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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
以测量数据为基础,结合微面元理论提出了一种双向反射分布函数(BRDF)参考数据库建立方法,并开发了相应的系统,包括数据读取、法线密度分布函数、遮挡因子、模型结构。首先,采用模拟退火算法以角度信息量I模拟为目标函数,研究了不同采样角度个数对拟合和反演效果的影响;其次,采用将BRDF模型拆解并模块化的方式建立了能够描述目标表面信息的模块,通过各个模块的组合建立BRDF模型库;最后,以少量的测量数据为基础,通过模型的选择、参数的设定、反演效果的评定等环节生成可靠的BRDF数据。该方法一方面能够减弱对海量测量数据的依赖,另一方面以少量的测量数据为“框架”有效避免了多模型的不一致性。以锌的半球空间BRDF为实例对测量和反演结果进行了对比,验证了该方法的可靠性。
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.
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
optical metrology / BRDF / sampling mode / model base / reference database / microfacet theory
| 1 |
|
| 2 |
刘彦磊. 双向反射分布函数测量技术与实验系统的研究 [D]. 北京: 北京理工大学, 2018.
|
| 3 |
|
| 4 |
汪骏发, 高晓萍, 陈志峰, 等. 多角度遥感及其航空成像仪 [J]. 红外与毫米波学报, 2001, 20(5): 329-334.
|
| 5 |
|
| 6 |
|
| 7 |
|
| 8 |
|
| 9 |
王虎, 陈钦芳, 马占鹏, 等.杂散光抑制与评估技术发展与展望(特邀)[J].光子学报, 2022, 51(7): 125-180.
|
| 10 |
李云梅. 水稻BRDF模型集成与应用研究 [D]. 杭州: 浙江大学, 2001.
|
| 11 |
曹运华, 吴振森, 张涵璐, 等. 粗糙目标样片光谱双向反射分布函数的实验测量及其建模 [J]. 光学学报, 2008, 28(4): 792-798.
|
| 12 |
吴振森, 韩香娥, 张向东, 等. 不同表面激光双向反射分布函数的实验研究 [J]. 光学学报, 1996, 16(3): 262-268.
|
| 13 |
|
| 14 |
|
| 15 |
李卓然, 李雨霄, 刘子龙. 近红外波段高精度BRDF测量系统研究 [J]. 光学学报, 2022, 42 (12): 177-184.
|
| 16 |
|
| 17 |
马博伦, 田爱玲, 王红军, 等. 卫星光通信系统中金属结构件的表面散射特性研究 [J].激光与光电子学进展, 2023, 60(1): 115-122.
|
| 18 |
邓辰阳, 廖宁放, 李亚生, 等. 基于散射光谱加和性的金属漆颜料制品的光谱双向反射分布函数重建研究 [J]. 光谱学与光谱分析, 2023, 43(7): 2043-2049.
|
| 19 |
|
| 20 |
黄俊梅, 乔延利, 易维宁, 等. 角度采样间隔对获取草地BRDF特性的影响 [J]. 量子电子学报, 2005, 22(4): 653-656.
|
| 21 |
张腾, 游冬琴, 闻建光, 等. 二向反射遥感反演最优角度采样方法研究 [J]. 遥感技术与应用, 2023, 38 (1): 66-77.
|
| 22 |
|
| 23 |
|
| 24 |
|
| 25 |
|
| 26 |
|
| 27 |
|
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