Weighted boundary matching error concealment for HEVC using block partition decisions

We propose a weighted boundary matching error concealment method for HEVC. It uses block partition decisions to improve a common block matching algorithm that finds blocks with the best matched boundaries from the previous frame to conceal the currently corrupted blocks. The block partition decisions from the co-located block of the corrupted one are exploited. For each partition, a summed boundary weight is computed; the one with the highest weight is chosen to be concealed next. Experimental results show the proposed method performs better than conventional error concealment methods objectively and subjectively.

I. Introduction

WITH the growing popularity of high resolution (HD) video, the High Efficiency Video Coding (HEVC) standard [1] has been recently developed jointly by the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG) standardization organizations. HEVC, evolved from H.264/MPEG-4 Advanced Video Coding (AVC) [2], aims to address two key issues: increased video resolution and increased use of parallel processing architectures. The HEVC standard is designed to increase coding efficiency for encoding video with higher resolutions and to introduce parallel decoding syntax to expedite the decoding process [3].