I believe that most backends are doing no transformation at all. Since
most backends are reverse engineered, I think we consider ourselves
lucky just to get image data out of the scanner. If the blacks look
black, and the whites look white, we ship it :)
allan
On Sun, Jul 5, 2020 at 10:38 AM
Hi,
many SANE backends provide gamma correction options, but I could not find any
information about the default color space in which scan data are being sent to
sane_read(). I mean, if there is no custom gamma table used, then a backend
should be able to use its knowledge about a scanner’s
