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集装箱CT检测系统重建技术研究
刘金汇 ; 向新程 ; LIU Jin-hui ; XIANC Xin-cheng
2010-07-15 ; 2010-07-15
会议名称全国第五届核仪器及其应用学术会议论文集 ; Proceedings of the 5th National Conference on Nuclear Instrument & Its Application ; 全国第五届核仪器及其应用学术会议 ; The 5th National Conference on Nuclear Instrument & Its Application ; 中国海南海口 ; CNKI ; 中国核学会核电子学与核探测技术分会、中国电子学会核电子学与核探测技术分会
关键词集装箱CT CT重建 伪影去除 数字减影 不完全投影 container CT CT reconstruction artifact removing digital subtraction non- perfect projections TL81
其他题名Study on CT reconstruction for the container CT inspection system
中文摘要在CT重建技术中,利用反投影重建算法进行CT图像的重建过程,并引入滤波函数进行相关处理。对于工件尺寸比较大,射线衰减比较大的情况,提出了利用数字减影的方法,实现对工件边界位置的CT图像重建技术。使用不完全投影数据进行反投影算法CT重建,得到满足一定精度要求的CT图像,并对不完全投影进行了分析。实验证明本工作满足实际要求,系统能够达到比较高的密度分辨率和空间分辨率,CT重建软件设计是成功的。; The back project algorithm is used to construct the CT images, and the filter functions are also included to process the CT data. The digital subtraction method is used to realize the CT reconstruction for the edge parts of large - scale object that has large X -ray or gamma ray attenuatioo in the center part of the object. The CT images based on the back project algorithm are also obtained by using the non - perfect projection data. The obtained CT image can have a certain precision to meet the demand. And the principal of the CT reconstruction using the non- perfect project data is also analyzed. The experiment showed that the CT construction realized by the paper has a high density and space distinguishable abilities. The designing for CT construction software is successful.; 国家“十五”科技攻关项目(2002BA406B03)
语种中文 ; 中文
内容类型会议论文
源URL[http://hdl.handle.net/123456789/66267]  
专题清华大学
推荐引用方式
GB/T 7714
刘金汇,向新程,LIU Jin-hui,等. 集装箱CT检测系统重建技术研究[C]. 见:全国第五届核仪器及其应用学术会议论文集, Proceedings of the 5th National Conference on Nuclear Instrument & Its Application, 全国第五届核仪器及其应用学术会议, The 5th National Conference on Nuclear Instrument & Its Application, 中国海南海口, CNKI, 中国核学会核电子学与核探测技术分会、中国电子学会核电子学与核探测技术分会.
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