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Layered multiple description video coding using dual-tree discrete wavelet transform and H.264/AVC

MULTIMEDIA TOOLS AND APPLICATIONS 2016年第5期75卷 2801-2814页

作者： Chen, Jing Cai, Canhui Li, Li Li, Cuihua Xiamen Univ Sch Informat Sci & Engn Xiamen Peoples R China Huaqiao Univ Sch Informat Sci & Engn Xiamen Peoples R China

A novel hybrid layered multiple description video coding (HLMDVC) algorithm is proposed to provide a robust and flexible video transmission via unreliable networks, like Internet or the wireless network. First, the input video sequence is encoded by a standard H.264/AVC encoder in low bit rate to form the base layer, which is then duplicated to each description. Second, the 3D dual-tree discrete wavelet transform is performed on the difference between the reconstructed base layer and the input sequence to produce four wavelet coefficient trees. Then the noise shaping is used to reduce the redundancy of these coefficient trees. After that, the four sparse wavelet coefficient trees are separately encoded by 3D-SPIHT encoders. The resulted four bitstreams are partitioned into two groups, separately forming enhancement layers of two descriptions. The redundancy of the proposed multiple description video coding scheme can be easily adjusted by changing the bitrate of the base layer to fit for different transmission channels. The directional selectivity feature of 3D dual-tree discrete wavelet transform frees the enhancement layer coding from the time consuming motion estimation, such that no mismatch happens and the coding efficiency is improved. Simulation results have shown that the quality of the reconstructed video of the proposed HLMDVC algorithm is superior to that by the state-of-the-art multiple description video coding methods.

关键词： multiple description coding Video coding Layered coding Dual-tree discrete wavelet transform H.264/AVC

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Standard Compliant multiple description coding Based on Regions of Interest

Standard Compliant Multiple Description Coding Based on Regi...

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27th Chinese Control Conference

作者： Rener, Yang Ken, Chen Wei, Jin Ningbo Univ Fac Informat Sci & Engn Ningbo 315211 Zhejiang Peoples R China

ISBN: (纸本)9787900719706

A standard compliant multiple description coding based on regions of interest is presented for protecting a region of interest (ROI) in an image sent over lossy communication networks. The multiple description coding is introduced based on multiple-path transmit framework, which can offer a variety of tradeoff between transmission robustness and code efficiency, and the original model can be achieved by generating several subsets from the original image data. The proposed method exploit polyphase downsampling to split the original image date multiple descriptions. For the sake of protection, a higher bit rate is adopted in coding the ROI. Simulation shows the proposed method can offers intrinsic resiliency in case of loss in addition to effective ROI protection.

关键词： multiple description coding Regions of Interest(ROI) multiple-path transmission

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An improvement to multiple description transform coding

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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2002年第11期50卷 2843-2854页

作者： Wang, Y Reibman, AR Orchard, MT Jafarkhani, H Polytech Univ Brooklyn NY 11201 USA AT&T Labs Res Florham Pk NJ 07932 USA Rice Univ Dept Elect & Comp Engn Houston TX 77005 USA Univ Calif Irvine Dept Elect & Comp Engn Ctr Pervas Commun Irvine CA USA

A multiple description transform coding (MDTC) method has been reported previously. The redundancy rate distortion (RRD) performance of this coding scheme for the independent and identically distributed (i.i.d.) two-dimensional (2-D) Gaussian source has been analyzed using mean squared error (MSE) as the distortion measure. At the small redundancy region, the MDTC scheme can achieve excellent RRD performance because a small increase in redundancy can reduce the single description distortion at a rate faster than exponential, but the performance of MDTC becomes increasingly poor at larger redundancies. This paper describes a generalization of the MDTC (GMDTC) scheme, which introduces redundancy both by transform and through correcting the error resulting from a single description. Its RRD performance is closer to the theoretical bound in the entire range of redundancy. Analysis both for a single pair of variables and for multiple variables is presented.

