Modified model of polarized bidirectional reflectance distribution function for metallic surfaces

Zhu, Jingtao; Wang, Kai; Liu, Hong; Du, Biao; Guo, Fengqi

doi:10.1016/j.optlastec.2017.08.029

Cited by 16 publications

(4 citation statements)

References 8 publications

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“…is the Fresnel reflectivity, whose value is related to the polarization state [22], and is the average of the incident light vertical component reflectivity and incident light parallel component reflectivity. The Fresnel reflectivity in ( 9) is replaced [23].Then the part of the specular reflection component of the pBRDF model is obtained, and the expression is as follows:…”

Section: Fig 2 Schematic Diagram Of Simultaneous Shading and Masking ...mentioning

confidence: 99%

Target Surface pBRDF Model Optimization and Polarization Characteristics Analysis

Liu

Wang

et al. 2023

IEEE Photonics J.

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In this paper, the scattering characteristics of polarized light are studied based on the microsurface element theory, and the Polarization Bi-directional Reflection Distribution Function (pBRDF) model applicable to rough surfaces is established according to the three-component model, and the expression of polarization of reflected light from the target surface is derived based on the model, and the accuracy of the model is verified by comparing the model with the conventional model. The modeling is also carried out from the scattering perspective, and the relationship between different artificial target particle diameters and polarization characteristics is analyzed. The results show that the Degree Of Polarization (DOP) is strongly related to the detection zenith angle. The DOP of the target is largest in the direction of the mirror reflection of the source. The polarization characteristics of different materials are different, and the relative error of the established model is significantly smaller than that of the conventional model. And the scattering model can make preliminary classification of different man-made targets according to different particle diameters, which can provide theoretical support for the analysis of the polarization characteristics of the target surface.

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Section: Fig 2 Schematic Diagram Of Simultaneous Shading and Masking ...mentioning

confidence: 99%

Target Surface pBRDF Model Optimization and Polarization Characteristics Analysis

Liu

Wang

et al. 2023

IEEE Photonics J.

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“…)dω m (17) In the above formula, ω o is the vector of outgoing direction, ω m is the microfacet normal, G m is the masking function, and −, − means the clamped dot product. The geometric attenuation factor must always satisfy this constraint.…”

Section: Exp −mentioning

confidence: 99%

“…In recent years, new pBRDF theoretical models have been proposed by many researchers. In 2017 and 2018, Zhu J. et al from Xi'an Jiaotong University proposed a three-component pBRDF model [16][17][18]. The core idea is to regard the scattered light of the target as being composed of three components, which are specular reflection, directional diffuse reflection and ideal diffuse reflection.…”

Section: Introductionmentioning

confidence: 99%

Modified Model of Polarized Bidirectional Reflectance Distribution Function Used for Light Detection and Ranging (LiDAR)

Luan,

Li,

Guo

et al. 2023

Photonics

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In order to analyze the performance of a light detection and ranging system based on polarization modulation, it is necessary to theoretically analyze and model the polarization scattering characteristics of common target materials. In this paper, the shortcomings of the classical Hyde pBRDF (polarization bidirectional reflectance distribution function) model are analyzed. Based on the research results of many researchers in recent years, a new six-parameter pBRDF model is proposed. To verify the accuracy of the proposed model, this paper builds a measurement system for the polarization scattering characteristics of the target surface in the laser active imaging scene, and the polarization scattering characteristics of two common materials, namely a white paint coating and an aluminum plate, are measured. Based on the measurement results of the DOP (degree of polarization) of the scattered light of the target material and the BBO-FA (biogeography-based optimization-Firefly algorithm) algorithm, we performed inversion calculations on the key parameters of the target material. Using the parameters of the target material obtained via inversion, we use the model to simulate the Stokes vectors of the target and compare the simulated values of Stokes vectors with the measured values to verify the accuracy of the model. The verification results show that the simulation results of Stokes vectors are in good agreement with the measurement results for these two materials, and the introduction of various improvements to the model can effectively improve the accuracy of the model, which provides a tool for studying the performance parameters of a laser three-dimensional imaging system based on polarization modulation.

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“…In the study of polarization properties, the polarization effects produced by all reflection lobes should not be neglected. Zhu et al [24] successfully introduced the directional diffuse reflection lobe into the polarimetric BRDF. To accurately describe the polarization properties of surface scattering, we also refer to the recent results of Jianfeng Sun et al [25] and introduce the directional diffuse reflection component that distinguishes them for a complete analysis of the model, making the model more reliable overall.…”

Section: Introductionmentioning

confidence: 99%

Multiple Scattering Properties Based on Modified Microsurface pBRDF Model

Hao,

Duan,

Liu

et al. 2023

IEEE Photonics J.

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Scattering polarization properties are one of the main characteristics of a target. Different material types of the target surface can be expressed by the scattering polarization properties, and the use of polarization to characterise the target more effectively is a highly interesting topic. However, the existing polarized bidirectional reflection distribution function (pBRDF) based on microfacet theory for modelling light transmission over rough surfaces is not general. Modelling the scattering phenomena accurately on microsurfaces from a single specularly polarized reflection to full consideration of diffuse polarization remains a challenging task. In this work, we further introduce a directional diffuse reflection lobe to completely define the polarization properties of light in scattering, and revisit the microsurface in the masking and shadowing function part of the model, expanding the traditional symmetric V-groove structure, which is complemented by an asymmetric V-groove structure to improve the accuracy of the model description. We verify through a series of simulations and experiments that our model is in better agreement with the actual truth and that it is more suitable for describing the scattering polarization properties of most targets.

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Modified model of polarized bidirectional reflectance distribution function for metallic surfaces

Cited by 16 publications

References 8 publications

Target Surface pBRDF Model Optimization and Polarization Characteristics Analysis

Target Surface pBRDF Model Optimization and Polarization Characteristics Analysis

Modified Model of Polarized Bidirectional Reflectance Distribution Function Used for Light Detection and Ranging (LiDAR)

Multiple Scattering Properties Based on Modified Microsurface pBRDF Model

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