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Compressive sensing is a new technique in signal processing which can recover a sparse signal vector via a much smaller of non-adaptive, linear measurements than the dimension of the signal vector. In this paper, we applied compressive sensing to a joint source compression-channel coding scheme. With analysis of the reconstruction error of the sparse representation of natural image signals, we argue...
During video streaming over packet-erasure network, packets may lose due to network congestion. Since video packets have different significance and validity for decoding, the streaming system is expected to transmit the most critical packets when congestion occurs. In this paper, a packet criticality model is proposed and then a video transmission framework based on this model is presented. The criticality...
Recently, scalable video coding technique has attracted a lot of attention for its desired scalable functionality and coding efficiency. H.264/SVC encodes a video in a hierarchical way by which the coded bit stream can satisfy terminals with different capability of display and different condition of network at the same time. However, the huge computational complexity of mode decision causes difficulties...
In the new Wyner-Ziv (WZ) video coding paradigm, a virtual correlation channel is assumed between the quantized source and the side information (SI) at the decoder, and channel coding is generally applied to achieve compression. In this paper, we address errors caused by the virtual correlation channel and propose an error concealment approach for pixel-based WZ video coding. In the approach, errors...
A GOP-based state extraction algorithm for scalable video coding (SVC) is proposed to improve the video streaming transmission efficiency and reconstructed quality. According to the scalable features and internal relationship of SVC enhancement layers, we put forward a novel state model, based on which the SVC bit streams extraction algorithm employing the rate-distortion optimization method is presented...
Based on path diversity, Multi-Path Transmission (MPT) is an efficient method to improve delay and anti-error performance of streaming transmission in Wireless Mesh Network (WMN). This paper proposes a rate allocation algorithm among Multiple Descriptions (MD) based on Multiple Descriptions Coding (MDC) adopting H.264 technique, which presents the upper and the latter threshold for rate control to...
In Wyner-Ziv (WZ) video coding, decoder side information (SI) estimation takes an important role. In this paper, an approach to SI estimation for WZ video coding is proposed. It is based on universal prediction and motion compensated temporal interpolation (MCTI). In the approach, a WZ frame which is to be decoded is first divided into non-overlapping blocks. According to their motion activity, the...
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