c# - Separation of background/foreground layers in a scanned document -


i need automatically remove mildly colored background of scanned document image ocr.

scantailor open source c++ gui-based app background separation among other things, cannot figure out how run last step removes background.

ideally, find code , either:

  1. port part c#
  2. modify c++ respond command line execution, performing step on given image

can me understand how can either?
or know other libraries can this? (any language/platform acceptable)

you referring thresholding, despeckling , noise removal techniques necessary in ocr applications.

the quality of results depends many different factors -

print quality of original scan quality image resolution background colours , patterns used. noise , other marks.

you may find ievolution.net library @ http://www.hi-components.com/nievolution.asp useful. has many image processing functions play with.

there many commercial engines available. there no 1 perfect function solve image processing problems. must adapt functions , parameter match images. http://www.recogniform.com/thresholding.htm

a google search show lots of results.


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