[sane-devel] gamma tables

[Grant]

> Experiment.
>
> allan

I think I'd rather have a table/profile I can rely on, knowing it was
created by a standardized and somewhat automated process like scanning
color targets to create an ICC profile.  If I were to do that, would I
have obtained the same benefit provided by gamma tables, or is it
beneficial to use both in conjunction?

- 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