计算机工程与应用Issue(5)：11-15,5.DOI:10.3778/j.issn.1002-8331.1309-0475
基于场景检测的自适应Intra帧差错掩盖算法
Adaptive error concealment algorithm based on scene change detection
摘要
Abstract
In order to reduce the influence of transmission errors on the reconstructed image quality in decoder, a novel adaptive error concealment algorithm based on scene change detection for intra frames of H.264/AVC is proposed. The distribution difference of intra prediction mode for H.264/AVC is used to detect scene change. Then distortion estimation is carried out for these intra frames not happened at the moment of scene change. Finally, combined with distortion estima-tion, the new method adaptively selects the spatial-temporal error concealment schemes. Simulation results show that the presented algorithm can use the high correlation of adjacent frames sequence and effectively suppresses error propagation. Compared with other conventional methods, the proposed algorithm can achieve 1~2 dB gain in terms of average PSNR and provides much better error concealment results.关键词
错误掩盖/场景检测/失真度估计/H.264/AVCKey words
error concealment/scene change detection/distortion estimation/H.264/AVC分类
信息技术与安全科学引用本文复制引用
唐浩漾,王曙光,史浩山..基于场景检测的自适应Intra帧差错掩盖算法[J].计算机工程与应用,2014,(5):11-15,5.基金项目
国家自然科学基金（No.60902052）；陕西省自然科学基金（No.2012JM8022）；陕西省教育厅专项科研计划基金（No.12JK0540）。 （）
