DocumentCode :
1819300
Title :
Volume haptic rendering with dynamically extracted isosurface
Author :
Corenthy, Loic ; Martin, Jose San ; Otaduy, Miguel A. ; Garcia, Marcos
Author_Institution :
Univ. Politec. de Madrid, Madrid, Spain
fYear :
2012
fDate :
4-7 March 2012
Firstpage :
133
Lastpage :
139
Abstract :
Haptic interfaces offer an intuitive way to interact with and manipulate 3D data, and may simplify the interpretation of visual information. This work proposes an algorithm to provide haptic feedback directly from volumetric data sets, as an aid to regular visualization. The haptic rendering algorithm lets the user perceive isosurfaces in the volumetric data, and it relies on several design features that ensure a robust and efficient rendering. Robustness is derived from existing proxy-based methods. The presented algorithm adds a novel continuous collision detection based on dynamic extraction of isosurfaces in tetrahedral meshes in order to avoid fall-through of surfaces. The isosurface is extracted dynamically in a local manner, hence there is no need to construct and store the full isosurface, thereby reducing both computational cost and storage at the same time. Isosurfaces are defined by interpolating a density field on tetrahedral meshes. The use of tetrahedral meshes guarantees continuity and watertightness of the isosurface, and it also enables smooth transitions between isosurface values.
Keywords :
haptic interfaces; rendering (computer graphics); 3D data manipulation; continuous collision detection; density field; dynamic extraction; haptic feedback; haptic interface; isosurface values; isosurface watertightness; tetrahedral meshes; user perceive isosurfaces; visual information; volume haptic rendering algorithm; volumetric data sets; Algorithm design and analysis; Haptic interfaces; Heuristic algorithms; Hip; Isosurfaces; Rendering (computer graphics); Robustness;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Haptics Symposium (HAPTICS), 2012 IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4673-0808-3
Electronic_ISBN :
978-1-4673-0807-6
Type :
conf
DOI :
10.1109/HAPTIC.2012.6183781
Filename :
6183781
Link To Document :
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