Ren? Rebe wrote: > Hi, > > now that was a fast reply :-) > > On 17.12.2007, at 10:31, Alessandro Zummo wrote: > >> On Mon, 17 Dec 2007 10:29:03 +0100 >> Ren? Rebe <rene at exactcode.de> wrote: >> >>> Hey Alessandro, >>> >>> I just spotted the infrared option. I wonder how you output the >>> infra- >>> red >>> data? >> >>> In the Avision backend I recently added infrared support but so far I >>> just output two frames, one with the infra-red channel(s) and the >>> other >>> one with the ordinary image data. >>> >>> What is your backend doing? >> >> 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. > > 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. > > We should take that into account before adding some official > frame format to the SANE stanard. >
The inability of the SANE standard to accept an IR channel is something that came up at over seven years ago on this list!!! Perhaps one day I will be able to dump Vuescan for something that is open source. However given that I have been waiting seven years for this and SANE still has not got around to including the ability to scan the IR channel in the standard I am not holding my breath. In the meantime my copy of Vuescan is one of the best software purchases I have ever made. JAB. -- Jonathan A. Buzzard Email: jonathan (at) buzzard.me.uk Northumberland, United Kingdom. Tel: +44 1661-832195
