[sane-devel] RGBI file format

[m. allan noah]

On Wed, May 26, 2010 at 6:26 AM, Enno Fennema <e.fennema at tiscali.nl> wrote:
> I am looking for a good file format to save scanned RGBI images, that is
>  like a RGBA file but an infrared instead of a transparency byte for
> each pixel. Sane once (and maybe still) transfered RGBI info but I am
> not sure it was ever written to a file.

There are some commented out FRAME types in sane-backends. They are
not officially supported, as someone may come up with a better
mechanism. I don't know of any image type that would support RGBI,
though it might be possible to use one of the more extensible formats
like TIFF to store an RGB and IR frame separately.

>
> An additional requirement is that the file must specify the resolution
> it was scanned at.

TIFF supports that.

allan
-- 
"The truth is an offense, but not a sin"