Page segmentation modes:
- 0 = Orientation and script detection (OSD) only.
- 1 = Automatic page segmentation with OSD.
- 2 = Automatic page segmentation, but no OSD, or OCR
- 3 = Fully automatic page segmentation, but no OSD. (Default)
- 4 = Assume a single column of text of variable sizes.
- 5 = Assume a single uniform block of vertically aligned text.
- 6 = Assume a single uniform block of text.
- 7 = Treat the image as a single text line.
- 8 = Treat the image as a single word.
- 9 = Treat the image as a single word in a circle.
- 10 = Treat the image as a single character.