Enhanced BRDF Modeling Using Directional Volume Scatter Terms

Abstract

Microfacet BRDF models used in computer graphics and remote sensing commonly account for surface scatter and Lambertian volume scatter, but not directional volume scatter. This work proposes directional volume scatter modeling for enhanced BRDF performance. Five directional volume models, including a semi-empirical directional volume term are incorporated into the Cook-Torrance model to improve model agreement with measurements. Results suggest incorporating a semi-empirical, Beard-Maxwell, or Oren-Nayar directional volume term can improve model fit quality by as much as 78 for high volume scatter materials. These results are expected to lead to enhanced remote sensing and scene generation.

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Document Details

Document Type
Technical Report
Publication Date
Mar 26, 2020
Accession Number
AD1110826

Entities

People

  • Michael W. Bishop

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Computer Graphics
  • Data Sets
  • Detection
  • Directional
  • Electromagnetic Radiation
  • Geometry
  • Governments
  • Graphics
  • Materials
  • Measurement
  • Optical Properties
  • Optics
  • Refractive Index
  • Remote Sensing
  • United States Government

Readers

  • Allergy and Immunology.
  • Computational Modeling and Simulation
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering