| 基于最小区域的快速CT图像重建 |
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| 引用本文： | 张顺利,张定华,赵歆波,黄魁东.基于最小区域的快速CT图像重建[J].计算机辅助设计与图形学学报,2009,21(2). |
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| 作者姓名： | 张顺利 张定华 赵歆波 黄魁东 |
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| 作者单位： | 1. 咸阳师范学院图形图像处理研究所,咸阳,712000;西北工业大学现代设计与集成制造技术教育部重点实验室,西安,710072
2. 咸阳师范学院图形图像处理研究所,咸阳,712000 |
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| 基金项目： | 国家自然科学基金，陕西省教育厅专项基金 |
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| 摘 要： | 由于工业CT重建目标的形状差异较大,针对传统CT图像重建算法均选取矩形重建区域,提出一种基于最小区域的图像重建方法.首先由扫描到的投影数据通过直线生成算法构建重建目标的最小区域包络图;然后提出一种快速区域填充算法,生成图像重建的最小区域.该方法将重建区域限定在最小区域内,减少了不必要的计算,提高了重建速度.最后通过仿真实验与传统的重建方法进行比较,表明了文中方法的有效性.
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| 关 键 词： | 工业CT CT图像重建 最小区域 直线扫描转换 区域填充 |
Fast CT Image Reconstruction Based on Minimal Reconstruction Domain |
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| Zhang Shunli,Zhang Dinghua,Zhao Xinbo,Huang Kuidong.Fast CT Image Reconstruction Based on Minimal Reconstruction Domain[J].Journal of Computer-Aided Design & Computer Graphics,2009,21(2). |
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| Authors: | Zhang Shunli Zhang Dinghua Zhao Xinbo Huang Kuidong |
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| Affiliation: | Key Laboratory of Contemporary Design & Integrated Manufacturing Technology;Ministry of Education;Northwestern Polytechnical University;Xi'an 710072;Institute of Graphics and Image Processing;Xianyang Normal University;Xianyang 712000 |
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| Abstract: | Since the shape of the target objects may be very different during industrial computed tomography testing,conventional CT image reconstruction algorithms usually assume a rectangular region as the reconstruction domain.A fast image reconstruction method based on minimal region is proposed in this paper.Firstly,the envelope of the minimal projection region of the target object is obtained by using a line scan conversion algorithm on the scanned projection data.Then,a fast region filling algorithm is applied ... |
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| Keywords: | industrial computed tomography CT image reconstruction minimal region line scan conversion region filling |
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