Information
- Publication Type: Technical Report
- Workgroup(s)/Project(s): not specified
- Date: July 1998
- Number: TR-186-2-98-20
- Keywords: perceptual based fitting, metal models, energy balance, albedo function, BRDF representation, Reflectance function
Abstract
The paper
introduces a method, called the albedo pumping-up, to derive
new, physically plausible BRDFs from an existing
one or from any symmetric function.
This operation can be applied recursively
by arbitrary number of times. An important application
of this operation is the transformation of the Phong and
Blinn models in order to make them produce
metallic effects.
The paper also examines the albedo function
of reflectance models and comes to the conclusion
that widely used models violate
energy balance at grazing angles.
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BibTeX
@techreport{Szir-1998-Pump,
title = "Analysis and Pumping of the Albedo Function",
author = "L\'{a}szl\'{o} Neumann and Attila Neumann and L\'{a}szl\'{o}
Szirmay-Kalos",
year = "1998",
abstract = "The paper introduces a method, called the albedo pumping-up,
to derive new, physically plausible BRDFs from an existing
one or from any symmetric function. This operation can be
applied recursively by arbitrary number of times. An
important application of this operation is the
transformation of the Phong and Blinn models in order to
make them produce metallic effects. The paper also examines
the albedo function of reflectance models and comes to the
conclusion that widely used models violate energy balance at
grazing angles.",
month = jul,
number = "TR-186-2-98-20",
address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria",
institution = "Institute of Computer Graphics and Algorithms, Vienna
University of Technology ",
note = "human contact: technical-report@cg.tuwien.ac.at",
keywords = "perceptual based fitting, metal models, energy balance,
albedo function, BRDF representation, Reflectance function",
URL = "https://www.cg.tuwien.ac.at/research/publications/1998/Szir-1998-Pump/",
}