Пример #1
0
/*
 * 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);
    }
  }
}
Пример #2
0
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);
}