Region-Based Predictive Decoding of Video

This letter presents a region-based predictive decoding technique for end-to-end delay reduction in video communications. Video frames are predicted from past video data and displayed before they arrive at the decoder, thereby reducing the end-to-end delay. This problem is similar to whole-frame concealment, so we compare our method to a state-of-the-art whole-frame concealment algorithm. As demonstrated in the letter, our method yields better visual results with peak signal-to-noise ratio gains up to 2.5 dB on sequences with complex and high-intensity motion. These gains are mainly due to motion segmentation and region-based motion prediction.