[email protected] said: > I recall that someone suggested that there should be something like a > "mid-end" (like saned) that does the correction. This would keep > front-ends simple and provide a moer uniform way to access features > like IR-correction. =
A front end for scanning negatives and slides is not a particularly good front end for scanning a sheet of A4 paper. The two are wildly different. A library perhaps that front ends can use, but we do not need new layers. > I do not agree that there is little need for correction. When I try to > correct using the simple GIMP-plugin, I find that both brightness and > contrast of the IR-chanel are critcal and they must be set for each > image separately. Also, the exposure for the IR-chanel seems > important. = All that does is indicate weakness in the current algorithms. Clearly if a commercial package the majority of which customers are buying it because it is a *better* than that provided by the manufacture has exactly three options "light", "medium" and "heavy" for IR cleaning then there is no requirement for anything extra. > Another reason why a mid-end could be better than the front-end is, > that the mid-end can scan always at full bit-resolution (12 bits on > my LS-2000), do the calculations and then round to 8 bits. What the heck are you on about? The front end is *just* as capable of doing this as any mid-end which just adds extra unnecessary complexity. > hm... maybe it's time for me to pick-up programming again... = May I suggest with the strongest possible force that you download Vuescan and try it. I have said it before and I will say it again what Sane needs for filmscanning is a front end that looks and behaves like this. It does *everything* that you need for scanning slides and negatives. I repeat a front end for scanning sheets of A4 paper is not what you want for scanning a slide or negative. The two things are sufficiently different to require different front ends. JAB. -- = Jonathan A. Buzzard Email: jonathan (at) buzzard.me.uk Northumberland, United Kingdom. Tel: +44 1661-832195
