立体视频右通道整帧丢失的差错掩盖算法

立体视频流在传输过程中，网络差错常常会引起整帧图像的丢失。由于视点间的相关性，立体视频右通道中的丢失帧可以利用左通道对应帧的编码信息对其进行掩盖。结合已有的立体视频编码算法对视点间的相关性进行分析，然后提出一种适用于立体视频右图像整帧丢失的运动跳跃（MotionSkip）差错掩盖算法。该算法在相同时刻的左帧中找到丢失宏块的对应宏块，并从对应宏块的编码信息中得到丢失宏块的预测方式，进而采用运动补偿对其进行掩盖，直到恢复出整个丢失帧。实验结果表明，算法能够获得较好的主观质量，与基于时域相关性的TD算法相比，该算法在低丢包率情况下PSNR最高能提高2．62db、最低能提高0．1db，高丢包率情况下PSNR最高能提高6．18db、最低能提高0．95db。

An error concealment algorithm for entire right frame loss in stereoscopic video sequence

When the compressed stereoscopic video stream is transmitted over the network the packet loss may cause a whole-frame loss.There is some relationship between the left and right views and the lost right frame can be concealed by the coding information of the corresponding frame in the left view.The relationship between the two views is analyzed according to the coding scheme of the stereoscopic video sequence and an error concealment algorithm for the entire right frame loss is proposed.This algorithm first ...