Information
- Publication Type: Technical Report
- Workgroup(s)/Project(s): not specified
- Date: April 2001
- Number: TR-186-2-01-08
- Keywords: Virtual Endoscopy, Volume Rendering
Abstract
The majority of virtual endoscopy techniques tries to simulate a
real endoscopy. A real endoscopy does not always give the optimal
information due to the physical limitations it is subject to. In
this paper, we deal with the unfolding of the surface of the colon
as a possible visualization technique for diagnosis and polyp
detection. A new two-step technique is presented which deals with
the problems of double appearance of polyps and nonuniform
sampling that other colon unfolding techniques suffer from. In the
first step, a distance map from a central path induces nonlinear
rays for unambiguous parameterization of the surface. The second
step compensates for locally varying distortions of the unfolded
surface. A technique similar to magnification fields in
information visualization is hereby applied. The technique
produces a single view of a complete virtually dissected colon.
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BibTeX
@techreport{Vilanova-2001-VCU,
title = "Virtual Colon Unfolding",
author = "Anna Vilanova i Bartroli and Rainer Wegenkittl and Andreas
K\"{o}nig and Eduard Gr\"{o}ller",
year = "2001",
abstract = "The majority of virtual endoscopy techniques tries to
simulate a real endoscopy. A real endoscopy does not always
give the optimal information due to the physical limitations
it is subject to. In this paper, we deal with the unfolding
of the surface of the colon as a possible visualization
technique for diagnosis and polyp detection. A new two-step
technique is presented which deals with the problems of
double appearance of polyps and nonuniform sampling that
other colon unfolding techniques suffer from. In the first
step, a distance map from a central path induces nonlinear
rays for unambiguous parameterization of the surface. The
second step compensates for locally varying distortions of
the unfolded surface. A technique similar to magnification
fields in information visualization is hereby applied. The
technique produces a single view of a
complete virtually dissected colon.",
month = apr,
number = "TR-186-2-01-08",
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 = "Virtual Endoscopy, Volume Rendering",
URL = "https://www.cg.tuwien.ac.at/research/publications/2001/Vilanova-2001-VCU/",
}