On Saturday 03 December 2005 01:20, Ren? Rebe wrote: > Hi, > > On Friday 02 December 2005 23:08, Oliver Schwartz wrote: > > On Wednesday 30 November 2005 21:12, St?phane VOLTZ wrote: > > > since Pierre has added lineart emulation. > > > > I'll need to add something similar to the snapscan backend in the long > > run, since some new scanners don't support lineart mode. It still > > would be nice to have lineart for OCR etc. on those scanners. > > > > Would it be a good idea to have a common library for the conversation > > from grayscale to lineart? Is it used in any other backend? > > Same applies to interpoliation. I have a huge patch in my inbox that > adds scaling to my avision backend just because some el-cheapo OEM > scanners do not appear to deliver any resolution - and for the highest > resolution of 2400 dpi have a memory shortage and thus the author > implemented amorphic scans @1200x2400 with software scaling to > 2400x2400 to compensate this. > > In the long run some plugin subsystem (think ALSA) to plug scalers > together would be a big win. Trivially one could implement this by > adding a backend (simillar to the dll one) with that functionality > shadowing any other backend.
Well, also the plustek backends do have such scaling/interpoliation stuff, maybe I'll find some time to make a proposal for such a lib Gerhard
