| 工业CT大视场扫描成像方法研究 |
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| 引用本文： | 傅健,路宏年.工业CT大视场扫描成像方法研究[J].中国航空学报,2003,16(1):59-64. |
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| 作者姓名： | 傅健 路宏年 |
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| 作者单位： | School of Mechanical Engineering and Automation，Beijing University of Aeronautics and Astronautics，Beijing 100083，China |
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| 摘 要： | 工业CT二代扫描方式扫描视场大，但扫描时间长；三代扫描方式扫描时间短，但扫描视场小。为解决较大尺寸构件ICT快速检测问题，讨论了一种基于三代扫描的大视场扫描方式，推导了它的FBP重构算法。计算机模拟和实验结果证明了该算法的正确性。分析表明，其有效扫描视野在三代的1．9倍以上。
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| 关 键 词： | 计算机模拟 FBP重构算法 无损检测 计算机层析成像 扇束扫描 CT |
Research of Large Field of View Scan Mode for Industrial CT |
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| FU Jian,LU Hong-nian.Research of Large Field of View Scan Mode for Industrial CT[J].Chinese Journal of Aeronautics,2003,16(1):59-64. |
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| Authors: | FU Jian LU Hong-nian |
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| Abstract: | For industrial computed tomography systems, generation II scan mode has a large field of view but time consuming and generation III has a small field of view but fast. In order to realize the rapid ICT test of large objects, a scan mode based on generation III called large field of view scan was discussed and its reconstruction algorithm based on FBP was deduced. The validity of the algorithm was verified by the results of computer simulation and experiments. Analysis showed that the effective scan field of view could be improved by more than 90% compared with that of generation III. |
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| Keywords: | industrial computed tomography fan beam scan filter back projection algorithm rebin algorithm non destructive testing |
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