关键词： error resilience multiple description coding source coding

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multiple-description coding for overlay network streaming

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IEEE MULTIMEDIA 2007年第1期14卷 74-82页

作者： Wang, Guijin Futemma, Satoshi Itakura, Eisaburo Sony Corp Informat Technol Lab Tokyo Japan Sony Corp IPELA Div Tokyo Japan

We consider the problem of distributing video data from one sender to a population of interested clients. Deploying an overlay network with an application-layer multicast, we propose a scalable forward-error-correctio... 详细信息

关键词： Video Packetization Overlay Network multiple description coding Forward Error Correction And FEC

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Predictive side decoding for human-centered multiple description image coding

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EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING 2020年第1期2020卷 1-14页

作者： Xu, Yuanyuan Hohai Univ Coll Comp & Informat 8 Fo Cheng Rd Nanjing Peoples R China

multiple description coding (MDC) provides a favorable solution for human-centered image communication, which takes into account people's varying watching situations as well as people's demand for real-time image display. As an effective technique for MDC, three-description lattice vector quantization (3D-LVQ) is considered for image coding in this paper. Based on intra- and inter-correlation in the 3D-LVQ index assignment as well as wavelet intra-subband correlation, a novel predictive decoding method for 3D-LVQ-based image coding is proposed to enhance side decoding performance, which attempts to predict lost descriptions (sublattice points) in a good way for better reconstructions of wavelet vectors (fine lattice points) in the side decoding. Experimental results validate effectiveness of the proposed decoding scheme in terms of rate-distortion performance.

关键词： Image coding Human-centered computing multiple description coding Lattice vector quantization

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Rate controlled redundancy-adaptive multiple description video coding

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SIGNAL PROCESSING-IMAGE COMMUNICATION 2011年第4-5期26卷 205-219页

作者： Kamnoonwatana, Nawat Agrafiotis, Dimitris Canagarajah, Nishan Univ Bristol Dept Elect & Elect Engn Bristol BS8 1UB Avon England

This paper proposes a rate controlled redundancy-adaptive multiple description video coding method. The method adjusts the level of redundancy allocated to each macroblock based on an end to end distortion model that takes into account the effects of error propagation and concealment. Rate control at the macroblock level ensures that the total bit rate of all descriptions does not exceed the target rate. Results show that the proposed MDC codec can adapt very well to changing transmission conditions. Gains of up to 14 dB at high packet error rates (low SNR) were recorded when coupled with a MIMO architecture, with no perceptible performance deficit at low packet error rates (high SNR). 2011 Elsevier B.V. All rights reserved.

关键词： multiple description coding Error resilience Wireless multimedia communication Compression and coding

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Visual saliency based redundancy allocation in HEVC compatible multiple description video coding

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MULTIMEDIA TOOLS AND APPLICATIONS 2018年第16期77卷 20955-20977页

作者： Majid, Muhammad Owais, Muhammad Anwar, Syed Muhammad Univ Engn & Technol Dept Comp Engn Taxila Pakistan Univ Engn & Technol Dept Software Engn Taxila Pakistan

Video delivery over error prone channels suffer from packet loss, which significantly deteriorates the reconstructed video quality. multiple description coding (MDC) is an effective error resilient coding scheme for transmission of video over unreliable networks, where video is encoded into multiple descriptions having redundancy between them. The amount of redundancy between these descriptions has an important role in MDC, because it provides error resilience. In this paper, a new redundancy allocation scheme using visual saliency model is presented with an aim of achieving high decoding quality, when one or more than one descriptions are received at the decoder. The proposed MDC method splits the input video sequence into even and odd subsequences, which are independently encoded by using high efficiency video coding (HEVC) encoder. The missing frames in each description are predicted by using pixel interpolation and motion interpolation. The residual information is generated by using the interpolated frame and its adjacent frame from the other description, which represents the redundancy in each description. Residual information is encoded based on a visual saliency mask, which is generated using a global contrast based visual saliency model. In this work, two different modes are proposed for visual saliency based redundancy allocation to provide better perceptual quality, while decoding the descriptions. The proposed scheme is implemented on HEVC reference software HM 16.2 and compared with two state-of-the-art temporal subsampling based multiple description video coding methods. Experiments show that the proposed method performs better than the reference methods, both in lossless and packet erasure channel conditions.

