| CL系统扫描长方体构件的投影计算机仿真 |
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| 引用本文： | 王雅霄,魏存峰,阙介民,舒岩峰,曹大泉,王燕芳,孙翠丽,史戎坚,魏龙.CL系统扫描长方体构件的投影计算机仿真[J].CT理论与应用研究,2014(1):91-100. |
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| 作者姓名： | 王雅霄 魏存峰 阙介民 舒岩峰 曹大泉 王燕芳 孙翠丽 史戎坚 魏龙 |
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| 作者单位： | [1]中国科学院高能物理研究所核辐射与核能技术重点实验室,北京100049 [2]北京市射线成像技术与装备工程技术研究中心,北京100049 |
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| 基金项目： | 科技部国家重大科学仪器设备开发专项（2011YQ030112）. |
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| 摘 要： | x射线投影计算机仿真可以排除实际x射线断层扫描过程中的随机因素，更好地验证扫描方式、图像重建方法等的正确性，为实际系统的实现、完善以及重建算法的改进等提供理论依据。本文基于一种典型的计算机分层成像（CL）系统，针对电子线路板大多为长方体薄板的事实，研究了长方体构件的投影仿真计算方法；设计了仿真芯片模体，对其进行投影计算机仿真；并与系统实验结果对比，得到了较为满意的结果。该方法为后续改进图像重建算法、分析误差来源、校正伪影等研究提供了良好的基础。
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| 关 键 词： | x射线检测 cL系统 计算机分层成像 长方体投影 |
Computer Simulation of Digital Projections-of-cuboid Object in CL System |
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| WANG Ya-xiao,WEI Cun-feng,QUE Jie-min,SHU Yan-feng,CAO Da-quan,WANG Yan-fang,SUN Cui-li,SHI Rong-jian,WEI Long.Computer Simulation of Digital Projections-of-cuboid Object in CL System[J].Computerized Tomography Theory and Applications,2014(1):91-100. |
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| Authors: | WANG Ya-xiao WEI Cun-feng QUE Jie-min SHU Yan-feng CAO Da-quan WANG Yan-fang SUN Cui-li SHI Rong-jian WEI Long |
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| Institution: | 1. Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China 2. Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China) |
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| Abstract: | Computer Simulation of X-ray Projections can be used to exclude the random errors during the X-ray tomography scan. It can be used for verifying the correctness of the scan mode and image reconstruction method, and providing theoretical basis for the actual system implementation and improvement and reconstruction algorithm. While most of the simulation focused on cylinder and ellipsoid, we make simulation of cuboid samples in typical CL system in this paper, as printed circuit is approximate sheet-like cuboid. We compared the Experimental and simulation results and get satisfactory results. The work provides a good foundation for improving image reconstruction algorithm, analyze errors and correct artifacts. |
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| Keywords: | X-ray inspection CL system computer laminography rectangular projection |
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