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Adaptive MPEG-2 information structuring

机译:自适应MPEG-2信息结构

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Abstract: This work addresses the optimization of TV-resolution MPEG-2 video streams to be transmitted over lossy packet networks. This paper introduces a new scene-complexity adaptive mechanism, namely the adaptive MPEG-2 Information Structuring (AMIS) mechanism. AMIS adaptively modulates the number of resynchronization points in order to maximize the perceived video quality assuming it is aware of the packet loss probability and the error concealment technique implemented in the decoder. The perceived video quality depends both on the encoding quality and the degradation due to data loss. Therefore, AMIS constantly determines the best compromise between the rate allocated to pure video information and the rate aiming at reducing the sensitivity to packet loss. Results show that the proposed algorithm behaves much better than the traditional MPEG-2 encoding scheme in terms of perceived video quality under the same traffic constraints. !14
机译:摘要:这项工作解决了在有损分组网络上传输的电视分辨率MPEG-2视频流的优化问题。本文介绍了一种新的场景复杂度自适应机制,即自适应MPEG-2信息结构(AMIS)机制。假设AMIS知道丢包率和解码器中实现的错误隐藏技术,则它会自适应地调制重新同步点的数量,以使感知的视频质量最大化。感知的视频质量既取决于编码质量,又取决于数据丢失引起的质量下降。因此,AMIS不断确定分配给纯视频信息的速率与旨在降低对丢包敏感性的速率之间的最佳折衷。结果表明,在相同的流量约束下,该算法在感知的视频质量方面比传统的MPEG-2编码方案有更好的表现。 !14

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