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基于改进型Blinn遮蔽函数的目标材料表面可见光偏振反射研究

刘承麟 战俊彤 张肃 王超 付强 李英超 段锦 姜会林

刘承麟, 战俊彤, 张肃, 王超, 付强, 李英超, 段锦, 姜会林. 基于改进型Blinn遮蔽函数的目标材料表面可见光偏振反射研究[J]. 中国光学(中英文). doi: 10.37188/CO.2023-0217
引用本文: 刘承麟, 战俊彤, 张肃, 王超, 付强, 李英超, 段锦, 姜会林. 基于改进型Blinn遮蔽函数的目标材料表面可见光偏振反射研究[J]. 中国光学(中英文). doi: 10.37188/CO.2023-0217
LIU Cheng-lin, ZHAN Jun-tong, ZHANG Su, WANG Chao, FU Qiang, LI Ying-chao, DUAN Jin, JIANG Hui-lin. Research on visible polarized reflection of target material surface based on improved Blinn masking function[J]. Chinese Optics. doi: 10.37188/CO.2023-0217
Citation: LIU Cheng-lin, ZHAN Jun-tong, ZHANG Su, WANG Chao, FU Qiang, LI Ying-chao, DUAN Jin, JIANG Hui-lin. Research on visible polarized reflection of target material surface based on improved Blinn masking function[J]. Chinese Optics. doi: 10.37188/CO.2023-0217

基于改进型Blinn遮蔽函数的目标材料表面可见光偏振反射研究

doi: 10.37188/CO.2023-0217
基金项目: 国家自然科学基金(No. 62127813,No. 62375027);吉林省教育厅项目(No. JJKH20220738KJ);吉林省科技厅项目(No. 20230203029SF,No. 20210201093GX);重庆市自然科学基金(No. CSTB2023NSCO-MSX0504)
详细信息
    作者简介:

    刘承麟(1998—),男,吉林通化人,硕士研究生,2021年在长春理工大学光电信息学院获得学士学位,主要从事目标偏振特性技术、偏振探测技术方面的研究。E-mail:1533664548@qq.com

    战俊彤(1987—),女,吉林长春人,博士研究生,副教授,2016年在长春理工大学获光学工程专业工学博士学位,主要从事偏振信息处理技术、目标偏振特性技术方面的研究。E-mail:zhanjuntong@cust.edu.cn

  • 中图分类号: O436.3

Research on visible polarized reflection of target material surface based on improved Blinn masking function

Funds: Supported by
  • 摘要:

    为了研究典型目标材料表面的可见光偏振反射特性,本文针对传统“V”型表面结构缺陷,引入改进Blinn型阴影遮蔽函数,综合考虑镜面反射、漫反射和体散射影响,建立典型目标材料表面偏振六参量二向反射分布函数模型。对不同材料(聚丙烯塑料板、99氧化铝陶瓷板、铁板、绿漆铝板)目标样板进行可见光600nm波段的偏振特性测试实验,并采用遗传算法进行参数反演。实验与仿真结果表明:与传统“V”型遮蔽模型相比,在入射角为50°,相对方位角为180°,0°~60°观测角对目标材料表面偏振特性的影响中,聚丙烯塑料板模型精度提升达到最大,RMSE百分比提升了70.61%,在入射角为50°,观测角为50°,DoLP随90°~270°相对方位角变化中,与两种参考模型相比,模型精度至少提升了24.73%个百分点。线偏振度最小均方根误差值仅为1.29%。对于本文材料而言,偏振特性取决于其复折射率的值,当入射角确定,观测角为0°~60°,相对方位角0°~360°内,n/k比值越大,线偏振度峰值越大。在可见光波段,波长对线偏振度的影响不大。

     

  • 图 1  BRDF的几何关系图

    Figure 1.  Geometric relationship diagram of BRDF

    图 2  典型目标材料表面的光反射过程

    Figure 2.  Light reflection process on the surface of typical target materials

    图 3  改进Blinn型遮蔽函数原理图。

    Figure 3.  Schematic diagram of improved Blinn type masking function

    图 4  BRDF测量装置实物图

    Figure 4.  Physical diagram of BRDF measuring device

    图 5  测试材料样品实物图

    Figure 5.  Physical image of testing material samples

    图 6  入射角50°时,观测角对不同材料的影响比较

    Figure 6.  Comparison of the effect of view angle on different materials when the incident angle is 50°

    图 7  不同入射角下典型目标表面材料在2${\text{π}} $空间内的DoLP分布

    Figure 7.  DoLP distribution of typical target surface materials in 2${\text{π}} $ under different incident angles

    图 8  不同入射角下目标表面材料仿真值与实测值对比

    Figure 8.  Comparison between simulated and measured values of target surface materials at different incidence angles

    图 9  观测角与相对方位角对不同材料DoLP影响

    Figure 9.  Effect of observation angle and relative azimuth on DoLP of different materials

    图 10  入射角50°、观测角50°下,DoLP随相对方位角变化曲线

    Figure 10.  DoLP variation curve with relative azimuth at an incident angle of 50° and an observation angle of 50°

    图 11  不同目标材料波长与线偏振度的关系曲线

    Figure 11.  Relationship curve between wavelength and degree of linear polarization of different target materials

    表  1  不同目标材料参数反演结果

    Table  1.   Inversion Results of Different Target Material Parameters

    样品 $ n $ $ k $ $ \sigma $ $ c $ ${\rho _0}$ ${R_\infty }$
    聚丙烯塑料板 1.471 0.698 0.325 0.552 0.517 0.6643
    99氧化铝陶瓷板 1.713 0.596 0.283 0.732 0.4885 0.467
    铁板 2.836 3.277 0.3612 0.485 0.568 0.6942
    绿漆铝板 1.318 0.335 0.227 0.906 0.3715 0.359
    下载: 导出CSV

    表  2  不同材料表面DoLP仿真值与实测值的均方根误差

    Table  2.   Root mean square error between simulated and measured DoLP values of different material surfaces

    样品RMSE1RMSE2RMSE3百分比/%
    聚丙烯
    塑料板
    0.09360.04860.027570.61%
    43.41%
    99氧化铝
    陶瓷板
    0.04260.02740.018756.1%
    31.75%
    铁板0.05040.03160.022355.75%
    29.43%
    绿漆铝板0.02850.01880.012954.73%
    31.38%
    下载: 导出CSV

    表  3  不同材料表面DoLP仿真值与实测值的均方根误差

    Table  3.   Root mean square error between simulated and measured DoLP values of different material surfaces

    样品RMSE1RMSE2RMSE3百分比/%
    聚丙烯
    塑料板
    0.08310.05480.031262.45%
    43.07%
    99氧化铝
    陶瓷板
    0.05730.03880.022860.21%
    41.23%
    铁板0.06420.04020.024653.89%
    38.81%
    绿漆铝板0.03680.02490.017851.63%
    28.51%
    下载: 导出CSV

    表  4  不同材料表面DoLP仿真值与实测值的均方根误差

    Table  4.   Root mean square error between simulated and measured DoLP values of different material surfaces

    样品RMSE1RMSE2RMSE3百分比/%
    聚丙烯
    塑料板
    0.06130.04840.028952.85%
    40.29%
    99氧化铝
    陶瓷板
    0.04190.02950.021548.69%
    27.12%
    铁板0.03770.02810.019648.01%
    30.24%
    绿漆铝板0.02540.01820.013746.06%
    24.73%
    下载: 导出CSV
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