Apparatus and method of texture mapping for dental 3D scanner

US10347031B2 · kind B2 · utility

Assignee

• CARESTREAM DENTAL TECHNOLOGY TOPCO LIMITED · GB

Inventors

• Yingqian Wu · Shanghai, CN
• Victor C. Wong · Rochester, US
• Qinran Chen · Shanghai, CN
• Zhaohua Liu · Yangpu District, CN

Key dates

• Filing date: Sep 11, 2015
• Grant date: Jul 9, 2019
• Expiry date: Sep 11, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2210/41
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for color texture imaging of teeth with a monochrome sensor array obtains a 3-D mesh representing a surface contour image according to image data from views of the teeth. For each view, recording image data generates sets of at least three monochromatic shading images. Each set of the monochromatic shading images is combined to generate 2-D color shading images, corresponding to one of the views. Each polygonal surface in the mesh is assigned to one of a subset of the views. Polygonal surfaces assigned to the same view are grouped into a texture fragment. Image coordinates for the 3-D mesh surfaces in each texture fragment are determined from projection of vertices onto the view associated with the texture fragment. The 3-D mesh is rendered with texture values in the 2-D color shading images corresponding to each texture fragment to generate a color texture surface contour image.