For better results, make sure:
- You keep black edges around the book.
- You keep up and down edges symmetrical.
Finger hiding: Up and down edges are symmetrical
- The document has a margin in which your fingers can fit. Indeed, without margin, the result of the option 'Finger hiding' cannot be guaranteed, because the fingers that overlap text or image are notdetected.
- To avoid pages with colored drawings.
Finger hiding: avoid pages with colored drawings