Robust and Exhaustive Method for Symmetry Detection from Scanned Meshes

Engineering objects often exhibit symmetries on their surfaces for functionality or aesthetics. Detecting such symmetries from their scanned meshes enables advanced applications, such as feature-based CAD model reconstruction or mesh size reduction for efficient CAE. In this paper, we propose a new...

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Bibliographic Details
Published inJournal of Advanced Mechanical Design, Systems, and Manufacturing Vol. 7; no. 5; pp. 862 - 875
Main Authors MIZOGUCHI, Tomohiro, KANAI, Satoshi, DATE, Hiroaki, TANAKA, Hiroyuki
Format Journal Article
LanguageEnglish
Published The Japan Society of Mechanical Engineers 01.01.2013
Subjects
Finite element method
Laser Scanning
Lasers
Reflection
Robustness
Scanners
Surface distortion
Symmetry
Translations
X-Ray CT Scanning
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Summary:Engineering objects often exhibit symmetries on their surfaces for functionality or aesthetics. Detecting such symmetries from their scanned meshes enables advanced applications, such as feature-based CAD model reconstruction or mesh size reduction for efficient CAE. In this paper, we propose a new method for detecting a common class of symmetries in engineering, such as translation, rotation and reflection, from scanned meshes of a variety of objects ranging from mechanical parts to aesthetic products. Major advantages of our proposed method over conventional ones are considerable robustness for scanner noise and exhaustive detection of multiple symmetries from a mesh. We demonstrate its effectiveness from various experiments on scanned meshes acquired by laser or CT scanners. We also show that surface distortions or deformations on the object surfaces can be evaluated using symmetries quantitatively.
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ISSN:1881-3054
1881-3054
DOI:10.1299/jamdsm.7.862