A user-friendly method for constructing realistic dental model based on two-dimensional/three-dimensional registration. Issue 2 (10th August 2020)

• Record Type: Journal Article
• Authors: Ke, Yongzhen; Zhao, Wenjie; Yang, Shuai; Wang, Kai; Liu, Jiaying
• Is Part Of: Engineering computations. Volume 38:Issue 2(2021)
• Page Start: 1057
• Page End: 1075
• Publication Date: 2020-08-10
• Subjects: 2D-3D registration -- 3D digital dental model -- Image pyramid -- Local contour -- Projection texture mapping; Computer-aided engineering -- Periodicals; Computer graphics -- Periodicals; 620.00285
• DOI: 10.1108/EC-01-2020-0034
• Languages: English
• ISSNs: 0264-4401

Abstract

Abstract : Purpose: This paper aims to obtain a texture dental model with real images and improve the rendering effect of the dental model. Design/methodology/approach: The paper proposes a semiautomatic method to construct a realistic dental model with real images based on two-dimensional/three-dimensional (2D/3D) registration. First, a 3D digital dental model and three intraoral images are obtained by a 3D scanner and digital single-lens reflex camera. Second, the camera projection poses for every intraoral images are calculated by using the single-objective optimization algorithm. Third, with camera poses, the preliminary projection texture mapping is performed; besides, the seam between two textures is marked. Finally, the marked regions are fused based on the image pyramid to eliminate obvious seams. Findings: The paper provides a method to construct a realistic dental model. The method can map three intraoral images to the dental model. The experimental results show that the textured dental model without obvious distortion, dislocation and seams is constructed with simple interactions. Originality/value: The proposed method can be applied to the digital smile design system to improve the communication efficiency between doctors, patients and technicians.