[argyllcms] Re: Capture One Profiles
- From: Nikolay Pokhilchenko <nikolay_po@xxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Thu, 11 Jul 2013 13:08:02 +0400
11 July 2013, 12:26 +10:00 Graeme Gill wrote:
>Nikolay Pokhilchenko wrote:
>
>> 1. Balancing the channel multipliers for better interpolation, i.e. "white
>> balancing" the raw data.
>> 2. Spacial computations, including interpolation.
>> 3. Backward application of channel multipliers from the first stage to
>> recover illumination-depended channel values of interpolated image.
>> 4. Applying the camera profile to interpolated image. At this stage image is
>> "absolute colorimetric".
>> 5. Correcting the white balance using chromatic adaptation based on
>> mulitpliers from first point or based on human visual evaluation.
>>
>> As a result we may get an image with both best interpolation and correct
>> chromatic
>> adaptation. I suppose this approach is performed in modern DSLRs and
>> commercial
>> RAW-converters.
>
>This undoes the effect of premature white balancing, but can't correct the
>damage from democratising cross channel contamination.
Thank You, it's clear.
Can You evaluate practical degree of cross-contamination while demosaicing of
RAW shots from popular DSLRs? Is it huge, moderate or negligible?
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