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以场景切换检测和I帧场景复杂度为依据 ,提出了一种适合基于子图划分HDTV的联合码率分配策略。实验表明 :该策略能很好地保证子图重建质量和HDTV各个子图之间主观重建质量的一致性 ,消除可能出现的子图划分效应。
Based on scene switching detection and scene complexity of I-frame, a joint rate allocation strategy suitable for subdividing HDTV based on sub-picture is proposed. Experiments show that this strategy can well guarantee the consistency of the quality of subgraph reconstruction and the quality of subjective reconstruction between subgraphs of HDTV, and eliminate the possible subgraph splitting effect.