涂漆金属1550 nm波长双向反射分布函数优化建模  

An Optimal Modeling of Bidirectional Reflectance Distribution Function for Coating Metals in 1550 nm

作　　者：王萌 严伟[1] 李振华[1] 来建成[1] 王春勇[1] 纪运景[1] Wang Meng;Yan Wei;Li Zhenhua;Lai Jiancheng;Wang Chunyong;Ji Yunjing(School of Science,Nanjing University of Science&Technology,Nanjing 210094,Jiangsu,China)

机构地区：[1]南京理工大学理学院,江苏南京210094

出　　处：《激光与光电子学进展》2022年第21期225-230,共6页Laser & Optoelectronics Progress

基　　金：科工局项目(JCKY2016606B001)。

摘　　要：利用双向反射分布函数描述目标表面的散射特性是最成熟和常用的方法,其关键在于如何快速准确地获取双向反射分布函数中的各特征参量。基于Cook-Torrance模型对目标表面散射进行建模,使用1550 nm激光对黑漆涂层金属进行探测,将测量数据用遗传-禁忌搜索混合算法进行反演,来获得模型中的未知参量。对比遗传算法和遗传-模拟退火混合算法可知,该算法优化了迭代次数,减小了计算误差,得到与实验值吻合的理论计算值。该研究提供了一种快速准确得到双向反射分布函数中未知参量的计算方法。The most mature and widely used method for describing the scattering characteristics of a target surface is to use the bidirectional reflection distribution function(BRDF).However,the key is how to quickly and accurately obtain BRDF characteristic parameters.In this study,the CookTorrance model is employed to model the scattering from a target surface,the black coating metal is detected using a 1550 nm laser,and the measured data are inversed using a genetic tabu search algorithm to obtain the unknown parameters in the model.Compared with the genetic algorithm and genetic simulated annealing algorithm,the algorithm optimizes the number of iterations,reduces the computation error,and obtains a theoretical value that matches the experimental value.This study offers a quick and accurate approach to calculating the unknown parameters in BRDF.

关 键 词：散射 双向反射分布函数 遗传算法 禁忌搜索算法 涂漆金属 

分 类 号：O432.1[机械工程—光学工程]