计量学报2025，Vol.46Issue(5)：651-658,8.DOI:10.3969/j.issn.1000-1158.2025.05.05
生成式数据驱动BRDF参考数据库建立方法
A Method of BRDF Reference Database Establishment Based on Generated Values
摘要
Abstract
An innovative method for constructing a BRDF database grounded in measurement data and microfacet theory is introduced,and a corresponding system is developed,encompassing modules like data retrieval,normal density distribution function,occlusion factor,and model structure.Firstly,the simulated annealing algorithm is employed to optimize the angle information I as the objective function,and an investigation is conducted on the impact of different sampling angles on fitting and inversion results.Secondly,modules that can describe the characteristics of the target surface are established by disassembling and modularizing the BRDF model,and the BRDF model library can be established by the arrangement and combination of the modules.Finally,based on a small amount of measurement data,the BRDF data with high spatial resolution and reliability are generated through the selection of model,parameter setting and evaluation of inversion effect.The approach not only mitigates reliance on extensive measurement data,but also addresses the challenge of inconsistency among multiple models by establishing a framework based on a limited amount of measurement data.The results of measurement and inversion are compared with zinc hemispherical space BRDF,and the reliability of the method is verified.关键词
光学计量/双向反射分布函数/采样方式/模型库/参考数据库/微面元理论Key words
optical metrology/BRDF/sampling mode/model base/reference database/microfacet theory引用本文复制引用
刘彦磊,袁大庆,熊行创,李舒鹏,周孝好,刘子龙..生成式数据驱动BRDF参考数据库建立方法[J].计量学报,2025,46(5):651-658,8.基金项目
红外物理国家重点实验室开放课题(SITP-NLIST-ZD-2023-06) （SITP-NLIST-ZD-2023-06）
国家重点研发计划(2022YFF0604704) （2022YFF0604704）
国家科技基础条件平台课题(APT2301-6) （APT2301-6）
