Paper Info
Title
GIST: an interactive, GPU-based level set segmentation tool for 3D medical images
Abstract
While level sets have demonstrated a great potential for 3D medical image segmentation, their usefulness has been limited by two problems. First, 3D level sets are relatively slow to compute. Second, their formulation usually entails several free parameters which can be very difficult to correctly tune for specific applications. The second problem is compounded by the first. This paper describes a new tool for 3D segmentation that addresses these problems by computing level-set surface models at interactive rates. This tool employs two important, novel technologies. First is the mapping of a 3D level-set solver onto a commodity graphics card (GPU). This mapping relies on a novel mechanism for GPU memory management. The interactive rates level-set PDE solver give the user immediate feedback on the parameter settings, and thus users can tune free parameters and control the shape of the model in real time. The second technology is the use of intensity-based speed functions, which allow a user to quickly and intuitively specify the behavior of the deformable model. We have found that the combination of these interactive tools enables users to produce good, reliable segmentations. To support this observation, this paper presents qualitative results from several different datasets as well as a quantitative evaluation from a study of brain tumor segmentations.
Year
DOI
Venue
2004
10.1016/j.media.2004.06.022
Medical Image Analysis
Keywords
Field
DocType
level set,real time,memory management
Graphics,Computer vision,Segmentation,Computer science,Level set,Image processing,Image segmentation,Memory management,Artificial intelligence,Solver,Machine learning,Free parameter
Journal
Volume
Issue
ISSN
8
3
1361-8415
Citations 
PageRank 
References 
41
2.45
45
Authors
3
Name
Order
Citations
PageRank
Joshua E. Cates120917.05
Aaron E. Lefohn21692130.65
Ross Whitaker32973234.95