Tesseract

Represents orientation that the page would need to be rotated so that .

Represents the possible page layou analysis modes.

Determines how Pix of a PixArray structure are accessed.

What colour pixels should be used for the outside?

Represents the method used to rotate an image.

Provides a way to set environment variables for the Tesseract and Leptonica libraries.

The text lines are read in the given sequence.

The grapheme cluster within a line of text are laid out logically in this direction, judged when looking at the text line rotated so that Orientation is "page up".