Results 261 to 270 of about 1,264,275 (326)

Predictive multiple description coding using coset codes

The 8th International Conference on Communication Systems, 2002. ICCS 2002., 2003
Multiple Description (MD) coding of predictively coded sources is of practical interest in several multimedia applications such as redundant storage of video/audio data, and real-time video/audio telephony. A key problem associated with predictive MD coding is the occurrence of predictive mismatch.
A. Jagmohan, A. Sehgal, N. Ahuja
openaire   +1 more source

On the Role of the Refinement Layer in Multiple Description Coding and Scalable Coding

IEEE Transactions on Information Theory, 2011
Jun Chen, Haim Henri Permuter
exaly   +2 more sources

Multiple Description Coding using Rotated Permutation Codes

Data Compression Conference (DCC'06), 2006
Summary form only given. This paper proposes a technique that would address the problem of designing multiple description source codes for J channels. Instead of implementing optimal combining we propose to simply average the decoded output of the individual channels and then adjust the length of the resulting vector based on a theoretical analysis ...
N. Wernersson, M. Skoglund
openaire   +1 more source

Distributed multiple description image coding

2009 IEEE International Workshop on Multimedia Signal Processing, 2009
In this paper a new method for robust image transmission over lossy channels using distributed multiple description coding is presented. We propose an efficient yet a simple method for encoding each description from multiple description scalar quantizer by exploiting the correlation information among descriptions. In this way the correlated information
Muhammad Majid, Charith Abhayaratne
openaire   +1 more source

Layered multiple description video coding

2008 9th International Conference on Signal Processing, 2008
In this paper, a two description layered video coding scheme is proposed to provide robust video transmission over unreliable networks based on the previous multiple description image coding framework, layered multiple description coding. A wavelet transformed frame is first decomposed to two subframes. These two subframes are then separately performed
null Jing Chen, null Canhui Cai
openaire   +1 more source

Error-Resilient Multiple Description Coding

IEEE Transactions on Signal Processing, 2008
In the multiple description coding (MDC), the source is decomposed into two or more descriptions, and then transmitted over on/off channels. At the receiver end, each description can be reproduced with acceptable side distortion; reconstructed signals with lower central distortion can be accomplished by exploiting more descriptions.
null Rui Ma, F. Labeau
openaire   +1 more source

Optimal multiple description subband coding

Proceedings 1998 International Conference on Image Processing. ICIP98 (Cat. No.98CB36269), 2002
Multiple description coding refers to encoding an information source into multiple bitstreams, in a way that various levels of tradeoff between decoding quality and channel protection can be supported. This paper addresses the design of two-channel orthonormal filter banks to optimize the redundancy rate-distortion performance of multiple description ...
null Xuguang Yang, K. Ramchandran
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Structure unanimity multiple description coding

Signal Processing: Image Communication, 2007
A novel multiple description coding framework, called structure unanimity multiple description coding, is proposed in this paper. Each wavelet coefficient is first decomposed into an odd position coefficient made from the bits in the odd positions and an even position coefficient made from the bits in the even positions. These two types of coefficients
Canhui Cai, Jing Chen, Sanjit K. Mitra
openaire   +1 more source

Multiple description image coding using several multiple description scalar quantizers

SPIE Proceedings, 2009
In this paper a multiple description coding (MDC) that uses more than one multiple description scalar quantizer (MDSQ) is presented. The MDSQ merging constraints for joint decoding of descriptions obtained using side quantizers from different MDSQs are presented.
Muhammad Majid, Charith Abhayaratne
openaire   +1 more source

Balanced Multifilter Banks for Multiple Description Coding

IEEE Transactions on Image Processing, 2011
The parametrization for one kind of multifilter banks generating balanced multiwavelets is presented in this paper, in which two lowpass filters are flipping filters, and two highpass filters have linear phase. Based on these parametric expressions, some balanced multiwavelets and analysis-ready multiwavelets are constructed, which are symmetric, or ...
Baobin, Li, Lizhong, Peng
openaire   +2 more sources