In this paper, a novel video error concealment algorithm is presented for HEVC in wireless IP networks. More specifically, motion vector estimation is performed based on residual errors and block reliability. Then, mismatch errors along block boundary are calculated for reducing blocky effects along the block boundary. In the proposed approach, a downhill simplex approach is adopted for fine-tuning motion vectors, considering residual errors and block reliability, and minimizing boundary errors along prediction blocks at the same time. Exhaustive simulation results are presented to show the robustness and effectiveness of the proposed approach.

The proposed downhill simplex approach effectively conceals HEVC errors in wireless IP networks by considering residual errors, block reliability, and minimizing boundary errors along prediction blocks.

A downhill simplex approach for HEVC error concealment in wireless IP networks

Key Takeaway: The proposed downhill simplex approach effectively conceals HEVC errors in wireless IP networks by considering residual errors, block reliability, and minimizing boundary errors along prediction blocks.