Design of an automated extraoral photogrammetry 3D scanner

Abstract EN

Dental anatomy is a field of anatomy dedicated to the study of tooth structure, it uses 3D physical model for teeth and jaw.

Creating a computer aided design model from an existing teeth or jaw is called 3D scanning.

This can be accomplished using different techniques like: LASER, camera, and many advanced optical techniques.

In this work, Photogrammetry will be used, it is based on camera scanning technique.

The input is a set of photographs taken by a camera from a predefined positions and orientations, and the output is a 3D model of a real-world teeth or jaw.

Structure from Motion algorithm is used to 3D reconstruction from 2D images, it produces the point cloud and eventually the complete textured mesh.

Our system is closed, where it controls scanning conditions in terms of lighting and angles of captured images.