Re: Typical to/from EXIF conversions

Pavel Zlatovratskii <[email protected]> Sat, 11 Mar 2017 20:05:48 +0300
Newsgroups gmane.comp.graphics.png.general
Organization TB.Budget
Message-ID <[email protected]>
No, writing of gAMA or cHRM does not depend on presence of ICC Profile. 
cHRM and gAMA are fallback for decoders which does not recognise iCCP.

But you are right that it's better get their values from ICC Profile 
(when it's possible) than from EXIF structure.


11.03.2017 16:45, Glenn Randers-Pehrson пишет:
> You might also mention that if the JPEG/TIFF contains an
> ICC profile, don't write cHRM or gAMA in steps 5 and 6.of TIFF->PNG;
> just write an iCCP chunk containing the profile.
>
> Glenn

-- 
Have a nice DOS.

Pavel Zlatovratskii [email protected]; [email protected]


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