/*
* Page orientation detection (four 90 degree angles) Rasterop implementation
*/
void MainWindow::on_actionDetectOrientation_triggered() {
l_int32 orient, alt_rot;
l_float32 upconf1, leftconf1;
PIX *fpixs;
fpixs = pixConvertTo1(pixs, 130);
pixOrientDetect(fpixs, &upconf1, &leftconf1, 0, 0);
makeOrientDecision(upconf1, leftconf1, 0, 0, &orient, 1);
if ((upconf1 > 1) && abs(upconf1) > abs(leftconf1)) alt_rot = 0;
if ((leftconf1 > 1) && abs(leftconf1) > abs(upconf1)) alt_rot = 90;
if ((upconf1 < -1) && abs(upconf1) > abs(leftconf1)) alt_rot = 180;
if ((leftconf1 < -1) && abs(leftconf1) > abs(upconf1)) alt_rot = 270;
if (orient == L_TEXT_ORIENT_UNKNOWN) {
statusBar()->showMessage(
tr("Confidence is low; no determination is made. "
"But maybe there is %1 deg rotation.").arg(alt_rot),
4000);
} else if (orient == L_TEXT_ORIENT_UP) {
statusBar()->showMessage(tr("Text is rightside-up"), 4000);
alt_rot = 0;
} else if (orient == L_TEXT_ORIENT_LEFT) {
statusBar()->showMessage(tr("Text is rotated 90 deg ccw"), 4000);
alt_rot = 90;
} else if (orient == L_TEXT_ORIENT_DOWN) {
statusBar()->showMessage(tr("Text is upside-down"), 4000);
alt_rot = 180;
} else { /* orient == L_TEXT_ORIENT_RIGHT */
statusBar()->showMessage(tr("Text is rotated 90 deg cw"), 4000);
alt_rot = 270;
}
pixDestroy(&fpixs);
if (alt_rot) {
QMessageBox::StandardButton reply;
reply = QMessageBox::question(this, tr("Fix orientation?"),
tr("Rotate image by %1 degrees?").
arg(alt_rot),
QMessageBox::Yes|QMessageBox::No);
if (reply == QMessageBox::Yes) {
rotate(alt_rot/90);
}
}
}
main(int argc,
char **argv)
{
char *filein;
l_int32 i, orient;
l_float32 upconf1, upconf2, leftconf1, leftconf2, conf1, conf2;
PIX *pixs, *pixt1, *pixt2;
static char mainName[] = "flipdetect_reg";
if (argc != 2)
exit(ERROR_INT(" Syntax: flipdetect_reg filein", mainName, 1));
filein = argv[1];
if ((pixt1 = pixRead(filein)) == NULL)
exit(ERROR_INT("pixt1 not made", mainName, 1));
pixs = pixConvertTo1(pixt1, 130);
pixDestroy(&pixt1);
fprintf(stderr, "\nTest orientation detection\n");
startTimer();
pixOrientDetect(pixs, &upconf1, &leftconf1, 0, 0);
fprintf(stderr, "Time for rop orient test: %7.3f sec\n", stopTimer());
makeOrientDecision(upconf1, leftconf1, 0, 0, &orient, 1);
startTimer();
pixOrientDetectDwa(pixs, &upconf2, &leftconf2, 0, 0);
fprintf(stderr, "Time for dwa orient test: %7.3f sec\n", stopTimer());
if (upconf1 == upconf2 && leftconf1 == leftconf2) {
printStarredMessage("Orient results identical");
fprintf(stderr, "upconf = %7.3f, leftconf = %7.3f\n",
upconf1, leftconf1);
}
else {
printStarredMessage("Orient results differ");
fprintf(stderr, "upconf1 = %7.3f, upconf2 = %7.3f\n", upconf1, upconf2);
fprintf(stderr, "leftconf1 = %7.3f, leftconf2 = %7.3f\n",
leftconf1, leftconf2);
}
pixt1 = pixCopy(NULL, pixs);
fprintf(stderr, "\nTest orient detection for 4 orientations\n");
for (i = 0; i < 4; i++) {
pixOrientDetectDwa(pixt1, &upconf2, &leftconf2, 0, 0);
makeOrientDecision(upconf2, leftconf2, 0, 0, &orient, 1);
if (i == 3) break;
pixt2 = pixRotate90(pixt1, 1);
pixDestroy(&pixt1);
pixt1 = pixt2;
}
pixDestroy(&pixt1);
fprintf(stderr, "\nTest mirror reverse detection\n");
startTimer();
pixMirrorDetect(pixs, &conf1, 0, 1);
fprintf(stderr, "Time for rop mirror flip test: %7.3f sec\n", stopTimer());
startTimer();
pixMirrorDetectDwa(pixs, &conf2, 0, 0);
fprintf(stderr, "Time for dwa mirror flip test: %7.3f sec\n", stopTimer());
if (conf1 == conf2) {
printStarredMessage("Mirror results identical");
fprintf(stderr, "conf = %7.3f\n", conf1);
}
else {
printStarredMessage("Mirror results differ");
fprintf(stderr, "conf1 = %7.3f, conf2 = %7.3f\n", conf1, conf2);
}
fprintf(stderr, "\nSafer version of up-down tests\n");
pixUpDownDetectGeneral(pixs, &conf1, 0, 10, 1);
pixUpDownDetectGeneralDwa(pixs, &conf2, 0, 10, 1);
if (conf1 == conf2)
fprintf(stderr, "Confidence results are identical\n");
else
fprintf(stderr, "Confidence results differ\n");
pixDestroy(&pixs);
exit(0);
}