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Experimentally validated modification to Cook-Torrance BRDF model for improved accuracy

机译:经实验验证的对Cook-Torrance BRDF模型的修改,以提高准确性

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摘要

The BRDF describes optical scatter off realistic surfaces. The microfacet BRDF model assumes geometric optics but is computationally simple compared to wave optics models. In this work, MERL BRDF data is fitted to the original Cook-Torrance microfacet model, and a modified Cook-Torrance model using the polarization factor in place of the mathematically problematic cross section conversion and geometric attenuation terms. The results provide experimental evidence that this modified Cook-Torrance model leads to improved fits, particularly for large incident and scattered angles. These results are expected to lead to more accurate BRDF modeling for remote sensing.
机译:BRDF描述了实际表面上的光学散射。微面BRDF模型采用几何光学,但与波动光学模型相比,计算简单。在这项工作中,将MERL BRDF数据拟合到原始的Cook-Torrance微面模型,以及使用极化因子代替数学上有问题的横截面转换和几何衰减项的改进的Cook-Torrance模型。结果提供了实验证据,表明这种改进的Cook-Torrance模型可改善拟合度,尤其是对于大入射角和散射角。预期这些结果将导致更精确的BRDF遥感建模。

著录项

  • 来源
    《Earth observing systems XXII》|2017年|1040214.1-1040214.8|共8页
  • 会议地点 San Diego(US)
  • 作者单位

    Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA;

    Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA,Southwestern Ohio Council for Science and Education, 3155 Research Blvd, Kettering, OH 45420, USA;

    Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA,Oak Ridge Institute for Science and Education, 4692 Millenium Drive, Suite 101, Belcamp, MD 21017, USA;

    Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson AFB, OH 45433-7765, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    BRDF; microfacet; remote sensing; scene generation;

    机译:BRDF;微面遥感;场景生成;

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