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.

中文翻译：

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一种方便的基于二维/三维配准的逼真的牙科模型的构建方法

目的

本文旨在获得具有真实图像的纹理牙科模型，并提高该牙科模型的渲染效果。

设计/方法/方法

本文提出了一种基于二维/三维（2D / 3D）配准的具有真实图像的逼真的牙科模型的半自动方法。首先，通过3D扫描仪和数字单镜头反光照相机获得3D数字牙科模型和三个口腔内图像。其次，通过使用单目标优化算法来计算每个口腔图像的相机投影姿势。第三，利用相机的姿势，进行初步的投影纹理映射。此外，还标记了两个纹理之间的接缝。最后，基于图像金字塔融合标记区域以消除明显的接缝。

发现

本文提供了一种构建逼真的牙科模型的方法。该方法可以将三个口内图像映射到牙齿模型。实验结果表明，该结构简单，相互作用简单，无明显变形，错位和接缝的牙科模型。

创意/价值

所提出的方法可以应用于数字微笑设计系统，以提高医生，患者和技术人员之间的通信效率。