摘要
提出了一种同时包含物体内部材料分布和表面几何信息的数字样品概念,研究并实现了基于锥束CT图像的数字样品建模方法。在材料建模方面,根据材料识别提出了一种计算材料相分布的方法;在几何建模方面,针对锥束CT图像的特点,提出并实现了一种局部结构重构和整体拓扑重构相结合的三维物体表面重构新方法。实验表明,该研究为三维物体内部结构和表面信息的测量重构提供了一种可行的新建模方法和实现技术。
A notion of digital phantom was proposed, which can contain surface geometric information and inner material distribution information of an object simultaneously. Digital phantom modeling method based on cone-beam CT images was studied. In the aspect of digital phantom material modeling, an algorithm of computing material distribution was presented based on material identification. In the aspect of geometry modeling, a novel approach to reconstruct 3D object surface was put forward according to the characteristics of cone-beam CT images, which combined the local structures with the global topology. The experimental results show that the new modeling and realization techniques for measurement and reconstruction of inner structures and surface information of 3D object are feasible.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2008年第21期2612-2616,共5页
China Mechanical Engineering
基金
"十一五"国家科技支撑计划重点项目(2006BAF04B02)
西北工业大学青年科技创新基金资助项目(W016221)
关键词
锥束CT
数字样品
材料分布
表面重构
cone-beam CT
digital phantom
material distribution
surface reconstruction
