On Mon, 17 Dec 2007 10:46:24 +0100 Ren? Rebe <rene at exactcode.de> wrote:
> > alongside RGB data and this is why you need my program tiffscan > > to read it. that's why the bakend is experimental and not > > suited for mainstream sane. I defined a new frame type, > > SANE_FRAME_RGBX for it. > > Ah, ok. We recently added SANE_FRAME_JPEG, and in that > discussion I proposed GRAYI and RGBI. I tried to propose it a year ago but there was no consesus about changing current sane vs developing next generation sane. given I have no time to fork sane i decided to go on my own. > > What is the data format of your scanner? The Avision based ones > return a infra-red value for each R, G and B sensor, not just one > value per pixel, so I get: R,RI,G,GI,B,BI. I can imagine other devices > just return one I sample per pixel. I just get RGBI. > We should take that into account before adding some official > frame format to the SANE stanard. I guess you'll need SANE_FRAME_RIGIBI :-D I can happily implement it in tiffscan and store the three extra channels in the tiff file, but I doubt any infrared cleaning program currently handles it :) You can check if vuescan works on your avision and see how it saves the "raw data" file (it's just a tiff). -- Best regards, Alessandro Zummo, Tower Technologies - Torino, Italy http://www.towertech.it
