Please use this identifier to cite or link to this item:
Title: An efficient clustering method for fast rendering of time-varying volumetric medical data
Authors: Wang, Z. 
Nguyen, B.P. 
Chui, C.-K. 
Qin, J.
Ang, C.-H. 
Ong, S.-H. 
Keywords: 4-D medical images
Time-varying volume rendering
Issue Date: Jun-2010
Citation: Wang, Z., Nguyen, B.P., Chui, C.-K., Qin, J., Ang, C.-H., Ong, S.-H. (2010-06). An efficient clustering method for fast rendering of time-varying volumetric medical data. Visual Computer 26 (6-8) : 1061-1070. ScholarBank@NUS Repository.
Abstract: Visualization and exploration of time-varying volumetric medical data help clinicians for better diagnosis and treatment. However, it is a challenge to render these data in an interactive manner because of their complexity and large size. We propose an efficient clustering method for fast compression and rendering of these large dynamic data. We divide the volumes into a set of blocks and use a BIRCH (Balanced Iterative Reducing and Clustering using Hierarchies) based algorithm to cluster them, which can usually find a high quality clustering with a single scan of the blocks. In addition, the granularity of clusters can be adaptively adjusted by dynamically configuring threshold values. In each cluster of blocks, a KeyBlock is generated to represent the cluster, and therefore the storage space of the volumes is reduced greatly. In addition, we assign a lifetime to every KeyBlock and implement a dynamic memory management scheme to further reduce the storage space. During the rendering, each KeyBlock is rendered as a KeyImage, which can be reused if the view transformation and transfer function are not changed. This reuse can help to increase the rendering speed significantly. Experimental results showed that the proposed method can achieve good performance in terms of both speed optimization and space reduction. © Springer-Verlag 2010.
Source Title: Visual Computer
ISSN: 01782789
DOI: 10.1007/s00371-010-0483-5
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Aug 19, 2019


checked on Jul 10, 2019

Page view(s)

checked on Aug 17, 2019

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.