Generalized Image Acquisition and Analysis

Dynamic Display of BRDFs

This paper deals with the challenge of physically displaying reflectance, i.e., the appearance of a surface and its variation with the observer position and the illuminating environment. This is commonly described by the bidirectional reflectance distribution function (BRDF). We provide a catalogue of criteria for the display of BRDFs, and sketch a few orthogonal approaches to solving the problem in an optically passive way. Our specific implementation is based on a liquid surface, on which we excite waves in order to achieve a varying degree of anisotropic roughness. The resulting probability density function of the surface normal is shown to follow a Gaussian distribution similar to most established BRDF models.

Projects

State of the Art in Computational Fabrication and Display of Material Appearance.

Matthias Hullin, Ivo Ihrke, Wolfgang Heidrich, Tim Weyrich, Gerwin Damberg, Martin Fuchs
Eurographics STAR 2013



Abstract

After decades of research on digital representations of material and object appearance, computer graphics has more recently turned to the problem of creating physical artifacts with controllable appearance characteristics. While this work has mostly progressed in two parallel streams – display technologies as well as novel fabrication processes – we believe there is a large overlap and the potential for synergies between these two approaches. In this report, we summarize research efforts from the worlds of fabrication display, and categorize the different approaches into a common taxonomy. We believe that this report can serve as a basis for systematic exploration of the design space in future research.

Bibtex

@inproceedings{Hullin13:STAR,
author = {Matthias B. Hullin and Ivo Ihrke and Wolfgang Heidrich and Tim Weyrich and Gerwin Damberg and Martin Fuchs},
title = {State of the Art in Computational Fabrication and Display of Material Appearance},
booktitle = {STAR Proceedings of Eurographics},
year = 2013,
pages = {xx--yy},
}
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