Generalized Image Acquisition and Analysis
Volume Stylizer: Tomography-based Volume Painting
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.
Projects
State of the Art in Computational Plenoptic Imaging
In: STAR Proceedings of EUROGRAPHICS 2011.
Abstract
The plenoptic function is a ray-based model for light that includes the color spectrum as well as spatial,
temporal, and directional variation. Although digital light sensors have greatly evolved in the last years,
one fundamental limitation remains: all standard CCD and CMOS sensors integrate over the dimensions of the
plenoptic function as they convert photons into electrons; in the process, all visual information is irreversibly
lost, except for a two-dimensional, spatially-varying subset - the common photograph. In this state of the
art report, we review approaches that optically encode the dimensions of the plenpotic function transcending
those captured by traditional photography and reconstruct the recorded information computationally.
Project Page Slides Bibtex
@inproceedings{Wetzstein11:STAR,
author = {Gordon Wetzstein and Ivo Ihrke and Douglas Lanman and Wolfgang Heidrich},
title = {State of the Art in Computational Plenoptic Imaging},
booktitle = {STAR Proceedings of Eurographics},
year = 2011,
pages = {25--48},
}
author = {Gordon Wetzstein and Ivo Ihrke and Douglas Lanman and Wolfgang Heidrich},
title = {State of the Art in Computational Plenoptic Imaging},
booktitle = {STAR Proceedings of Eurographics},
year = 2011,
pages = {25--48},
}