);
if (disp) lept_stderr("convert from step chain to global locs...");
ccbaStepChainsToPixCoords(ccba, CCB_GLOBAL_COORDS);
if (disp) lept_stderr("display border representation\n");
pixd = ccbaDisplayBorder(ccba);
regTestWritePixAndCheck(rp, pixd, IFF_PNG); /* 1,8 */
pixDisplayWithTitle(pixd, 200, 0, NULL, rp->display);
/* Check if border pixels are in original set */
lept_stderr("Check if border pixels are in original set\n");
pixt = pixSubtract(NULL, pixd, pixs);
pixCountPixels(pixt, &count, NULL);
if (count == 0)
lept_stderr(" ==> all border pixels are in original set\n");
else
lept_stderr(" ==> %d border pixels are not in original set\n", count);
pixDestroy(&pixt);
/* Display image */
lept_stderr("Reconstruct image\n");
pixc = ccbaDisplayImage2(ccba);
regTestWritePixAndCheck(rp, pixc, IFF_PNG); /* 2,9 */
pixDisplayWithTitle(pixc, 400, 0, NULL, rp->display);
/* Check with original to see if correct */
pixXor(pixc, pixc, pixs);
pixCountPixels(pixc, &count, NULL);
if (count == 0)
lept_stderr(" ==> perfect direct reconstruction\n");
else {
l_int32 w, h, i, j;
l_uint32 val;
lept_stderr(" ==> %d pixels in error in reconstruction\n", count);
#if 1
w = pixGetWidth(pixc);
h = pixGetHeight(pixc);
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++) {
pixGetPixel(pixc, j, i, &val);
if (val == 1)
lept_stderr("bad pixel at (%d, %d)\n", j, i);
}
}
pixWrite("/tmp/lept/ccbord/badpixels1.png", pixc, IFF_PNG);
#endif
}
/*----------------------------------------------------------*
* Write to file (compressed) and read back *
*----------------------------------------------------------*/
if (disp) lept_stderr("Write serialized step data...");
ccbaWrite("/tmp/lept/ccbord/stepdata.ccb", ccba);
if (disp) lept_stderr("read serialized step data...");
ccba2 = ccbaRead("/tmp/lept/ccbord/stepdata.ccb");
/* Display the border pixels again */
if (disp) lept_stderr("convert from step chain to global locs...");
ccbaStepChainsToPixCoords(ccba2, CCB_GLOBAL_COORDS);
if (disp) lept_stderr("display border representation\n");
pixd2 = ccbaDisplayBorder(ccba2);
regTestWritePixAndCheck(rp, pixd2, IFF_PNG); /* 3,10 */
pixDisplayWithTitle(pixd2, 600, 0, NULL, rp->display);
/* Check if border pixels are same as first time */
lept_stderr("Check border after write/read\n");
pixXor(pixd2, pixd2, pixd);
pixCountPixels(pixd2, &count, NULL);
if (count == 0)
lept_stderr(" ==> perfect w/r border recon\n");
else
lept_stderr(" ==> %d pixels in error in w/r recon\n", count);
pixDestroy(&pixd2);
/* Display image again */
if (disp) lept_stderr("Convert from step chain to local coords...\n");
ccbaStepChainsToPixCoords(ccba2, CCB_LOCAL_COORDS);
lept_stderr("Reconstruct image from file\n");
pixc2 = ccbaDisplayImage2(ccba2);
regTestWritePixAndCheck(rp, pixc2, IFF_PNG); /* 4,11 */
pixDisplayWithTitle(pixc2, 800, 0, NULL, rp->display);
/* Check with original to see if correct */
pixXor(pixc2, pixc2, pixs);
pixCountPixels(pixc2, &count, NULL);
if (count == 0)
lept_stderr(" ==> perfect image recon\n");
else {
l_int32 w, h, i, j;
l_uint32 val;
lept_stderr(" ==> %d pixels in error in image recon\n", count);
#if 1
w = pixGetWidth(pixc2);
h = pixGetHeight(pixc2);
for (i = 0; i < h; i++) {
for (j = 0; j < w; j++) {
pixGetPixel(pixc2, j, i, &val);
if (val == 1)
lept_stderr("bad pixel at (%d, %d)\n", j, i);
}
}
pixWrite("/tmp/lept/ccbord/badpixels2.png", pixc, IFF_PNG);
#endif
}
/*----------------------------------------------------------*
* Make, display and check single path border for svg *
*----------------------------------------------------------*/
/* Make local single path border for svg */
if (disp) lept_stderr("Make local single path borders for svg ...");
ccbaGenerateSinglePath(ccba);
/* Generate global single path border */
if (disp) lept_stderr("generate global single path borders ...");
ccbaGenerateSPGlobalLocs(ccba, CCB_SAVE_TURNING_PTS);
/* Display border pixels from single path */
if (disp) lept_stderr("display border from single path\n");
pixd3 = ccbaDisplaySPBorder(ccba);
regTestWritePixAndCheck(rp, pixd3, IFF_PNG); /* 5,12 */
pixDisplayWithTitle(pixd3, 1000, 0, NULL, rp->display);
/* Check if border pixels are in original set */
lept_stderr("Check if border pixels are in original set\n");
pixt = pixSubtract(NULL, pixd3, pixs);
pixCountPixels(pixt, &count, NULL);
if (count == 0)
lept_stderr(" ==> all border pixels are in original set\n");
else
lept_stderr(" ==> %d border pixels are not in original set\n", count);
lept_stderr("============================================\n");
pixDestroy(&pixt);
pixDestroy(&pixd3);
/* Output in svg file format */
svgstr = ccbaWriteSVGString(ccba);
regTestWriteDataAndCheck(rp, svgstr, strlen(svgstr), "ccb"); /* 6,13 */
ccbaDestroy(&ccba2);
ccbaDestroy(&ccba);
pixDestroy(&pixs);
pixDestroy(&pixd);
pixDestroy(&pixc);
pixDestroy(&pixc2);
lept_free(svgstr);
}
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