1Page segmentation modes:
2 0 Orientation and script detection (OSD) only.
3 1 Automatic page segmentation with OSD.
4 2 Automatic page segmentation, but no OSD, or OCR.
5 3 Fully automatic page segmentation, but no OSD. (Default)
6 4 Assume a single column of text of variable sizes.
7 5 Assume a single uniform block of vertically aligned text.
8 6 Assume a single uniform block of text.
9 7 Treat the image as a single text line.
10 8 Treat the image as a single word.
11 9 Treat the image as a single word in a circle.
12 10 Treat the image as a single character.
13 11 Sparse text. Find as much text as possible in no particular order.
14 12 Sparse text with OSD.
15 13 Raw line. Treat the image as a single text line,
16 bypassing hacks that are Tesseract-specific.
17