[Openicc] review of new wide gamut editing space
ku.b at gmx.de
Wed Mar 21 10:05:22 PDT 2012
Am 21.03.12, 17:56 +0100 schrieb Jan-Peter Homann:
> Hello to all,
> Working with wide Gamut Images makes oonly sense with 16 Bit data.
We need as well a intermediate space for handing off 8-bit data. That is
already used in per window colour correction inside e.g. ICC Examin.
> In this case the question of Gamma 1,8 2,2 sRGB or L* is not problem.
> ProPhoto RGB standardized through ISO and Thousand users of Adobe Photoshop
> and Lightroom working with is successfully as an intermediate step between
> vendor specific RAW and outputspaces like e.g. sRGB.
They can. But we can not redistribute ProPhoto RGB due to the old ICC
license. That is a known issue. I mentioned it the day before you arrived
to ICC in Munich.
> I don´t see the need that the Open Source Community would need an extra wide
> gamut space.
The need for a 8-bit space and a profile licensed after the ICC v2 license
made this call.
> Am 21.03.12 17:42, schrieb Kai-Uwe Behrmann:
>> some software projects want to preserve wide gamut data like originating
>> from cameraRAW. ProPhotoRGB, which's gamut appears quite reasonable,
>> specifies unfortunately a gamma of 1.8, which is not good for 2.2/sRGB
>> style display systems. Ideally we find a colour space to use as a
>> intermediate space for displaying and storage for inclusion into the
>> OpenICC profile collection.
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