Predictive Picture Refresh Based on Scene-Context Reference Picture for Video Transmission

The transmission of video over wireless networks always confront the risk of packet-losses and bit-errors, which result in the rapid propagation of errors in both time and space and the quick degradation of the reconstructed video quality. In order to stop the error propagation, the traditional method is intra-frame refresh. This paper proposes a novel error-resilient method which names predictive picture refresh based on scene-context reference picture. When the unreliable wireless network requires high intra-frame-refresh rates, compared with the traditional method, our method can achieve apparent saving effect in frame bits while maintaining the similar quality