论文部分内容阅读
Intra帧图像对整个视频图像起着非常重要的作用。基于图像局部边缘类型和走向分析,提出一种能提高Intra帧图像质量的错误隐藏算法。首先根据相邻宏块中边缘类型和走向来判断当前出错宏块的边缘类型与走向分成多个小区域,以分块插值恢复数据。对平缓图像,采取时域替代方法恢复数据,既降低算法复杂度,又能保证良好的图像质量。实验结果表明,本算法能有效提高图像的解码质量。
Intra frame images play a very important role in the entire video image. Based on the analysis of the local edge type and direction of the image, an error concealment algorithm is proposed to improve the quality of Intra frame image. First of all, according to the type and direction of the edge in the adjacent macroblock, the edge type and direction of the current error macroblock is divided into several small areas, and the data is recovered by the block interpolation. For smooth images, take the time domain alternative method to recover the data, not only reduce the complexity of the algorithm, but also ensure good image quality. Experimental results show that the proposed algorithm can effectively improve the quality of image decoding.