Ren? Rebe wrote: >> You can use ImageMagick, ExactImage, Gimp, etc. to perform those tasks.
You also might want to take a look at unpaper: http://unpaper.berlios.de/ The algorithms used in unpaper are still very simple (some kind of blurring, a noise-filter, black-area removal, auto-rotation, etc.), but it bundles some useful features for post-processing in a single application. Jens ps. greetings from Helmholtzstr./Charlottenburg :-) > Ren? Rebe ... Sitz: Berlin, Amtsgericht Charlottenburg Ren? Rebe schrieb: > On Friday 27 July 2007 09:39:40 Bertrik Sikken wrote: > >>Quentin Bierent wrote: >> >>>Hi there >>> >>>I've been checking sane from time to time and a key feature is still >>>missing at this time >>>every serious scanner user need descreen feature to get clean scan. >>>Goole shows it's been various requests about this feature (aka detramage) >>> >>>Every other descreen "workaround methods" are quality degrading (blur, >>>despeckle etc etc) only a specific and efficient descreen algorythm >>>(with LPI and screens angles settings) can do a good job for >>>profesionnal quality. >>>This is the only way to get a good resolution scan with a low print >>>quality original (halftone pictures in newspaper can be acquired and >>>smoothed WITHOUT sacrifying resolution and final quality) >>> >>>This feature is available on every serious scanner software (agfa, >>>binuscan...) >>> >>>I will send some examples later. >>> >>>I am aware this feature is tricky to implement but it will for sure >>>lift SANE to new heights... >> >>What you propose sounds much like an image processing step, while >>sane is (currently) more about simply getting the data from the >>scanner. >>Before adding image processing to sane itself, I think there should at >>least be some kind of framework where it can fit in cleanly. > > > This "commercial", "binary only" Windows junk software pieces > also only do blur and re-sharpen and the like. > > You can use ImageMagick, ExactImage, Gimp, etc. to perform those > tasks. > > Yours, >
