基于帧内帧间联合预测的深度视频编码方法

A combined intra-inter prediction for depth video coding

在基于多视点加深度(MVD)格式的视频编码方案中,深度视频的编码性能直接影响最终绘制的虚拟视点的质量。对于具有边界的深度块而言,传统的帧内预测和帧间预测模式仍存在一定的提升空间。因此,文中提出一种基于帧内帧间联合预测的深度视频编码方法。该方法首先获取当前深度块的最优帧内预测模式和最优帧间预测模式。然后,将这两种模式应用于边界深度块的不同区域。最后,自适应地调整预测结果的加权系数,实现联合预测。实验结果表明,相对于3D-HEVC平台的传统预测模式,本方法实现了更好的编码性能。

In the video coding scheme based on multiview plus depth( MVD),the quality of the final synthesized views is directly affected by the coding performance of depth videos. For the edge blocks in depth maps,conventional intra and inter prediction modes still need to be improved. Therefore,a combined intra-inter prediction method for depth video coding is proposed in this paper. Firstly,the best intra and inter modes of the current depth block are obtained. Then,the two modes are assigned to each partition region of the current edge block. Finally,the weighting coefficients of each region are adjusted adaptively to realize the combined prediction. The experimental results show that the proposed method achieves a better coding performance compared with the conventional prediction modes in 3D-HEVC.