光谱学与光谱分析
光譜學與光譜分析
광보학여광보분석
SPECTROSCOPY AND SPECTRAL ANALYSIS
2014年
9期
2351-2354
,共4页
戴庞达%张玉钧%鲁昌华%周毅%王京丽%肖雪
戴龐達%張玉鈞%魯昌華%週毅%王京麗%肖雪
대방체%장옥균%로창화%주의%왕경려%초설
夜间能见度%曲线演化%双光源%反演算法
夜間能見度%麯線縯化%雙光源%反縯算法
야간능견도%곡선연화%쌍광원%반연산법
Night visibility%Curve evolution%Dual light sources%Inversion algorithm
提出一种基于双光源方法和曲线演化理论的夜间能见度反演算法。首先从双光源夜间能见度观测的特点出发,分析了目标物亮度变化情况与特征演化曲线之间的相互关系。接着引入水平集方法同时定义多个目标物亮度特征,建立了水平集函数与能见度反演的关系模型,并给出了算法的具体表达式。实验结果表明,反演算法具有很强鲁棒性,在2000~12000 m观测范围内能见度反演值与标准能见度值的相关性均大于0.98,可以用于对夜间能见度远距离、高精度的观测。
提齣一種基于雙光源方法和麯線縯化理論的夜間能見度反縯算法。首先從雙光源夜間能見度觀測的特點齣髮,分析瞭目標物亮度變化情況與特徵縯化麯線之間的相互關繫。接著引入水平集方法同時定義多箇目標物亮度特徵,建立瞭水平集函數與能見度反縯的關繫模型,併給齣瞭算法的具體錶達式。實驗結果錶明,反縯算法具有很彊魯棒性,在2000~12000 m觀測範圍內能見度反縯值與標準能見度值的相關性均大于0.98,可以用于對夜間能見度遠距離、高精度的觀測。
제출일충기우쌍광원방법화곡선연화이론적야간능견도반연산법。수선종쌍광원야간능견도관측적특점출발,분석료목표물량도변화정황여특정연화곡선지간적상호관계。접착인입수평집방법동시정의다개목표물량도특정,건립료수평집함수여능견도반연적관계모형,병급출료산법적구체표체식。실험결과표명,반연산법구유흔강로봉성,재2000~12000 m관측범위내능견도반연치여표준능견도치적상관성균대우0.98,가이용우대야간능견도원거리、고정도적관측。
In the present paper ,we propose a novel night visibility inversion algorithm .The key idea is based on the curve evolu-tion theory in the context of dual light sources .First ,we describe the features of the dual light sources night visibility inversion method ,and explain the relationship between fluctuation of light source intensity and curve evolution with the special characters . Then ,level set method is introduced ito define the light source intensity and establish the model with visibility inversion ,and the algorithm formula is detailed .Experiments results show that ,the algorithm is characterized with a strong robustness and com-pared with the standard visibility ,the correlation of visibility result reaches up to 0.98 in the range of 2 000 meter to 12 000 me-ter ,which can be used in the visibility monitoring with a large range ,high precision and strong robustness .