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中文摘要：
基于H．264／AVC编码框架，提出一种支持空域随机访问功能的多视点视频编码方法，以满足快速虚拟视点绘制的需求．首先采用灵活的GOP时空划分来构建独立时空体，从而在每个时空体内通过限制帧间预测范围来增强解码的独立性，实现压缩域内某一帧特定区域数据的快速定位；进而通过调整预测空间来改善空域随机访问和整帧编码性能之间的关系．实验结果表明，该方法不仅在整帧压缩效率和快速空域随机访问灵活性方面达到了很好的平衡，而且能够通过传输部分码流的方式节省传输带宽．
英文摘要：
novel mult codec. An prediction To obtain fast rendering effects of virtual viewpoint video, in this paper we propose a i-view video coding method with spatial random access functionality based on H. 264/AVC independent space-time cube coding is first proposed to limit the scope of inter-frame via flexible re organizing GOP partitions in time and space dimensions, which guarantees the independent decoding of each cube. As a result, random access of specific regions in the compressed data of a picture can be accelerated. The conflict of performance between full-frame compression and spatial random accessibility is then further ameliorated through regulating inter-prediction space. The results demonstrate that the proposed coding scheme not only makes a good trade-off between fullframe compression and spatial random access flexibility, but also supports selective streaming to save the channel bandwidth.
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