Changes between Version 2 and Version 3 of Ticket #9085, comment 18


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Timestamp:
Mar 21, 2021, 7:50:53 AM (5 years ago)
Author:
Balling

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  • Ticket #9085, comment 18

    v2 v3  
    2020As to why those are different in Intel... RGB are not between 0 and 1, that is why. Nonlinear RGB' in PhotoYCC are from -0.43357 to 1.402278, while Linear RGB values are from -0.20 to 2.00.
    2121
    22 The decoding equestions are different, because a) sRGB/(previously NIF) is EOTF in by itself, there is no EOTF for PhotoYCC. THERE also exists a possibility to further color manage it with Kodak ICC profiles, I can attach them here. But that was in .pcd files, JPEG used already defined viewing conditions as specified in http://www.graphcomp.com/info/specs/livepicture/fpx.pdf
     22The decoding equations are different, because a) sRGB/(previously NIF) is EOTF in by itself, there is no EOTF for PhotoYCC. THERE also exists a possibility to further color manage it with Kodak ICC profiles, I can attach them here. But that was in .pcd files, JPEG used already defined viewing conditions as specified in http://www.graphcomp.com/info/specs/livepicture/fpx.pdf
    2323
    2424There are NIF and PhotoYCC there.