NSSC OpenIR  > 空间科学部
Alternative TitleDeduction of the global density of the plasmasphere reconstructed from the observation images using computer tomography technique -Incomplete projection data
黄娅; 徐荣栏; 沈超; 李亮; 陈志强; huang_ya2006@yahoo.com.cn
Source Publication地球物理学报
Keyword地球等离子体层密度 投影数据不完备 总变差 代数迭代算法
Other AbstractIn deduction of the global density of Earth plasmasphere from its column density by using Computer Tomography (CT) technique, one of the main issues is that the projection data is not theoretically sufficient for exact image reconstruction. We develop an improved iterative reconstruction algorithm based on the minimization of the image total variation. The high quality image is achieved by using this method to reconstruct the meridian plane, which has the most various insufficient data problems. Their reconstruction quality has been analyzed through the correlation coefficient between the Phantom Diagram and the reconstruction results. To match IMAGE satellite, we focus on the limited angular range of 90°. For this angle, the value of this method is 0. 760 while iterative reconstruction algorithm method is only 0. 696. The result reveals that the method of iterative reconstruction algorithm based on the minimization of the image total variation is more efficient when the Phantom Diagram includes earth's shelter and limited angular range.
Indexed BySCI ; CSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Authorhuang_ya2006@yahoo.com.cn
Recommended Citation
GB/T 7714
黄娅,徐荣栏,沈超,等. 利用计算机断层成像方法由观测图像重建等离子体层全球密度分布投影数据不完备问题[J]. 地球物理学报,2012,55(4):1071-1077.
APA 黄娅,徐荣栏,沈超,李亮,陈志强,&huang_ya2006@yahoo.com.cn.(2012).利用计算机断层成像方法由观测图像重建等离子体层全球密度分布投影数据不完备问题.地球物理学报,55(4),1071-1077.
MLA 黄娅,et al."利用计算机断层成像方法由观测图像重建等离子体层全球密度分布投影数据不完备问题".地球物理学报 55.4(2012):1071-1077.
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