基于反馈的ARQ技术包括利用多帧参考机制的参考帧选择（Reference Picture Selection，RPS）机制、混合ARQ（Hybrid，HARQ）机制和基于ARQ的反馈错误跟踪技术。
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RPS (Reference picture selection) is one of effective schemes for video error-resilience. It selects appropriate reference picture to cease error propagation.
参考帧选择是一种降低图像错误扩散，增强视频抗差错能力的有效方法。
参考来源 - 视频编码传输的容错纠错优化方法Based on these characteristics,a novel low complexity rate distortion optimization(RDO) algorithm which combination reference frame selection with mode selection RDO is proposed.
并由此提出一种联合参考帧选择和模式选择的低复杂度RDO(rate distortion optimization)算法。
参考来源 - 运用H.264/AVC宏块编码特征的低复杂度率失真优化算法·2,447,543篇论文数据，部分数据来源于NoteExpress
分别为基于线性预测的准菱形搜索算法(LPPDS)和基于空间预测的多参考帧选择算法。
They are line prediction based pseudo-diamond search (LPPDS) algorithm and spatial prediction based multi-frame selection algorithm.
特别是对于参考帧的选择、宏块分割的方式、预测方向的选定，都达到了自适应的效果。
Using these coding tools, H. 264 achieves significant performance. Especially for reference frame, block size, and prediction direction, it can adaptively do the selection.
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