METHOD FOR ALIGNING A THREE-DIMENSIONAL MODEL OF A DENTITION OF A PATIENT TO AN IMAGE OF THE FACE OF THE PATIENT

• Main Authors: NEMANJA BARTOLOVIC, DEGEN NICOLAS, LANCELLE MARCEL, MORZINGER ROLAND, SOROS GABOR
• Format: Patent
• Language: Chinese; English
• Published: 29.09.2020
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; DENTISTRY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

Computer implemented method for aligning a three-dimensional model (6) of a patient's dentition to an image of the face of the patient recorded by a camera (3), the image including the mouth opening,comprising: estimating the positioning of the camera (3) relative to the face of the patient, retrieving the three-dimensional model (6) of the dentition of the patient, rendering a two-dimensional image (7) of the dentition of the patient using a virtual camera (8), carrying out feature detection in a dentition area in the mouth opening of the image (1) of the patient recorded by the camera (3) and in the rendered image (7), calculating a measure of deviation between the detected feature images of the image taken by the camera (3) and the detected feature image of the rendered image, and varying the positioning of the virtual camera (8). 一种用于将患者的牙列的三维模型(6)与由照相机(3)记录的患者的面部图像对准的计算机实现的方法，所述图像包括嘴部开口，包括：·估计照相机(3)相对于患者面部的定位，·获取患者的牙列的三维模型(6)，·使用虚拟照相机(8)渲染患者的牙列的二维图像(7)，·在由照相机(3)记录的患者的图像(1)的嘴部开口中的牙列区域和渲染的图像(7)中的牙列区域中执行特征检