摘要
针对卷积反投影CT图像重建算法(CBP)中采用传统滤波函数存在图像振荡,抗噪声性能差和图像细节模糊等问题,结合混合滤波器和多点加权平均的思想,提出了一种新的滤波函数即R-L-MS-L滤波函数,采用该滤波函数能够有效地抑制图像重建时的振荡,使重建后的图像更平滑,且其抗噪声性能比传统的滤波函数更高。实验仿真结果表明:采用R-L-MS-L滤波函数比传统的滤波函数有着更好的重建质量。
Aim at convolution back projection algorithm（CBP） for CT image reconstruction existing image oscillation, poor anti-noise performance and image detail fuzzy. In this paper,based on the idea of weighted average and the hybrid filter,a new kind of filter function that is R-L-MS-L filter func- tion is proposed. Compared with traditional filter function, the reconstruction image using this filter function can effectively inhibit oscillation and make reconstruction image smoother. In addition, its noise performance is higher than the traditional filter functions. The simulation and experiment results show that using R-L-MS-L filter function has better reconstruction quality than traditional filter functions.
出处
《电视技术》
北大核心
2014年第7期26-28,32,共4页
Video Engineering
基金
国家自然科学基金项目(61171177)
山西省青年基金资助项目(2009021019-2)
关键词
CBP
图像重建
滤波函数
CBP
filter function
image reconstruction
作者简介
王晓鹏（1989-）,硕士生,主研图像处理与重建.
王明泉（1970-）,教授,博士生导师,主研信号和图像处理、分析、识别和重构.
侯慧玲（1981-）,女,博士生,主研图像去噪去和重建.
