Generalized Image Acquisition and Analysis
Measuring BRDFs of Immersed Materials
We investigate the effect of immersing real-world materials
into media of different refractive indices. We show, that
only some materials follow the Fresnel-governed
behaviour. In reality, many materials exhibit unexpected
effects such as stronger localized highlights or a
significant increase in the glossy reflection due to
microgeometry. In this paper, we propose a new measurement
technique that allows for measuring the BRDFs of materials
that are immersed into different media.
Projects
Volume Stylizer: Tomography-based Volume Painting
I3D 2013
Abstract
Volumetric phenomena are an integral part of standard
rendering, yet, no suitable tools to edit characteristic
properties are available so far. Either simulation results
are used directly, or modifications are high-level, e.g.,
noise functions to influence appearance. Intuitive artistic
control is not possible.
We propose a solution to stylize single-scattering
volumetric effects. Emission, scattering and extinction
become amenable to artistic control while preserving a
smooth and coherent appearance when changing the
viewpoint. Our approach lets the user define a number of
target views to be matched when observing the volume from
this perspective. Via an analysis of the volumetric
rendering equation, we can show how to link this problem to
tomographic reconstruction.
Video Slides Bibtex
@inproceedings{Klehm:13,
author = {Oliver Klehm and Ivo Ihrke and Hans-Peter Seidel and Elmar Eisemann},
title = {Volume Stylizer: Tomography-based Volume Painting},
booktitle = {Symposium on Interactive 3D Graphics and Games (i3D'13)},
year = 2013,
pages = {xx--yy},
}
author = {Oliver Klehm and Ivo Ihrke and Hans-Peter Seidel and Elmar Eisemann},
title = {Volume Stylizer: Tomography-based Volume Painting},
booktitle = {Symposium on Interactive 3D Graphics and Games (i3D'13)},
year = 2013,
pages = {xx--yy},
}