摘要
In order to improve the video quality of transmission with data loss,a spatial and temporal error concealment method was proposed,which considered both the state information of the network and the perceptual weight of the video content.The proposed method dynamically changed the reliability weight of the neighboring macroblock,which was used to conceal the lost macroblocks according to the packet loss rate of the current channel state.The perceptual weight map was utilized as side information to do weighted pixel interpolation and side-match based motion compensation for spatial and temporal error concealment,respectively.And the perceptual weight of the neighboring macroblocks was adaptively modified according to the perceptual weight of the lost macroblocks.Compared with the method used in H.264 joint model,experiment results show that the proposed method performs well both in subjective video quality and objective video quality,and increases the average peak signal-to-noise ratio(PSNR) of the whole frame by about 0.4 dB when the video bitstreams are transmitted with packets loss.
In order to improve the video quality of transmission with data loss, a spatial and temporal error concealment method was proposed, which considered both the state information of the network and the perceptual weight of the video content. The proposed method dynamically changed the reliability weight of the neighboring macroblock, which was used to conceal the lost macroblocks according to the packet loss rate of the current channel state. The perceptual weight map was utilized as side information to do weighted pixel interpolation and side-match based motion compensation for spatial and temporal error concealment, respectively. And the perceptual weight of the neighboring macroblocks was adaptively modified according to the perceptual weight of the lost macroblocks. Compared with the method used in H.264 joint model, experiment results show that the proposed method performs well both in subjective video quality and objective video quality, and increases the average peak signal-to-noise ratio （PSNR） of the whole frame by about 0.4 dB when the video bitstreams are transmitted with packets loss.
基金
Project(2006C11200) supported by the Science and Technology Project of Zhejiang Province of China
