Scalable Video Coding Shown to be State of the Art

masonchung

Scalable video coding (SVC) was developed by the Joint Video Team (JVT) of ISO/IEC MPEG &
2 x  E3 `8 l8 |/ MITU-T VCEG in a standardization project completed in October 2007. The SVC enhancement of
the AVC core design includes the specification of three scalable profiles (the Scalable Baseline,
+ l; T2 j) Q( k' r* a1 k" ?- [Scalable High, and Scalable High Intra profiles). It enables the construction of SVC bitstreams that
% o/ c: o# {8 r; P" @contain reduced bit rate substreams. The substreams can be extracted from the complete bitstream,
* ^4 w4 g, D; G9 Dthereby providing scalability in terms of bit rate, decoding complexity, and frame rate, spatial
- S2 @  {! y+ hresolution, or quality. In typical cases, one or more of the substreams of the SVC bitstream will be
+ l6 u2 w. t. t9 J  Nfully compatible with ordinary AVC decoders. Frame rate scalability (also known as temporal
/ Q. C+ F' I# Sscalability) or spatial scalability refers to the presence of a substream with a lower sampling rate
2 J# ^& A1 c0 _% q1 hthan the overall bitstream in terms of time or spatial resolution. Quality scalability refers to the
presence of a substream with the same sampling rate as the parent SVC stream, but having a lower
' `) w) v: M' v3 ibit rate with a correspondingly lower quality.


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[ 本帖最後由 masonchung 於 2008-4-12 11:09 PM 編輯 ]

divl

Scalable Video Coding在未來網路通訊上勢必將掀起一股革命，
* M+ }- F0 D0 e4 g( U+ i許多視訊影像實驗室、研究單位無不於此衍伸發展，感謝版主分享此文件，
& B" ~  q7 F# N% j  J# D讓需要認識、了解此種技術的同好們可以獲得良好的資訊。