The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit
later.
We apologize for any inconvenience caused
Study on Filter Algorithm for Speckle Noise Based on Singular Value Decomposition
Author(s): ZHAO Wei-zhou, YANG Bao-zhen, JING Hui-li
Pages: 12-
14,26
Year: 2013
Issue:
23
Journal: Video Engineering
Keyword: speckle noise; singular value decomposition; surface fitting; PSNR; EPI;
Abstract: Speckle噪声的复杂性和真值图像的不可知性增加了消噪算法设计的难度,传统算法在设计时借助污染像素估计灰度真值,同时忽略了位置信息对灰度估计的影响.借助奇异值分解和曲面拟合进行了消噪算法的研究与设计,首先在局部窗口进行奇异值分解,并对酉矩阵采用中值滤波进行消噪,其次引入参数修正奇异值以替代传统的阈值处理方法,最后在局部区域利用灰度曲面拟合技术重构消噪图像.实验表明,与传统的均值滤波、中值滤波相比,该算法能获得较为满意的消噪结果,具有较高的峰值信噪比和边缘保留指数.
Citations
No citation found
Related Articles
No related articles found