一种改进的H.264自适应帧内错误隐藏算法

提出了一种改进的H.264自适应帧内错误隐藏算法,使重建图像具有较好的平滑性,同时有效恢复了边缘信息。通过区域选择、亮度信号插值、块位置检测等方式,有效降低了解码运算量并解决了工程应用中的难点。在MATLAB和H.264标准测试平台JM86上分别进行验证,结果表明,该算法简单实用,适于实时处理,峰值信噪比高出一般传统方法 3 dB,改善了重建图像的主、客观质量,具有较高的应用价值.

An improved adaptive error concealment algorithm for H.264 intra frame

This paper presents an improved adaptive error concealment algorithm for H.264 intra frame, the reconstructed images with better smoothness, while effective recovery of the edge information. The algorithm adaptive selection of error concealment algorithm based on space pixel weighted averaging or edge detection, and Improve the traditional algorithm of edge detection, algorithm based on edge detection and directional weight have been proposed. Area selection, the luminance signal interpolation and block position detection effectively reducing the amount of decoding algorithms to solve the difficulty of engineering applications. The algorithm is validated on Matlab and JM86 the standard test platform of H.264. Experimental results show that the algorithm is simple and practical, suitable for real-time processing, peak signal to noise ratio (PSNR) higher than the conventional method of 3dB. The subjective and objective quality of the reconstruction image improved and has a high value.