论文标题
运动补偿的三维频率选择性外推，以改善视频通信中的错误隐藏
Motion Compensated Three-Dimensional Frequency Selective Extrapolation for Improved Error Concealment in Video Communication
论文作者
论文摘要
在传输视频数据时，由于易于错误的通道，由于传输错误而导致严重的图像扭曲的风险无处不在。为了处理解码器侧的图像畸变，应用了错误隐藏。本文介绍了运动补偿三维频率选择性外推，这是一种新型时空误差隐藏算法。该算法使用分数运动估计和补偿作为初步步骤，然后生成扭曲信号的模型。模型生成是通过增强版本的三维频率选择性外推的增强版本进行的，即现有的误差隐藏算法。与现有的算法相比，提出的算法可以提高隐藏质量高达1.64 dB psnr。总的来说，与其他众所周知的误差隐藏算法相比，运动补偿和改进的模型生成的结合扩展了基础频率选择性外推的较高的外推质质量，从而增加了超过3 dB的增益。
During transmission of video data over error-prone channels the risk of getting severe image distortions due to transmission errors is ubiquitous. To deal with image distortions at decoder side, error concealment is applied. This article presents Motion Compensated Three-Dimensional Frequency Selective Extrapolation, a novel spatio-temporal error concealment algorithm. The algorithm uses fractional-pel motion estimation and compensation as initial step, being followed by the generation of a model of the distorted signal. The model generation is conducted by an enhanced version of Three-Dimensional Frequency Selective Extrapolation, an existing error concealment algorithm. Compared to this existent algorithm, the proposed one yields an improvement in concealment quality of up to 1.64 dB PSNR. Altogether, the incorporation of motion compensation and the improved model generation extends the already high extrapolation quality of the underlying Frequency Selective Extrapolation, resulting in a gain of more than 3 dB compared to other well-known error concealment algorithms.
