TONE-CURVE OPTIMIZATION METHOD AND ASSOCIATED VIDEO ENCODER AND VIDEO DECODER

TONE-CURVE OPTIMIZATION METHOD AND ASSOCIATED VIDEO ENCODER AND VIDEO DECODER

A method for generating metadata for use by a video decoder for displaying video content encoded by a video encoder includes: (1) accessing a target tone mapping curve; (2) accessing a decoder tone curve corresponding to a tone curve used by the video decoder for tone mapping the video content; (3)...

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Bibliographische Detailangaben
Hauptverfasser: GODIN, Ian, ZANDIFAR, Ali, CHOUDHURY, Anustup Kumar Atanu, ATKINS, Robin, BEIER, Thaddeus
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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Zusammenfassung:A method for generating metadata for use by a video decoder for displaying video content encoded by a video encoder includes: (1) accessing a target tone mapping curve; (2) accessing a decoder tone curve corresponding to a tone curve used by the video decoder for tone mapping the video content; (3) generating a plurality of parameters of a trim-pass function used by the video decoder to apply after applying the decoder tone curve to the video content, wherein the parameters of the trim-pass function are generated to approximate the target tone curve with the combination of the trim-pass function and the decoder tone curve, and (4) generating the metadata for use by the video decoder, including said plurality of parameters of the trim-pass function.