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| An error resilient scheme for H.264 video coding based on distortion estimated mode decision and nearest neighbor error concealment |
| Lee Tien-Hsu, Wang Jong-Tzy, Chen Jhih-Bin, Chang Pao-Chi |
| Department of Electrical Engineering, National Chi Nan University, Taiwan 545, Puli, Nantou County; Department of Electronic Engineering, Jin-Wen Institute of Technology, Taiwan 231, Shindian, Taipei County; Department of Communication Engineering, National Central University, Taiwan 320, Jhongli, Taoyuan County |
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Abstract Although H.264 video coding standard provides several error resilience tools, the damage caused by error propagation may still be tremendous. This work is aimed at developing a robust and standard-compliant error resilient coding scheme for H.264 and uses techniques of mode decision, data hiding, and error concealment to reduce the damage from error propagation. This paper proposes a system with two error resilience techniques that can improve the robustness of H.264 in noisy channels. The first technique is Nearest Neighbor motion compensated Error Concealment (NNEC) that chooses the nearest neighbors in the reference frames for error concealment. The second technique is Distortion Estimated Mode Decision (DEMD) that selects an optimal mode based on stochastically distorted frames. Observed simulation results showed that the rate-distortion performances of the proposed algorithms are better than those of the compared algorithms.
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Received: 02 December 2005
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