一种基于平面运动视差不变性的立体视频整帧丢失重建技术

针对立体视频单个视点中的整帧丢失问题,提出基于平面运动视差不变性的差错隐藏方案。该方案主要包括两个部分:1)利用两个视点的运动一致性,根据视差定位目标位置,把正确接收视点的当前帧与前一帧的帧差投影到丢失帧所在视点,作为当前帧与前一帧的帧差,再由帧差及前一帧的像素值重建丢失的帧；2)根据空洞特征自适应地选择基于邻域的方法或基于运动向量的方法进行空洞填补。实验结果表明,所提算法能够高质量地重建丢失的帧,其重建质量优于现有算法。

Whole Frame Loss Concealment Method for Stereo Video Based on Disparity Consistence

A whole frame loss concealment method for stereoscopic video was proposed in this paper.It consists of two parts.Firstly,based on the consistency of object motions in neighboring views,the frame difference between the current and previous frame in the correctly received view is projected onto the view of lost frame via the estimated disparities.Then,the lost frame is recovered from the projected frame difference and its previous frame.Secondly,according to the characteristics of holes,two alternative methods are adaptively performed to effectively fill the holes.Experimental results show that the proposed frame loss concealment method for stereoscopic video can effectively restore the lost frame at the decoder and outperforms several existing methods.