A Hybrid Video Coder Based on Extended Macroblock Sizes, Improved Interpolation, and Flexible Motion Representation

This paper describes a video coding technology proposal submitted by Qualcomm in response to a joint call for proposals (CfP) issued by ITU-T SG16 Q.6 (VCEG) and ISO/IEC JTC1/SC29/WG11 (MPEG) in January 2010. The proposed video codec follows a hybrid coding approach based on temporal prediction, fol...

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Vydané v:IEEE transactions on circuits and systems for video technology Ročník 20; číslo 12; s. 1698 - 1708
Hlavní autori: Karczewicz, Marta, Peisong Chen, Joshi, Rajan L., Xianglin Wang, Wei-Jung Chien, Panchal, Rahul, Reznik, Yuriy, Coban, Muhammed, In Suk Chong
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York IEEE 01.12.2010
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Adaptive motion vector resolution
Automatic voltage control
Codec
Coding
Coding standards
Encoding
Entropy
Filtering
Filtration
geometric motion partitions
Interpolation
MDDT
Proposals
switched interpolation filters with offsets
Transforms
Video codecs
video coding
Video compression
ISSN:1051-8215, 1558-2205
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Shrnutí:This paper describes a video coding technology proposal submitted by Qualcomm in response to a joint call for proposals (CfP) issued by ITU-T SG16 Q.6 (VCEG) and ISO/IEC JTC1/SC29/WG11 (MPEG) in January 2010. The proposed video codec follows a hybrid coding approach based on temporal prediction, followed by transform, quantization, and entropy coding of the residual. Some of its key features are extended block sizes (up to 64 × 64), single pass switched interpolation filters with offsets, mode-dependent directional transforms for intra-coding, luma and chroma high precision filtering, geometric motion partitions, adaptive motion vector resolution and efficient 16-point transforms. It also incorporates internal bit-depth increase and modified quadtree-based adaptive loop filtering. Simulation results are presented to demonstrate the high compression efficiency achieved by the proposed video codec at the expense of moderate increase in encoding and decoding complexity compared to the advanced video coding standard (AVC/H.264). For the random access and low delay configurations, it achieved average bit rate reductions of 30.9% and 33.0% for equivalent peak signal-to-noise ratio, respectively, compared to the corresponding AVC anchors. The proposed codec scored highly in both subjective evaluations and objective metrics and was among the best-performing CfP proposals.
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ISSN:1051-8215
1558-2205
DOI:10.1109/TCSVT.2010.2092614