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太阳高分辨观测图像与全日面像的高精度配准方法
Alternative TitleHigh-accuracy Registration Method of Solar High-resolution Observation Images and Full-disk Solar Images
冯涛1; 戴伟1; 王瑞2; 季凯帆1,2
Source Publication天文研究与技术(Astronomical Research & Technology)
2018-01
Volume15Issue:1Pages:69-77
DOI10.14005/j.cnki.issn1672-7673.20171102.003
ClassificationP182.2
Contribution Rank第2完成单位
Indexed ByCSCD
Keyword太阳图像配准 高分辨图像 全日面图像
Abstract

在太阳观测研究中,高分辨图像与全日面像的配准是一项非常有意义的工作,但由于他们之间存在着旋转、缩放和平移,因此很难高精度地进行匹配。提出一种结合局部统计信息和控制点匹配的图像配准方法,核心思想为将视场等间隔划分为大量重叠的局部区域,通过相关匹配在全日面像上寻找对应的局部区域,然后计算每一对局部区域间的亚像元偏移,根据偏移量确定每一对特征点的坐标位置,据此作为点匹配中的特征控制点;最后根据控制点建立仿射变换的转换方程,采用最小二乘求解整个视场的转换参数,根据解出的参数重新对图像进行迭代,得到收敛后的结果并进行配准。通过对高分辨观测图像和全日面SDO/HMI连续谱图像进行配准,拟合结果的偏差在0.25”以内。 

Other Abstract

In the research of the Solar observation, the registration between high-resolution observation images and full-disk Solar images is a greatly meaningful work. However, it is difficult to register with high accuracy due to the rotation, scaling and translation between them. This paper presents an image registration method combining local statistical information and control point matching: At first, between the high-resolution observation image and the full-disk Solar image is preliminary estimated about the orientation, scale, and positional parameters. Then the images are pretreated based on the estimated parameters. And then the pretreatment of the field of view is divided into a large number of overlapping local regions equally. Each corresponding local area is determined by the Correlation matching on the full-disk after preprocessing. Next, the sub-pixel offset between each pair of local regions is then measured, and the coordinate positions of the feature point are determined according to the sub-pixel offset between each pair of local regions, which is used as the feature control point in the point matching. Finally, the conversion equations of the affine transformation are established according to the control point, then use the least squares to solve the entire field of view of the transformation parameters. The image is  0.25 arc-seconds.

Funding Project国家自然科学基金[11573012]
Funding Organization国家自然科学基金[11573012]
Language中文
Subject Area天文学 ; 太阳与太阳系 ; 太阳与太阳系其他学科
MOST Discipline Catalogue理学 ; 理学::天文学
ISSN1672-7673
CSCD IDCSCD:6153484
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/11879
Collection抚仙湖太阳观测站
Corresponding Author季凯帆
Affiliation1.昆明理工大学云南省计算机技术应用重点实验室, 云南, 昆明, 650500
2.中国科学院云南天文台, 云南, 昆明, 650011
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
冯涛,戴伟,王瑞,等. 太阳高分辨观测图像与全日面像的高精度配准方法[J]. 天文研究与技术(Astronomical Research & Technology),2018,15(1):69-77.
APA 冯涛,戴伟,王瑞,&季凯帆.(2018).太阳高分辨观测图像与全日面像的高精度配准方法.天文研究与技术(Astronomical Research & Technology),15(1),69-77.
MLA 冯涛,et al."太阳高分辨观测图像与全日面像的高精度配准方法".天文研究与技术(Astronomical Research & Technology) 15.1(2018):69-77.
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