The need for adapting video stream delivery over heterogeneous and unreliable networks requires self-adaptive and error resilient coding.Network bandwidth fluctuations can be handled bymeans of a video coding schemewhich adapts to the channel conditions. However, packet losses which are frequent in wireless networks can cause a mismatch during the reconstruction in the receiver end and result i...

This paper presents and compares two multiple description schemes for coding of stereoscopic video, which are based on H.264. The SS-MDC scheme exploits spatial scaling of one view. In case of one channel failure, SS-MDC can reconstruct the stereoscopic video with one view low-pass filtered. SS-MDC can achieve low redundancy (less than 10%) for video sequences with lower inter-view correlation....

We present an embedded packetization framework for layered multiple description codes, in which both the base layer and the enhancement layer share the same number of packets, while each packet is partitioned into two parts, each belongs to one layer. In this framework, optimizing a single multiple description code for high-bandwidth clients and directly applying it to low-bandwidth clients onl...

Packet transmission over computer networks is the main reference framework for most information technology applications. Packet loss is one of the main problems affecting performance. Various techniques have been proposed to protect packets from losses, one is distributing information on the network in order to exploit the characteristics of the network itself allowing adaptivity and flexibilit...

This paper proposes a Multiple Description Scalar Quantisation (MDSQ) coding scheme for H.264/AVC intra slices which is based on a multi-loop structure to prevent distortion accumulation at the decoder due to drift in intra predicted blocks. The drift distortion is reduced by sending a controlled amount of redundant information to be used whenever any of the descriptions fails to reach the deco...

Multiple description (MD) coding and quantization has received a lot of attention recently, and has been studied extensively and extended to many demanding applications such as speech and video. We propose two multiple description quantization schemes in order to design the codebooks and partitions of side and central quantizers. The applied framework originates in the multiple description quan...

In [1] we proposed a balanced Multiple Description Coding (MDC) scheme based on the Discrete Wavelet Transform (DWT). This MDC includes an efficient bit allocation procedure that dispatches the source image redundancy between different channels. The amount of redundancy is controlled according to the Bit Error Rate of the different channels. Here, we propose to extend this approach for low bit ...

This paper presents a method for multiple description coding, by clustering generic redundant dictionaries into blocks of N atoms. Since these blocks are likely to gather coherent atoms, the encoder can distribute atoms from the same coherent block to different descriptions, without important penalty on the side distortion. In the same time, atoms from the same blocks are sufficiently different...

Multiple description coding, is a method of compressing a multimedia content into two or more descriptions. Each description has a controlled amount of redundancy, so that the content can be recovered even if one of the descriptions is lost. Also the descriptions can take different routes to the destination when they are transmitted from the source to the destination. Quincunx subsampling is a ...

Existing video multicast routing protocols in wireless ad hoc networks have been developed under the assumption that destination nodes wish to receive all the information sent by the multicast source, i.e., they do not support heterogeneous destinations. This paper addresses the problem of video multicast for heterogeneous destinations in wireless ad hoc networks. Multiple Description Coding (M...