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Sensors 2017, 17(7), 1634; https://doi.org/10.3390/s17071634

Development of Three-Dimensional Dental Scanning Apparatus Using Structured Illumination

1
Medical Photonics Research Center, Korea Photonics Technology Institute (KOPTI), Gwangju 61007, Korea
2
Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea
3
School of Information and Communications, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Korea
*
Author to whom correspondence should be addressed.
Received: 19 June 2017 / Revised: 10 July 2017 / Accepted: 12 July 2017 / Published: 15 July 2017
(This article belongs to the Special Issue Imaging Depth Sensors—Sensors, Algorithms and Applications)
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Abstract

We demonstrated a three-dimensional (3D) dental scanning apparatus based on structured illumination. A liquid lens was used for tuning focus and a piezomotor stage was used for the shift of structured light. A simple algorithm, which detects intensity modulation, was used to perform optical sectioning with structured illumination. We reconstructed a 3D point cloud, which represents the 3D coordinates of the digitized surface of a dental gypsum cast by piling up sectioned images. We performed 3D registration of an individual 3D point cloud, which includes alignment and merging the 3D point clouds to exhibit a 3D model of the dental cast. View Full-Text
Keywords: 3D intraoral scanner; structured illumination; liquid lens; 3D point cloud 3D intraoral scanner; structured illumination; liquid lens; 3D point cloud
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Ahn, J.S.; Park, A.; Kim, J.W.; Lee, B.H.; Eom, J.B. Development of Three-Dimensional Dental Scanning Apparatus Using Structured Illumination. Sensors 2017, 17, 1634.

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