نتایج جستجو برای: multiple description coding

تعداد نتایج: 1120561  

2004
J. R. Taal J. A. Pouwelse R. L. Lagendijk

In this paper we present and evaluate a method for video distribution through a peer-to-peer (P2P) network using Multiple Description Coding in a multicast tree. Our method solves the problem of serving many clients with heterogeneous bandwidths. Every node forwards descriptions to other nodes. Nodes that have sufficient bandwidth are then able to receive more descriptions, and thereby to incre...

Journal: :IEEE Trans. Circuits Syst. Video Techn. 2001
Xiaoyi Tang Avideh Zakhor

Multiple description coding (MDC) is an error resilient source coding scheme that creates multiple bitstreams of approximately equal importance. The reconstructed signal based on any single bitstream has an acceptable quality. However, a higher quality reconstruction can be achieved with larger number of bitstreams. We develop a multiple (2) description video coding scheme based on the 3 loop s...

2007
James E. Fowler Béatrice Pesquet-Popescu

The use of wavelets in the broad areas of source coding, communications, and networks is surveyed. Specifically, the impact of wavelets and wavelet theory in image coding, video coding, image interpolation, image-adaptive lifting transforms, multiple-description coding, and joint source-channel coding is overviewed. Recent contributions in these areas arising in the subsequent papers of the pre...

2003
Mohsen Ashourian Yo-Sung Ho

In this paper, we propose a new method for hiding a signature image in the host image. We encode the signature image by a balanced two-description subband coder and embed the descriptions in the different portions of the host image. We split the host image into two images from its even and odd rows, and embed the information of one signature description in the first portion of the host image in...

2003
Joohee Kim Russell M. Mersereau Yücel Altunbasak

This paper presents a TCP-friendly rate allocation algorithm for multiple description coding combined with path diversity. A 3D SPIHT-based multiple description coding is used to generate two independent substreams and each substream is protected with an FEC-based unequal error protection algorithm. In the proposed video streaming framework, two senders simultaneously stream complementary subst...

2006
Jacco R. Taal

In this paper we present a method for Asymmetric Multiple Description Coding (AMDC) using Reed Solomon Channel Codes and Layered Coding. Asymmetric MDC can be used when channel conditions are not uniform. For instance peer-to-peer networks or heterogeneous (wired and wireless) networks may offer different channels with different bandwidths and loss characteristics. The AMDC encoder can be desig...

2008
Adarsh K. Ramasubramonian John W. Woods

We investigate the problem of video multicast in lossy networks using network coding and multiple description codes. The rate allocation for multiple descriptions can be optimized at the source to generate a scalable video bitstream such that the expected PSNR of the video at the receivers is maximized. We show that using network coding with multiple description codes can significantly improve ...

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