CT理论与应用研究2013，Vol.22Issue(2)：283-290,8.
基于非局部均值的锥束CT序列切片去噪方法
The Denoising Method Based on Non-local Means for Sequence of Slice Images in Cone-beam CT
摘要
Abstract
A denoising method based on Non-local means for sequence of slice images in cone-beam CT is proposed, according to the properties of the noise and sequence of slice images of cone-beam CT system, moreover, the definition of filtering degree is proposed as well. The relation of filtering strength to standard deviation of the background zone before filtering and the structure zone of method noise images is established. Moreover, the relationship between filtering strength and the standard deviation of the background zone before filtering is established under the same filtering degree to compute the filtering strength of each slice image, which contributes to the consistency of filtering degree of all slice images. The efficiency and feasibility of this method is verified by the experiment.关键词
锥束CT/非局部均值/滤波度/序列切片Key words
cone-beam CT/ non-local means/ filtering degree/ sequence of slice images分类
信息技术与安全科学引用本文复制引用
李向欣,卜昆,黄魁东,张定华,郑佳..基于非局部均值的锥束CT序列切片去噪方法[J].CT理论与应用研究,2013,22(2):283-290,8.基金项目
国家自然科学基金(51105315) （51105315）
国家科技重大专项(2012ZX04007021) （2012ZX04007021）
西北工业大学基础研究基金(JC20110253 （）
JC20120226) （）
西安市技术转移促进工程计划(CX1248-2). （CX1248-2）
