/**
* Test of Orientation and script detection (OSD).
*
* @throws Exception while processing the image.
*/
@Test
public void testOSD() throws Exception {
logger.info("OSD");
int expResult = TessPageSegMode.PSM_AUTO_OSD;
IntBuffer orientation = IntBuffer.allocate(1);
IntBuffer direction = IntBuffer.allocate(1);
IntBuffer order = IntBuffer.allocate(1);
FloatBuffer deskew_angle = FloatBuffer.allocate(1);
File tiff = new File(this.testResourcesDataPath, "eurotext.tif");
BufferedImage image =
ImageIO.read(new FileInputStream(tiff)); // require jai-imageio lib to read TIFF
ByteBuffer buf = ImageIOHelper.convertImageData(image);
int bpp = image.getColorModel().getPixelSize();
int bytespp = bpp / 8;
int bytespl = (int) Math.ceil(image.getWidth() * bpp / 8.0);
TessAPI1.TessBaseAPIInit3(handle, datapath, language);
TessAPI1.TessBaseAPISetPageSegMode(handle, expResult);
int actualResult = TessAPI1.TessBaseAPIGetPageSegMode(handle);
logger.info("PSM: " + Utils.getConstantName(actualResult, TessPageSegMode.class));
TessAPI1.TessBaseAPISetImage(
handle, buf, image.getWidth(), image.getHeight(), bytespp, bytespl);
int success = TessAPI1.TessBaseAPIRecognize(handle, null);
if (success == 0) {
TessAPI1.TessPageIterator pi = TessAPI1.TessBaseAPIAnalyseLayout(handle);
TessAPI1.TessPageIteratorOrientation(pi, orientation, direction, order, deskew_angle);
logger.info(
String.format(
"Orientation: %s\nWritingDirection: %s\nTextlineOrder: %s\nDeskew angle: %.4f\n",
Utils.getConstantName(orientation.get(), TessOrientation.class),
Utils.getConstantName(direction.get(), TessWritingDirection.class),
Utils.getConstantName(order.get(), TessTextlineOrder.class),
deskew_angle.get()));
}
assertEquals(expResult, actualResult);
}
