基于区域特征的直播视频错误隐藏方法

his paper proposes a video error concealment method for the reconstruction of large size corrupted regions of livestream videos. The method adopts different spatial and temporal error concealment methods according to the characteristics of livestream frames and can keep a well balance on time-cost and performance. First, the method named motion vector estimation is performed for small motion regions. Then it uses the improved adaptive homography transform to reconstruct unknown regions in each frame. Finally, a spatial error concealment method known as bilinear interpolation is performed to conceal the macroblocks with poor effect after above two steps. Experiment results show that the proposal has the same performance as the baseline paper for livestream videos, and it is less time-consuming which can be applied in real livestream applications.