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提出了可以用于H.264/AVC解码器的基于场景变换检测的错误隐藏机制,首先利用H.264/AVC的快速准确的检测是否发生场景切换,根据场景切换检测结果对预测帧和I帧分别提出相应的时间空间自适应的错误隐藏方法.实验结果表明,所提方法在错误隐藏的重构图像质量在主观感觉和客观PSNR定量上,都比通常的方法有明显的提高;与传统错误隐藏方法相比,本文的基于场景切换检测的错误隐藏机制鲁棒性高,更能适应的H.264/AVC更为复杂的多种应用场合.
This paper proposes an error concealment mechanism based on scene change detection which can be used in H.264 / AVC decoder. Firstly, it uses H.264 / AVC to detect whether the scene change happens quickly and accurately, and predicts the prediction frame and I frame according to the scene change detection result The corresponding error concealment methods in time and space are proposed respectively.The experimental results show that the proposed method can obviously improve the subjective perception and the objective PSNR quantitatively compared with the conventional method in the error concealment of the reconstructed image quality, Compared with the hidden method, the error concealment mechanism based on scene change detection in this paper is robust and adaptable to H.264 / AVC more complex applications.