关键词： multiple description coding HEVC Visual saliency model Error resilience Motion interpolation

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Allpass delay chain-based IIR PR filterbank and its application to multiple description subband coding

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IEEE TRANSACTIONS ON SIGNAL PROCESSING 2002年第4期50卷 814-823页

作者： Shankar, B Makur, A Indian Inst Sci Dept Elect Commun Engn Bangalore 560012 Karnataka India

A class of infinite impulse response (IIR) perfect reconstruction (PR) filterbank is obtained with an allpass delay chain and finite impulse response (FIR) matrices at the analysis side. Such a formulation leads to a filterbank that can be optimized to any desired response. For a first-order allpass, the synthesis bank becomes FIR. Design examples showing warping of the frequency scale and filters with unequal passband widths are presented. The latter part of the work deals with designing a filterbank for a multiple description coding scenario. This is achieved in two parts: by, obtaining the MMSE synthesis bank for a given analysis bank and channel state and by optimizing the analysis response to minimize the average distortion in the presence of channel erasures and quantization. The proposed IIR filterbank, as well as the well-known FIR paraunitary filterbank, are optimized for various channels, and their performances for the two-channel case have been compared with the derived optimal performance.

关键词： allpass function IIR filterbank multiple description coding subband coding

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Error Resilient multiple description coding for Mobile Sign Language Communication

Error Resilient Multiple Description Coding for Mobile Sign ...

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International Congress on Image and Signal Processing

作者： Xinzhu Yang School of Mechanical Engineering Lanzhou Jiaotong University Lanzhou China

ISBN: (纸本)9781479927654

The primary challenge to perform mobile sign language communication over cellular network is overcoming the data loss. We proposed a new multiple descriptions coding (MDC) for protecting regions of interest (ROI) in sign language video by combining the advantages of MDC and ROI coding. The set partitioning in hierarchical trees (SPIHT) algorithm is used to generate MDC streams, and these streams are divided into ROI streams and background (BG) streams. For protection of ROI, our method assigns different redundant trees to the two kinds streams, the fully coded trees are assigned as the redundant trees of the ROI streams, the partially coded trees are assigned as the redundant trees of the BG streams. Experiment results show that our method can further increase the reconstruction quality of the ROI over noisy channels compared with other regions of interest multiple description coding methods.

关键词： regions of interest multiple description coding noisy channels sign language video

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Poliphase Subsampling multiple description coding Using Robust Edge-Preserving Interpolation

Poliphase Subsampling Multiple Description Coding Using Robu...

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European Signal Processing Conference

作者： Stefania Colonnese Nicolas Herrero Lorenzo Rossi Gaetano Scarano INFOCOM Dep.t Universita "La Sapienza" di Roma Telefonica Research

multiple description coding (MDC) is aimed at achieving transmission diversity for error resilient purposes by transmitting different coded descriptions of the same data. In this paper we analyze a poliphase subsampling MDC technique implemented by pre-processing and post-processing stages of a H.264/AVC standard compliant encoder and decoder. The pre-processing step performs a suitable interleaving that builds a synthetic sequence where each frame carries different subsampled frames of the original sequence. The synthetic sequence is ordinarily encoded and transmitted. At the receiver side, the H.264 decoder performs error concealment exploiting the multiple data descriptions, and the de-interleaving stage generates a decoded version of the original sequence. A robust restoration algorithm based on edge-preserving interpolation is then applied. Simulations show that the analyzed scheme improves the decoded video sequence quality both from an objective and from a subjective point of view.

关键词： edge protection diversity reception multiple description coding multiple domain controllers CCL22 gene Interpolation ORIGINAL Data description decoders Pretreatment point of view stream stage FRAMES

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