/*
* Dewarp image
* todo: test: https://github.com/renard314/leptonica-samples/blob/master/src/Examples.cpp
*/
void MainWindow::on_actionDewarp_triggered() {
QApplication::setOverrideCursor(Qt::WaitCursor);
Pix* pixd;
dewarpSinglePage(pixs, 1, 100, 1, &pixd, NULL, 0);
pixs = pixCopy(NULL, pixd);
pixDestroy(&pixd);
setPixToScene();
this->statusBar()->showMessage(tr("Finished..."), 2000);
modified = true;
updateTitle();
QApplication::restoreOverrideCursor();
}
l_int32 main(int argc,
char **argv)
{
l_int32 method, pageno;
L_DEWARP *dew1;
L_DEWARPA *dewa;
PIX *pixs, *pixn, *pixg, *pixb, *pixd;
static char mainName[] = "dewarptest2";
if (argc != 2 && argc != 4)
return ERROR_INT("Syntax: dewarptest2 method [image pageno]",
mainName, 1);
if (argc == 2) {
pixs = pixRead("cat-35.jpg");
pageno = 35;
}
else {
pixs = pixRead(argv[2]);
pageno = atoi(argv[3]);
}
if (!pixs)
return ERROR_INT("image not read", mainName, 1);
method = atoi(argv[1]);
lept_mkdir("lept");
if (method == 1) { /* Use single page dewarp function */
dewarpSinglePage(pixs, 1, 100, 1, &pixd, NULL, 1);
pixDisplay(pixd, 100, 100);
} else { /* Break down into multiple steps; require min of only 6 lines */
dewa = dewarpaCreate(40, 30, 1, 6, 50);
dewarpaUseBothArrays(dewa, 1);
#if NORMALIZE
/* Normalize for varying background and binarize */
pixn = pixBackgroundNormSimple(pixs, NULL, NULL);
pixg = pixConvertRGBToGray(pixn, 0.5, 0.3, 0.2);
pixb = pixThresholdToBinary(pixg, 130);
pixDestroy(&pixn);
#else
/* Don't normalize; just threshold and clean edges */
pixg = pixConvertTo8(pixs, 0);
pixb = pixThresholdToBinary(pixg, 100);
pixSetOrClearBorder(pixb, 30, 30, 40, 40, PIX_CLR);
#endif
/* Run the basic functions */
dew1 = dewarpCreate(pixb, pageno);
dewarpaInsertDewarp(dewa, dew1);
dewarpBuildPageModel(dew1, "/tmp/lept/test2_model.pdf");
dewarpaApplyDisparity(dewa, pageno, pixg, -1, 0, 0, &pixd,
"/tmp/lept/test2_apply.pdf");
dewarpaInfo(stderr, dewa);
dewarpaDestroy(&dewa);
pixDestroy(&pixg);
pixDestroy(&pixb);
}
pixDestroy(&pixs);
pixDestroy(&pixd);
return 0;
}
