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Interactive volume isosurface rendering using BT volumes

Content Provider	ACM Digital Library
Author	Kloetzli, John Rheingans, Penny Olano, Marc
Abstract	This paper presents a volume representation format called BT Volumes, along with a technique to interactively render them and two methods to create useful data in BT Volume format, including high quality reconstruction filtering. Medical applications rely heavily on isosurface data to visualize anatomy, but current real-time iso-surface rendering techniques such as Marching Cubes are limited in flexibility and provide only low-order linear reconstruction filtering. As an alternative to creating triangular geometry to represent the surface, we ray trace an exact isosurface directly inside a pixel shader. We construct a set of Bézier Tetrahedra to approximate any reconstruction filter with arbitrary footprint. We then precompute the volume convolved with this filter as a tetrahedral grid with Bézier weights that can be ray traced in graphics hardware. Our technique is fast, renders any isosurface level without additional work, and performs high quality reconstruction filtering with arbitrary footprints and reconstruction kernels.
Starting Page	45
Ending Page	52
Page Count	8
File Format	PDF
ISBN	9781595939838
DOI	10.1145/1342250.1342257
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-02-15
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Isosurface rendering Bt volumes Graphics hardware Interactive Ray tracing Real time Bézier tetrahedra Volume rendering
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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