摘要
为了使LAMOST(大天区多目标光纤光谱天文望远镜)能够使用前照法检测光纤定位单元位置,需要将前照法拍摄所得到的图片进行光点提取,从而便于之后与单元实际位置进行匹配。在研究光点提取过程中,提出迭代法计算背景阈值,改进的8点联通法搜索光斑,形状特征约束区分干扰光斑等新方法。有效的解决了前照法检测过程中所得干扰光斑数量众多,位置随机,不易处理等问题。并通过现场实验证明新型的光点提取方法满足LAMOST使用的需要。
It is needed that extracting position of light spot which extraction by front illuminate with its theoretical positions to make sure LAMOST（ Large sky area multi-object fiber spectroscopy telescope） can be used. During the study of position extracting,some new patterns such as iterative method to calculate the background threshold,shape feature constraint to distinguish the interference light spot,which based on the old one and more appropriate to front illuminate method are presented.With the new method,problems that being found in matching of front illuminate method such as excessive amounts of light spots,random location,complicated calculations had been solved effectively. Also it is verified through the field experiments.
出处
《机械研究与应用》
2014年第3期166-168,171,共4页
Mechanical Research & Application
基金
国家基金委国际合作与交流项目"中国参与第四代暗能量项目BigBoss"
关键词
光学测量
LAMOST
前照法
迭代法
形状特征
位置匹配
optical measurement
LAMOST
iteration method
front illuminate method
shape feature
position extracting
