时空域自适应错误隐藏算法_电子资料文库 关键词:空域隐藏;时域隐藏;运动补偿 [gap=873]Keyword: spatial concealment; temporal concealment; motion compensation
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Temporal Error Concealment 时域差错隐藏
In particular, the end-to-end error propagation distortion on pixel level precision is analyzed based on temporal concealment and channel error rate. Subsequently, a new general transmission distortion estimation model for various temporal concealments is proposed.
首先介绍了视频编码中率失真(Rate-Distortion，R-D)优化的基本思想，讨论了宏块(Microblack，MB)编码模式选择所涉及的R-D优化问题；在综合考虑差错扩散、时域掩盖以及信道误码等基础上，从像素级对端到端的视频传输差错扩散失真情况进行了详细分析，提出了一种新的涵盖各种时域差错掩盖方法的通用传输失真度估算模型。
参考来源 - 低码率视频差错恢复技术若干问题研究·2,447,543篇论文数据，部分数据来源于NoteExpress
A new error temporal concealment algorithm for recovering the loss or erroneously received motion vectors is presented.
提出了一种新的时域误码掩盖算法，能更准确地恢复误码块丢失的运动矢量。
Simulation shows that the proposed technique is superior to conventional temporal concealment techniques and demonstrates fairly good robustness in various lost rates of inter-coded macroblocks.
仿真结果表明，该算法在各种宏块丢失率下均优于传统的时域误码掩盖算法，具有很强的鲁棒性。
Experimental results show that both the visual quality and PSNR of the image processed using the proposed error concealment method are better than other temporal algorithms.
大量的模拟实验结果表明，利用该算法隐藏的图像在视觉效果和峰值信噪比(PSNR)两方面均优于同类算法。
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