摘要
提出了一种适用于H.264的区域指导的自适应帧内错误隐藏(ADEC)算法。该算法首先对受损块邻域进行边缘检测,通过对边缘信息的进一步分析排除边缘点匹配的模糊性,然后采用Bezier曲线拟合生成受损块内部边缘,并以此为指导进行区域划分,对不同区域自适应进行插值来重建受损块。实验表明,该算法能很好地保护受损场内部边缘,并适应不同内容类型的图像,差错隐藏效果明显。
An area-directed adaptive intra error concealment（ADEC） algorithm for H. 264 is presented. Firstly, the edges at the missing block boundary are detected,which are further anlayzed to eliminate the ambiguity of edge points matching. Secondly, the Bezier curve fitting method is employed to approximate the edges at the missing block. Finally, the missing block is partitioned into different areas directed by these approximated edges and reconstructed by interpolation. Experiments show that the edges at the missing block can be well recovered with the proposed algorithm and good results can be achieved for images of various content types.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2008年第2期221-224,共4页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(60572152)
陕西省自然科学基金资助项目(2005F26)
