First you must make sure that the backend you are using supports the gamma table options. Some do not, and just have brightness/contrast type controls.
allan On Tue, Jul 20, 2010 at 6:43 PM, Grant <emailgrant at gmail.com> wrote: > Since my scans are for on-screen display only, I'd like to use a gamma > table in place of an ICC profile. ?It sounds like I need to determine > values for gamma, shadow, and highlight so gamma4scanimage can > generate the gamma table. ?How can I determine those values? ?Am I > supposed to scan targets? > > - Grant > > -- > sane-devel mailing list: sane-devel at lists.alioth.debian.org > http://lists.alioth.debian.org/mailman/listinfo/sane-devel > Unsubscribe: Send mail with subject "unsubscribe your_password" > ? ? ? ? ? ? to sane-devel-request at lists.alioth.debian.org > -- "The truth is an offense, but not a sin"
