PDFThresholdMethod

Description

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.

Valid values

  • 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)