Title: | Feature Preserving Volumetric Data Simplification for Application in Medical Imaging |
Authors: | Jin, C. Fevens, T. Li, S. Mudur, S. P. |
Citation: | WSCG '2005: Full Papers: The 13-th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision 2005in co-operation with EUROGRAPHICS: University of West Bohemia, Plzen, Czech Republic, p. 236-242. |
Issue Date: | 2005 |
Publisher: | UNION Agency |
Document type: | konferenční příspěvek conferenceObject |
URI: | http://wscg.zcu.cz/wscg2005/Papers_2005/Full/!WSCG2005_Full_Proceedings_Final.pdf http://hdl.handle.net/11025/10973 |
ISBN: | 80-903100-7-9 |
Keywords: | lékařské zobrazování;zjednodušení mřížky;nepravidelné tetrahedrické mřížky;míra detailu |
Keywords in different language: | medical imaging;mesh simplification;irregular tetrahedral meshes;level of detail |
Abstract: | In this paper, we propose a new simplification algorithm to reduce the large amount of redundancy in 3D medical image datasets and generate a new representation in tetrahedral meshes with considerably lower storage requirements. In the proposed algorithm, we first apply level set segmentation to partition the volume data into several homogenous sub-regions. We consider the interior boundaries between sub-regions as contributing more to the significant visible features. Next we convert the regular grid data into a tetrahedral representation and simplify the irregular volume representation by iteratively removing tetrahedra without significantly altering the exterior boundary or interior field distribution features. Within each sub-region, field gradients, tetrahedral aspect ratio changes and variances of interior region values are further used so as to maintain features of the original dataset in regional interiors. We tested our algorithm on several 3D medical datasets. The promising results show that we reduce redundancy and yet preserve important features and structures present in the original data set for decimation rates up to 50%. |
Rights: | © UNION Agency |
Appears in Collections: | WSCG '2005: Full Papers |
Please use this identifier to cite or link to this item:
http://hdl.handle.net/11025/10973
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