| FFT在CT图像重建中的应用 |
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| 引用本文： | 赵生妹,王绍棣,蒋大真.FFT在CT图像重建中的应用[J].南京邮电大学学报(自然科学版),1993(2). |
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| 作者姓名： | 赵生妹 王绍棣 蒋大真 |
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| 作者单位： | 南京邮电学院，南京邮电学院，中国科学院上海原子核研究所 201800 |
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| 摘 要： | 本文阐述利用快速傅里叶变换(FFT)进行CT图像重建的算法(即FFT算法)的原理及实现该算法的软件设计。为了提高重建图像的精度,又利用FFT填充特性对算法加以改进,还研究了FFT算法过程中的相位修正问题,最后给出了FFT算法对实验数据的重建结果。
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| 关 键 词： | 图像处理 放射X线断层摄影 快速傅里叶变换 |
The Application of FFT in CT Reconstructed Algorithm |
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| Zhao Shengmei Wang Shaodi.The Application of FFT in CT Reconstructed Algorithm[J].Journal of Nanjing University of Posts and Telecommunications,1993(2). |
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| Authors: | Zhao Shengmei Wang Shaodi |
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| Abstract: | This paper has described the basic theory FFT and the designing of the algorithm software, and the FFT has been improved by padding, phase correction and filtering which to eliminate image distortion such as aliasing and artifacts in the image are emphasized in the discussion. The experimental results have shown that the mage from FFT can be compared with the image from conventional reconstruction method Filter Backprojection with less reconstructed time. (5. illus. , 4refs.) |
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| Keywords: | Image processing Tomograph FFT |
| 本文献已被 CNKI 等数据库收录！ |
