| RL滤波函数的改进对卷积反投影图像重建的影响 |
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| 引用本文： | 刘晓,杨朝文. RL滤波函数的改进对卷积反投影图像重建的影响[J]. 四川大学学报(自然科学版), 2004, 41(1): 112-117 |
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| 作者姓名： | 刘晓 杨朝文 |
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| 作者单位： | 四川大学物理学院,成都,610065;四川大学物理学院,成都,610065 |
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| 摘 要： | 在工业无损检测中，利用X射线CT成像的算法——卷积反投影算法对图像进行重建时，滤波函数对图像重建质量影响很大。作者利用多点平均法对RL滤波函数作了改进，发现3点平均法的滤波函数对图像的重建质量有明显的改善。
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| 关 键 词： | 滤波函数 卷积反投影算法 无损检测 |
| 文章编号： | 0490-6756(2004)01-0112-06 |
The Influence of Modified-RL Filter Function on the Quality of Image Reconstruction Using Convolution Backprojection Algorithm |
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| LIU Xiao,YANG Chao-wen. The Influence of Modified-RL Filter Function on the Quality of Image Reconstruction Using Convolution Backprojection Algorithm[J]. Journal of Sichuan University (Natural Science Edition), 2004, 41(1): 112-117 |
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| Authors: | LIU Xiao YANG Chao-wen |
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| Abstract: | The filter function in convolution backprojection algorithm of X-ray CT is very important to the quality of image reconstruction. The RL filter function is modified by multi-point average method. By computer simulation the images reconstruction are made for a model which is consisted of a Fe ball with different sizes of Pb ball, C ball and air hole within it. It is found that the three-point average method is the best one in restraining noise and eliminating false trace. |
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| Keywords: | filter function convolution backprojection algorithm nondestructive detection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
