摘要
提出了一种基于维纳插值模型的帧内错误隐藏插值算法WIEC。算法采用最近的相邻点作为插值的参考点,同时对传统插值选点方法进行改进,将已恢复的像素点用作估值,使得算法可以较好的恢复图像中如边缘特征等一些重要信息。考虑到误差积累和计算复杂度等问题,又提出了一种螺旋型插值顺序模式。该插值顺序模式不仅提高了插值精度,而且减小了最大插值误差。仿真实验表明,算法具有良好的错误隐藏效果。
A new intra-frame error concealment method WIEC using the Wiener interpolation algorithm is presented. The pixels for interpolation are determined by using the nearest principle, in addition, pixels recovered before are used in estimation for recovery ofedge features. Against error accumulation and computation complexity, a novel spirality interpolation sequence scheme is assumed, which improves precision of interpolation and reduces maximum error of interpolation, Simulating test shows that it is very effective to use the algorithm to interpolate lost pixels in real time processing.
出处
《计算机工程与设计》
CSCD
北大核心
2006年第17期3270-3272,共3页
Computer Engineering and Design
