From Event: SPIE Optical Engineering + Applications, 2017
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 shift of structured light. A simple algorithm, which detects intensity modulation, was used to perform optical sectioning with structured illumination. We reconstructed 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 individual 3D point cloud, which includes alignment and merging the 3D point clouds, to exhibit a 3D model of the dental cast.
Jae Sung Ahn, Anjin Park, Ju Wan Kim, Byeong Ha Lee, and Joo Beom Eom, "A three-dimensional scanning apparatus based on structured illumination method and its application in dental scanning," Proc. SPIE 10373, Applied Optical Metrology II, 103730T (Presented at SPIE Optical Engineering + Applications: August 09, 2017; Published: 23 August 2017); https://doi.org/10.1117/12.2271018.
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