光学精密工程2025，Vol.33Issue(14)：2153-2165,13.DOI:10.37188/OPE.20253314.2153
基于粗糙表面的高阶镜面反射pBRDF模型
High order specular reflection pBRDF model based on rough surface
摘要
Abstract
Based on the Micro facet theory,significant multiple specular reflections occur when light shines ona rough surface,while the traditional Polarized Bidirectional Reflectance Distribution Function(pBRDF),this phenomenon was not well described by pBRDF.In order to obtain a more accurate pBRDF model and to analyze the polarization characteristics of the material more effectively,this paper further defined the relationship between the higher-order micro-phase angle and the first-order phase angle on the basis of the three-component pBRDF model that had included specular reflection,diffuse reflection,and directional diffuse reflection.The improved pBRDF model not only considered the geometric attenua-tion factor of multiple specular reflections,but also introduced the definition of the micro-phase angle,thereby establishing a more comprehensive higher-order specular-reflection pBRDF model.By comparing different pBRDF models and verifying them with the polarization-characteristic acquisition device,the ex-perimental results showed that the model proposed in this paper was superior to other models,and the per-formance of the third-order model was generally better than that of the second-order model.In polarized image rendering,the peak signal-to-noise ratio and structural similarity increase by an average of 10.09％ and 2.97％respectively,presenting a more realistic rendering effect.It is verified that the high-order spec-ular reflection pBRDF model proposed in this paper can describe the polarization characteristics of the tar-get surface more accurately.关键词
高阶镜面反射pBRDF模型/Microfacet理论/粗糙表面/偏振特性/偏振图像渲染Key words
high order specular reflection pBRDF model/microfacet theory/roughened surface/polar-ization property/polarization image rendering分类
数理科学引用本文复制引用
段锦,丁华藤,杨嘉豪,李冠霏,史成旭,战俊彤..基于粗糙表面的高阶镜面反射pBRDF模型[J].光学精密工程,2025,33(14):2153-2165,13.基金项目
国家自然科学基金重大仪器专项(No.62127813) （No.62127813）
吉林省科技发展计划项目(No.20220508152RC) （No.20220508152RC）
