基于投影缺失正弦图的CT图像重建研究
通过对不完全投影重建的图像结果和正弦图对投影空间的数据分布情况进行分析,并根据工件较敏感部位的位置、形状和密度信息,对缺失的投影数据进行适当的补充。在此基础上,利用滤波反投影算法对补充后的正弦图进行图像的重建。经过实验验证,该方法改善了重建图像的质量,得到了较好的重建效果。...
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Published in | 计算机应用研究 Vol. 32; no. 2; pp. 609 - 612 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
西北民族大学 电气工程学院,兰州 730030
2015
兰州大学 核科学与技术学院,兰州 730000%兰州大学 核科学与技术学院,兰州,730000%西北民族大学 电气工程学院,兰州,730030 |
Subjects | |
Online Access | Get full text |
ISSN | 1001-3695 |
DOI | 10.3969/j.issn.1001-3695.2015.02.065 |
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Summary: | 通过对不完全投影重建的图像结果和正弦图对投影空间的数据分布情况进行分析,并根据工件较敏感部位的位置、形状和密度信息,对缺失的投影数据进行适当的补充。在此基础上,利用滤波反投影算法对补充后的正弦图进行图像的重建。经过实验验证,该方法改善了重建图像的质量,得到了较好的重建效果。 |
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Bibliography: | 51-1196/TP CT image reconstruction; sinogram; analytical algorithm; filter back projection algorithm The results which was gotten incomplete projection reconstruction by sinagram, could analysis the distribution characteristics in space of projection data. According to the sensitive parts of the object position, shape amt density information, this paper made the appropriate supplement on the projection data. And then it reconstructed the last image utilizing the whole projection by filter back projection algorithm. Through the experiment, this method can obtain better image reconstruction results. LUO Yan-hong, LI Gong-ping , WEN Xi, XU Nan-nan( 1. College of Electrical Engineering, Northwest University for Nationalities, Lanzhou 730030, China ; 2. School of Nuclear Science & Technology, Lanzhou University, Lanzhou 730000, China ) |
ISSN: | 1001-3695 |
DOI: | 10.3969/j.issn.1001-3695.2015.02.065 |