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Quality Scalable Coding

 
: Marpe, D.; Winken, M.; Schwarz, H.; Wiegand, T.

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Frontpage ()

WO 2006EP10297 A: 20061025
WO 2008049446 A1: 20080502
Englisch
Patent, Elektronische Publikation
Fraunhofer HHI ()

Abstract
A more efficient way of addressing different bit-depths, or different bit-depths and chroma sampling format requirements is achieved by using a low bit-depth and/or low-chroma resolution representation for providing a respective base layer data stream representing this low bit-depth and/or low-chroma resolution representation as well as for providing (134) a higher bit-depth and/or higher chroma resolution representation so that a respective prediction residual may be encoded in order to obtain a higher bit-depth and/or higher chroma resolution representation. By this measure, an encoder (100) is enabled to store a base-quality representation of a picture or a video sequence, which can be decoded by any legacy decoder or video decoder, together with an enhancement signal for higher bit-depth and/or reduced chroma sub-sampling, which may be ignored by legacy decoders or video decoders.

: http://publica.fraunhofer.de/dokumente/N-201974.html