English  |  正體中文  |  简体中文  |  Items with full text/Total items : 6487/11649
Visitors : 28693636      Online Users : 120
RC Version 3.2 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/11643

Title: Interactive 3D Virtual Colonoscopy System
Authors: Lee, Tong-Yee;Lin, Ping-Hsien;Lin, Chao-Hung;Sun, Yung-Nein;Lin, Xi-Zhang
Contributors: 資訊工程學系
Date: 1999
Issue Date: 2012-06-18T02:28:01Z
Publisher: Mendeley Ltd.
Abstract: We describe a low-cost three-dimensional (3-D) virtual colonoscopy system that is a noninvasive technique for examining the entire colon and can assist physicians in detecting polyps inside the colon. Using the helical CT data and proposed techniques, we can three-dimensionally reconstruct and visualize the inner surface of the colon. We generate high resolution of video views of the colon interior structures as if the viewer's eyes were inside the colon. The physicians can virtually navigate inside the colon in two different modes: interactive and automatic navigation, respectively. For automatic navigation, the flythrough path is determined a priori using the 3-D thinning and two-pass tracking schemes. The whole colon is spatially subdivided into several cells, and only potentially visible cells are taken into account during rendering. To further improve rendering efficiency, potentially visible cells are rendered at different levels of detail. Additionally, a chain of bounding volume in each cell is used to avoid penetrating through the colon during navigation. In comparison with previous work, the proposed system can efficiently accomplish required preprocessing tasks and afford adequate rendering speeds on a low-cost PC system.
Relation: IEEE Transactions on Information Technology in Biomedicine, 3(2): 139-150
Appears in Collections:[資訊工程學系] 期刊論文

Files in This Item:

File SizeFormat
2050400910001.pdf9KbAdobe PDF533View/Open

All items in NCUEIR are protected by copyright, with all rights reserved.


DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback