YNAO OpenIR  > 天体测量及应用研究组
Alternative TitleAn Image Processing System for a Multi-Function Astronomical Theodolite
张益恭1; 李彬华1; 杨磊2,3; 程向明2,3
Source Publication天文研究与技术(Astronomical Research & Technology)
ClassificationTP391. 4
Contribution Rank第2完成单位
Indexed ByCSCD
Keyword多功能天文经纬仪 图像处理系统 编程 算法 定心


Other Abstract

A new Multi-Function Astronomical Theodolite has been built in the Yunnan Observatory. Its main imaging device is a digital CCD camera without cooling. This paper presents an image processing system for the Multi-Function Astronomical Theodolite. The system is used to determine the centers of the stellar profiles in images obtained by the theodolite. The algorithm of the image-processing system includes two main parts, for searching the star and centering the star (object-centering),respectively. An image obtained with this instrument is unusual as it includes only one star. This makes it possible to adopt an efficient searching algorithm for the system. This is to smooth the image with a suitable method, then find the maximum-value pixel as the initial location of the center of the star. After comparing commonly used centering methods in astrometry for the adaptability,accuracy,calculation amount,and programming difficulty,we decide to use the method of two-dimensional modified moments as the object-centering method. The paper shows a block diagram of the image processing system and a program flowchart of the corresponding software written in the VC++. The paper also shows the main design of the program, a screenshot of the user interface of the software, and results of using the object-centering method to a star, an artificial stellar profile, and an aperture profile (which is through the axis collimator on the instrument). The paper finally presents a brief analysis of these results.

Funding Project国家自然科学天文联合基金[10978013] ; 云南省专项基金[YOHZ021001] ; 昆明市科技合作重大项目[10H100102]
Funding Organization国家自然科学天文联合基金[10978013] ; 云南省专项基金[YOHZ021001] ; 昆明市科技合作重大项目[10H100102]
Subject Area天文学 ; 天文学其他学科 ; 电子、通信与自动控制技术 ; 计算机科学技术
MOST Discipline Catalogue理学 ; 理学::天文学 ; 工学 ; 工学::电子科学与技术(可授工学、理学学位) ; 工学::信息与通信工程 ; 工学::控制科学与工程
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author李彬华
Affiliation1.昆明理工大学信息工程与自动化学院, 云南, 昆明, 650500
2.中国科学院云南天文台, 云南, 昆明, 650011
3.中国科学院天体结构与演化重点实验室, 云南, 昆明, 650011
Recommended Citation
GB/T 7714
张益恭,李彬华,杨磊,等. 多功能天文经纬仪图像处理系统[J]. 天文研究与技术(Astronomical Research & Technology),2014,11(1):65-71.
APA 张益恭,李彬华,杨磊,&程向明.(2014).多功能天文经纬仪图像处理系统.天文研究与技术(Astronomical Research & Technology),11(1),65-71.
MLA 张益恭,et al."多功能天文经纬仪图像处理系统".天文研究与技术(Astronomical Research & Technology) 11.1(2014):65-71.
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