材料表面偏振双向反射分布函数模型修正  

Modified Model of Polarized Bidirectional Reflectance Distribution Function on Material Surface

作　　者：汪杰君[1,2] 王鹏[1,2] 王方原[1,2] 叶松 王新强[1,2] WANG Jie-jun;WANG Peng;WANG Fang-yuan;YE Song;WANG Xin-qiang(School of Electronic Engineering and Automation,Guilin University of Electronic Technology, Guilin,Guangxi 541004,China;Key Laboratory of Photoelectric Information Processing, Guangxi Universities,Guilin, Guangxi 541004, China)

机构地区：[1]桂林电子科技大学电子工程与自动化学院,广西桂林541004 [2]桂林电子科技大学广西光电信息处理重点实验室,广西桂林541004

出　　处：《光子学报》2019年第1期67-74,共8页Acta Photonica Sinica

基　　金：国家自然科学基金(No.41561079);广西光电信息处理重点实验主任基金(No.GD18104;18105);广西自动检测技术与仪器重点实验室主任基金(No.YQ17106);广西中青年教师基础能力提升项目(No.2017KY0192)~~

摘　　要：为表征物体表面偏振散射特性对目标偏振信息提取的影响,基于微面元散射模型结合KubelMunk理论,综合考虑镜面散射和漫散射,构建一种改进的偏振双向反射分布函数(pBRDF)模型,得到物体表面散射光的偏振度与材料复折射率、方位角、探测角和入射波长等因素的数学模型,并利用该模型对基础材料的复折射率进行反演.结合实际应用利用FD-1665偏振成像仪在不同影响因子条件下对目标表面进行了一系列偏振探测实验.最后将数值模拟结果和实测数据进行比较,其材料偏振特性曲线与实测数据吻合,表明修正后的模型有较高的精确度,该模型可以为后续的偏振监测和目标识别工作提供理论支持.A modified polarization bidirectional reflectance distribution function model was proposed based on the combination of the micro surface scattering model and the Kubel-Munk theory,which combines the mirror scattering and diffuse scattering to characterize the effect of the polarization scattering characteristics of the surface of the object on the extraction of the target polarization information.The mathematical model of complex refractive index,azimuth angle,detection angle and incident wavelength is used to inverse the complex refractive index of the base material.In combination with practical applications,a series of polarization detection experiments were carried out on the target surface under different influence factors by using FD-1665polarimetric imager.Finally,the numerical simulation results are compared with the measured data.The polarization characteristic curve of the material is in agreement with the measured data.It shows that the revised model has high accuracy.The model can provide theoretical support for the follow-up polarization monitoring and target recognition.

关 键 词：偏振 双向反射分布函数 散射偏振 偏振成像 偏振探测 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]