By Topic

An interactive fly-path planning using potential fields and cell decomposition for virtual endoscopy

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
R. C. H. Choiu ; Dept. of Comput. Sci., State Univ. of New York, Stony Brook, NY, USA ; A. E. Kaufman ; Zhengrong Liang ; Lichan Hong
more authors

Virtual colonoscopy has been developed as a noninvasive computerized medical procedure for examining the entire colon to detect polyps. Our group has successfully implemented an interactive navigation using a physically based camera control model and a hardware-assisted visibility algorithm. Unfortunately, the pre-processing (skeleton and potential field generations) consumes too much computing time to be acceptable in an interactive clinical environment. In this work, we focus on skeleton simplification by eliminating excessive inconsistent branches. The simplification is performed before skeleton generation. The idea is to utilize a hierarchical analysis to determine principal points for the skeleton. We also propose dynamic target navigation for virtual endoscopy. We combine potentials derived from the distance between source and target positions and from the distance between source and colon surface to guide path search processes. These potentials are utilized to assign priority in choosing the paths far away from colon wall and in the direction of target positions

Published in:

IEEE Transactions on Nuclear Science  (Volume:46 ,  Issue: 4 )