A new error concealment algorithm is proposed using recursive motion vector refinement. The proposed method utilizes the top/bottom motion vectors of lost macroblocks in current and reference frames and refines motion vectors recursively. Simulation results based on the MPEG-4 codec present a superior subjective and objective performance of the proposed technique compared with conventional temporal concealment techniques.
['Ming-Chieh Chi', 'Mei-Juan Chen', 'Jia-Hwa Liu', 'Ching-Ting Hsu']
High performance error concealment algorithm by motion vector refinement for MPEG-4 video