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Accurate physics-based polarimetric BRDF / Ingmar G.E. Renhorn, Tomas Hallberg, and Glenn D. Boreman

Author
Renhorn, Ingmar G.E.
Additional Titles
Accurate physics-based polarimetric bidirectional reflectance distribution function
Published
Bellingham, Washington (1000 20th St. Bellingham WA 98225-6705 USA) : SPIE, 2023.
Physical Description
1 online resource (50 pages) : illustrations
Additional Creators
Hallberg, Tomas, Boreman, G. D. (Glenn D.), and Society of Photo-Optical Instrumentation Engineers
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Restricted to subscribers or individual electronic text purchasers.
Contents
Preface -- Notation and Acronyms -- 1 Introduction -- 2 Basic Radiometry -- 2.1 Diffuse scattering -- 2.2 Rough-surface scattering -- 3 Reflectance Factor -- 4 Summary of BRDF Models -- 5 Directional Hemispherical Reflectance -- 6 Comparison to Experimental Observations -- 7 Discussion of Basic Model -- 8 Efficient Implementation -- 9 Geometry of Polarimetric Scattering -- 10 Discussion -- References
Summary
"Scattering from surfaces continue to be an important area of research where both accuracy and ease of use are needed. Surface properties of interest vary from diffuse (Lambertian) to specular (mirror). The effort here is to, based on and guided by basic physical optics, derive a limited set of rather accurate models that can be used for the majority of materials by only varying a set of parameters. The two basic models are addressing the scattering from Lambertian type surfaces with a correlation length shorter than the wavelength, here called diffuse surfaces and from surfaces with a correlation length of the order of the wavelength or longer, here called rough surfaces. These two basic models cover a large class of surfaces. Thus, in most cases only two BRDF functions have to be used, which makes the modelling and the simulations very efficient. If the diffuse part of scattering can be approximated with the Lambertian approach, then only the rough part of the surface scattering description requires a more sophisticated model. The scattering properties of the rough surface can be calculated using two lookup vectors and one lookup table. The lookup vectors are connected to the Fresnel s- and p-polarized reflectance and the lookup table is connected to the angular spread function. In some cases, the angular spread function can be also characterized by a vector. These features should make the model attractive for simulations and other computationally intense applications."--
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Genre(s)
ISBN
9781510663213 PDF
Related Titles
SPIE digital library
Bibliography Note
Includes bibliographical references.
Other Forms
Also published in print version.
Technical Details
Mode of access: World Wide Web.
System requirements: Adobe Acrobat Reader.
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