以前照方式进行 LAMOST光纤位置检测的光点提取研究

摘要

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 ex-tracting, some new patterns such as iterative method to calculate the background threshold, shape feature constraint to distin-guish 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.%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。