一种改进的多纹理方向空域错误隐藏算法

Improved Spatial Error Concealment Method Based on Multi-texture Direction

为了提高视频压缩码流传输过程中抗误码性能,提出一种改进的多纹理方向插值算法.该算法将丢失宏块多纹理区域自适应划分为若干子块,分别进行插值恢复;并结合一些现有算法的特点,对宏块不同纹理类型切换隐藏算法.实验结果表明,该算法不仅提高了方向插值的精确性,也避免了虚假边缘的产生,有效地提高了错误图像的掩盖效果.

TO improving the error resilience performance of compressed video data during transmission, an improved error concealment algorithm based on multi-texture direction is proposed. The algorithm divide the lost macro black into several sub-blocks adaptively and then interpolate respectively, and combined with the characteristics of some existing algorithms, switch the algorithms according to the different texture type of the macro. Experimental results show that algorithm can achieve good directional interpolation concealment results, and can avoid fake edges.