This setting should only
be changed by a ReadSoft developer.
This setting should only
be changed by a ReadSoft developer.
This flag changes the threshold algorithm used to extract the black/white image from PDF-files.
0 - Local contrast (Bernsen)
1 - Iterative selection
2 - Iterative selection without bin 0
3 - Local adaptive thresholding (Niblack)
4 - Otsu method
5 - A combination of 0 and 1
6 - A combination of 1 and 3
7 - Simplified image statistics (default)