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The rapid growth of video in wireless networks is a crucial issue to be addressed by content providers. Nowadays, an emerging and promising trend is the development of solutions aimed at maximizing the quality of experience (QoE) of end users. However, the prediction of the QoE perceived by users in different conditions remains a major challenge. In this paper, we propose a two-layer hierarchical...
Wireless multimedia service is considered a promising application in the near future. However, current layered protocol stack is not conductive to provide adaptive multimedia streams in instable wireless environment. In this paper, a new Cross-Layer mechanism is proposed to solve this problem. A scalable video encoder can dynamically adjust its coding behavior according to the estimated available...
As the increasing requirement for securing and the development of communication technology, network technology and computer technology, the video surveillance based on CDMA1x has developed quickly in this few years. In order to adapt the characteristic of CDMAlx wireless network environment which is low bandwidth and high bit error rates, what kind of video coding to choose should taken into account...
Rate distortion optimization (RDO) based spatial intra prediction is an important new feature in H.264/AVC. It chooses the best mode for each MB by exhaustively examining all possible modes. Thus,drastically increased computation complexity is involved. This paper proposes an efficient fast intra mode decision algorithm.Prewitt operator is used to extract each block's two most dominant edge directions...
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