Design and implementation of efficient error concealment algorithm using adaptive selection of adjacent motion vectors and data hiding

Abstract

In this paper, we propose a hybrid error concealment algorithm, which uses data hiding and decoder-based concealment. The algorithm uses the error concealment with data hiding. If the hiding information is lost, the motion vector of the lost macroblock is computed with adaptive selection of the adjacent motion vectors and overlapped block motion compensation (OBMC) is applied with this motion vector. Our algorithm is shown to be more effective in case of continuous GOB (Group of Blocks). The results show more significant improvement than many temporal concealment methods such as Motion Vector Rational Interpolation (MVRI) or existing error concealment using data hiding.