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 &
# P4 s) ]5 r6 N" E0 B$ C5 KITU-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,
% [% \% ~! x& k8 f5 J5 _Scalable High, and Scalable High Intra profiles). It enables the construction of SVC bitstreams that
( L# a( v+ {5 G$ R3 x, ?contain reduced bit rate substreams. The substreams can be extracted from the complete bitstream,
thereby providing scalability in terms of bit rate, decoding complexity, and frame rate, spatial
. G- J  t; L% R, n  dresolution, or quality. In typical cases, one or more of the substreams of the SVC bitstream will be
, ?3 i" }; W7 [fully compatible with ordinary AVC decoders. Frame rate scalability (also known as temporal
  i/ R. }  Q* w9 hscalability) or spatial scalability refers to the presence of a substream with a lower sampling rate
6 T$ R' E- k* [) ~6 P0 K% Vthan 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
( Z4 W  t( N2 r+ h) M  Z0 cbit rate with a correspondingly lower quality.
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. P/ E# o$ O  J8 J: n[ 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，
" U2 w9 g' {# v9 ~% s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，
讓需要認識、了解此種技術的同好們可以獲得良好的資訊。