fgbg-sep

The --fgbg-sep switch is off by default. If you turn it on, then it forces segmentation of image-only ("scanned image") PDF pages.

Image-only PDF pages are typically created by scanner applications. The use of this switch causes such pages to be segmented. The alternative is to have them photo-encoded. The segmenter has many switches, which can be adjusted by using the --profile switch.

 

Please note that the --fgbg-sep switch may harm the quality of photo pages.