[sane-devel] gamma tables

[Grant]

> 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

Hi Allan,

I can use either the epson2 backend or epkowa and I think one or the
other supports gamma tables.  Can you tell me how to determine the
gamma, shadow, and highlight values?

- Grant


>> 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