[sane-devel] Descreen feature

[Bertrik Sikken]

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.

Regards,
Bertrik