Fast digital perspective shell rendering
Carnielli, G.P.
Falcao, A.X.
Udupa, J.
Inst. de Comput., Univ. Estadual de Campinas, Sao Paulo;
This paper appears in: Computer Graphics and Image Processing, 1999. Proceedings. XII Brazilian Symposium on
Publication Date: 1999
On page(s): 105-111
Meeting Date: 10/17/1999 - 10/20/1999
Location: Campinas, Brazil
ISBN: 0-7695-0481-7
References Cited: 11
INSPEC Accession Number: 6403495
Digital Object Identifier: 10.1109/SIBGRA.1999.805715
Current Version Published: 2002-08-06
Abstract
Volume visualization methods usually require extensive storage and
time-intensive computations. To make them viable in many applications,
researchers have proposed various types of hardware-based and
software-based solutions. In most of these solutions, the rendering is
based on orthographic parallel projection. However, in applications such
as virtual endoscopy, perspective projection is necessary to allow the
observer to travel inside the structures. In this paper, we extend one
of these software-based solutions, called shell rendering, to provide
fast digital perspective projection. The main idea in digital
perspective is that each voxel should be rendered using an integer
number of pixels which is inversely proportional to the distance between
the voxel and the observer and that that distance can be discretized. We
show that the new method, called digital perspective shell rendering,
provides the same image quality as orthographic parallel
projection
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