[argyllcms] Re: Camera calibration: LUT only as good as matrix?
- From: Torsten Bronger <bronger@xxxxxxxxxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 03 Jul 2013 21:52:30 +0200
Hallöchen!
Ben Goren writes:
> On Jul 3, 2013, at 12:16 PM, Torsten Bronger <bronger@xxxxxxxxxxxxxxxxxxxxx>
> wrote:
>
>> And correcting exposure and WB are mere linear operations, which
>> are hardly error-prone.
>
> They're linear operations, yes, but how do you determine what the
> linear factors are?
I choose a patch which has a=b=0 in Lab colour space (according to
the spectrometer measurement) and choose the factors so that R=B=G
for this patch.
Tschö,
Torsten.
--
Torsten Bronger Jabber ID: torsten.bronger@xxxxxxxxxxxxxxxxxxxxx
or http://bronger-jmp.appspot.com
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