@InProceedings{FreySadlErtl:2013:ExVoDe,
author = "Frey, Steffen and Sadlo, Filip and Ertl, Thomas",
affiliation = "{University of Stuttgart} and {University of Stuttgart} and
{University of Stuttgart}",
title = "Explorable Volumetric Depth Images from Raycasting",
booktitle = "Proceedings...",
year = "2013",
editor = "Boyer, Kim and Hirata, Nina and Nedel, Luciana and Silva,
Claudio",
organization = "Conference on Graphics, Patterns and Images, 26. (SIBGRAPI)",
publisher = "IEEE Computer Society",
address = "Los Alamitos",
keywords = "Volume Raycasting, Explorable Image, Preview and Offline
Techniques.",
abstract = "View-dependent image-based rendering techniques have become
increasingly popular as they combine the high quality of images
with the explorability of interactive techniques. However, in the
context of volume rendering, previous approaches suffer from
various shortcomings, including the limitation to surfaces,
expensive generation, and insufficient occlusion and motion
parallax impairing depth perception. In this paper, we propose
Volumetric Depth Images (VDI) to overcome these issues for
view-dependent volume visualization by an extension of the Layered
Depth Image (LDI) approach. Instead of only saving for each view
ray of one camera configuration the depth and color values for a
set of surfaces, as in LDIs, VDIs store so- called supersegments,
each consisting of a depth range as well as composited color and
opacity. This compact representation is independent from the
structure of the original data and can be generated by slight
modification of raycasters with very low overhead. VDIs can be
rendered efficiently at high quality with arbitrary camera
configurations by means of proxy frustum geometry and an efficient
depth ordering scheme. When viewing the scene from the initial
view point, VDIs produce results identical to the original
raycasting. As demonstrated by means of a prototype implementation
and data from different fields, our approach can be useful for
preview rendering and a-priori analysis in in-situ contexts among
others.",
conference-location = "Arequipa, Peru",
conference-year = "5-8 Aug. 2013",
doi = "10.1109/SIBGRAPI.2013.26",
url = "http://dx.doi.org/10.1109/SIBGRAPI.2013.26",
language = "en",
ibi = "8JMKD3MGPBW34M/3EF8FRL",
url = "http://urlib.net/ibi/8JMKD3MGPBW34M/3EF8FRL",
targetfile = "paper_final.pdf",
urlaccessdate = "2024, May 02"
}