Motion-compensated temporal filtering within the H.264/AVC standard
Akyol, E.
Tekalp, A.M.
Civanlar, M.R.
Coll. of Eng., Koc Univ., Istanbul, Turkey;
This paper appears in: Image Processing, 2004. ICIP '04. 2004 International Conference on
Publication Date: 24-27 Oct. 2004
Volume: 4,
On page(s): 2291- 2294 Vol. 4
ISSN: 1522-4880
ISBN: 0-7803-8554-3
INSPEC Accession Number: 8470383
Digital Object Identifier: 10.1109/ICIP.2004.1421556
Current Version Published: 2005-04-18
Abstract
We propose an adaptive motion-compensated temporal filtering (MCTF) structure to provide efficient temporal scalability within the H.264/AVC video compression standard. MCTF has traditionally been considered within fully scalable wavelet video coders. However, motion-compensated simple 5/3 lifted temporal wavelet filtering suffers at scene changes, as well as occlusion regions. We note that the bi-directional motion compensation mode in the H.264 standard is best equipped with the state of the art adaptive features such as adaptive block size, mode switching between forward, backward and bidirectional prediction and in-loop deblocking filter. Hence, we propose a GOP structure to implement block-based adaptive MCTF within the H.264 syntax using stored B-pictures, similar to the motion-compensated 5/3 wavelet filtering. We provide experimental results to compare the results of our proposed codec with those of other scalable wavelet video coders which use MCTF. It is also possible to employ the proposed adaptive MCTF structure within fully scalable wavelet video codecs.
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