Quote:
Originally Posted by cacapee
Fixing white space marks can be done by using the Trim% feature. Click preview and move the left, top, bottom, right markers so that you crop out what you don't need. You don't have to be very accurate since pdflrf's whitespace removal takes care of the rest.
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A poor quality original jpg is attached. Pdflrf can do little to improve it unless one manually trims the black margins (different for different pages), see the attached lrf file.
After preprocessing with ClearImage (demo version) and Finereader8 (commercial) the jpg is much improved although some black lines at the margin remain (more aggresive preprocessing would remove parts of text as well). Then, pdflrf can be used more effectively.
BTW. The image is a photoscan of a 1914 Russian calendar. I can make a better photo of it by zooming to individual rather than double pages, putting white paper to avoid effects of transparency, etc., but the photo in example is just to make my point about the need for preprocessing.