Real-Time Volume Rendering for Virtual ColonoscopyS
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Date
2001
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present a volume rendering system that is capable of generating high-quality images of large volumetric data (e.g., 512<sup>3</sup>) in real time (30 frames or more per second). The system is particularly suitable for applications that generate densely occluded scenes of large data sets, such as virtual colonoscopy. The central idea is to divide the volume into sets of axis-aligned slabs. The union of the slabs approximates the shape of a colon. We render sub-volumes enclosed by the slabs and blend the slab images. We use the slab structure to accelerate volume rendering in various aspects. First, empty voxels outside the slabs are skipped. Second, fast view-volume clipping and occlusion culling are applied based on the slabs. Third, slab images are reused for nearby viewpoints. In addition, the slabs can be created very efficiently and they can be used to approximate perspective rendering with parallel projection, so that our system can benefit from fast parallel projection hardware and algorithms. We use image-warping to reduce the artifacts due to the approximation.
Description
@inproceedings{:10.2312/VG/VG01/369-381,
booktitle = {Volume Graphics},
editor = {K. Mueller and A. Kaufman},
title = {{Real-Time Volume Rendering for Virtual ColonoscopyS}},
author = {Li, Wei and Kaufman, Arie and Kreeger, Kevin},
year = {2001},
publisher = {The Eurographics Association},
ISSN = {1727-8376},
ISBN = {3-211-83737-X},
DOI = {/10.2312/VG/VG01/369-381}
}