Slice loss concealment using bridge pictures in scalable video coding

The scalable extension of H.264/AVC (scalable video coding, SVC) provides spatial, temporal and/ or quality scalability with a coding performance that is comparable to that of H.264/AVC. As in the transmission of all types of compressed video, packet losses or errors may result in the degradation of SVC reconstructed video quality. A concealment method for SVC is proposed that uses the motion vectors (MVs) of higher temporal level pictures (bridge pictures) to estimate the MVs of a lost slice. The proposed scheme is tested on a spatial base layer and experimental results show that up to 2.2 dB performance improvement is obtained compared to the temporal direct method, which is a non-normative error concealment method of SVC.