Journal ArticleDOI
Video coding with optimal inter/intra-mode switching for packet loss resilience
TLDR
This work proposes an algorithm to optimally estimate the overall distortion of decoder frame reconstruction due to quantization, error propagation, and error concealment and recursively computes the total decoder distortion at pixel level precision to accurately account for spatial and temporal error propagation.Abstract:
Resilience to packet loss is a critical requirement in predictive video coding for transmission over packet-switched networks, since the prediction loop propagates errors and causes substantial degradation in video quality. This work proposes an algorithm to optimally estimate the overall distortion of decoder frame reconstruction due to quantization, error propagation, and error concealment. The method recursively computes the total decoder distortion at pixel level precision to accurately account for spatial and temporal error propagation. The accuracy of the estimate is demonstrated via simulation results. The estimate is integrated into a rate-distortion (RD)-based framework for optimal switching between intra-coding and inter-coding modes per macroblock. The cost in computational complexity is modest. The framework is further extended to optimally exploit feedback/acknowledgment information from the receiver/network. Simulation results both with and without a feedback channel demonstrate that precise distortion estimation enables the coder to achieve substantial and consistent gains in PSNR over known state-of-the-art RD- and non-RD-based mode switching methods.read more
Citations
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Journal ArticleDOI
Video coding with H.264/AVC: tools, performance, and complexity
Jörn Ostermann,J. Bormans,P. List,Detlev Marpe,Matthias Narroschke,Fernando Pereira,Thomas Stockhammer,Thomas Wedi +7 more
TL;DR: This paper provides an overview of the new tools, features and complexity of H.264/AVC.
Journal ArticleDOI
Video Compression - From Concepts to the H.264/AVC Standard
Gary J. Sullivan,Thomas Wiegand +1 more
TL;DR: This paper starts with an explanation of the basic concepts of video codec design and then explains how various features have been integrated into international standards, up to and including the most recent such standard, known as H.264/AVC.
Journal ArticleDOI
H.264/AVC in wireless environments
TL;DR: An overview over the tools which are likely to be used in wireless environments and discusses the most challenging application, wireless conversational services in greater detail is provided.
Journal ArticleDOI
Joint source channel rate-distortion analysis for adaptive mode selection and rate control in wireless video coding
TL;DR: An analytic solution for adaptive intra mode selection and joint source-channel rate control under time-varying wireless channel conditions is derived and significantly improves the end-to-end video quality in wireless video coding and transmission.
Journal ArticleDOI
Transporting real-time video over the Internet: challenges and approaches
TL;DR: This paper designs a framework for transporting real-time Internet video, which includes two components, namely, congestion control and error control, and suggests that the synergy of both transport and compression could provide good solutions.
References
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RTP: A Transport Protocol for Real-Time Applications
TL;DR: RTP provides end-to-end network transport functions suitable for applications transmitting real-time data over multicast or unicast network services and is augmented by a control protocol (RTCP) to allow monitoring of the data delivery in a manner scalable to large multicast networks.
Journal ArticleDOI
Rate-distortion optimization for video compression
Gary J. Sullivan,Thomas Wiegand +1 more
TL;DR: Based on the well-known hybrid video coding structure, Lagrangian optimization techniques are presented that try to answer the question: what part of the video signal should be coded using what method and parameter settings?
Journal ArticleDOI
Error control and concealment for video communication: a review
Yao Wang,Qin-Fan Zhu +1 more
TL;DR: In this paper, a review of error control and concealment in video communication is presented, which are described in three categories according to the roles that the encoder and decoder play in the underlying approaches.
Journal ArticleDOI
H.263: video coding for low-bit-rate communication
TL;DR: This article provides an overview of H.263, the new ITU-T Recommendation for low-bit-rate video communication, which specifies a coded representation for compressing the moving picture component of audio-visual signals at low bit rates.