光学学报, 2020, 40 (14): 1410001, 网络出版: 2020-07-23
基于椭圆拟合的多光斑/重叠光斑中心提取方法 下载: 1557次封面文章
Center Extraction Method of Multiple and Overlapping Faculae Based on Ellipse Fitting
图 & 表
图 1. 多光斑/重叠光斑中心提取的算法流程
Fig. 1. Flow chart of multiple facula/overlapping facula center extraction algorithm
图 6. 形状因子与椭圆扁率和光斑重叠度的关系。(a) 形状因子与椭圆扁率的关系;(b) 形状因子与光斑重叠度的关系
Fig. 6. Shape factor varying with oblateness and degree of overlap. (a) Shape factor varying with oblateness; (b) shape factor varying with degree of overlap
图 9. 真实太阳光斑。(a) 真实太阳光斑图像;(b) 单太阳光斑灰度分布图的一个截面
Fig. 9. Real solar faculae. (a) Image of real solar faculae; (b) cross section of gray value distribution of single solar facula
图 10. 部分实验的局部图像。(a)圆光斑的重叠度实验;(b)椭圆光斑的重叠度实验;(c)椭圆光斑的重叠角度实验
Fig. 10. Local images obtained by some experiments. (a) Circle faculae obtained by experiment on degree of overlap; (b) ellipse faculae obtained by experiment on degree of overlap; (c) ellipse faculae obtained by experiment on overlapping angle
表 1平均位置误差
Table1. Average position errors
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表 2平均标准差
Table2. Average standard deviationpixel
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潘登, 李艳丽, 高东, 郑建华. 基于椭圆拟合的多光斑/重叠光斑中心提取方法[J]. 光学学报, 2020, 40(14): 1410001. Deng Pan, Yanli Li, Dong Gao, Jianhua Zheng. Center Extraction Method of Multiple and Overlapping Faculae Based on Ellipse Fitting[J]. Acta Optica Sinica, 2020, 40(14): 1410001.