Journal
SENSORS
Volume 17, Issue 7, Pages -Publisher
MDPI AG
DOI: 10.3390/s17071634
Keywords
3D intraoral scanner; structured illumination; liquid lens; 3D point cloud
Funding
- Industrial Strategic Technology Development Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [10048888]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10048888] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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.
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