A Frame Loss Concealment Solution for Spatial Scalable HEVC using Base Layer Motion

Scalable High Efficiency Video Coding (SHVC) is the most recent video coding solution designed mainly for network adaptive or device adaptive applications. It follows a layered coding structure with one base layer (BL) and one or several enhancement layers (ELs) which can be unequally protected. SHVC is often sensitive to packet loss in unreliable networks, especially in case of ELs. In this paper, we propose a novel error concealment method for the SHVC EL under an assumption that the BL is well protected. First, we recover the partitioning and resample motion data from collocated BL frame. Following, we remove outliers of motion field by a motion vector refinement algorithm. Lastly, we conceal loss frame by using motion compensation and deblocking filtering. Experiments conducted with a rich set of test sequences using the spatial-scalable SHVC have shown that our proposed method significantly outperforms the existing error concealment methods, e.g., BL Reconstruction Up-sampling (RU) and BL-SKIP in both subjective and objective quality assessments.