A study of an analysis system for predicting facial appearance after treatment

预测治疗后面部外观的分析系统的研究

• 批准号: 15390596
• 负责人: NAGAOKA Eiichi
• 金额: $ 4.35万
• 依托单位: Kagoshima University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15390596/
• 关键词: facial appearance; three-dimensional measurement; removable denture; treatment prediction; edentulous patient

The aim of this study was to develop an analysis system for predicting facial appearance after denture treatment. The system consisted of a measuring part with a 3D measuring device (Danae200, NEC Engineering) using CCD cameras, an image analysis part with image processing software (3D-Rugle4, Medic engineering) treating the facial appearance image as a wire frame model and color image, and additional software designed by us as follow. 1.Preparing two average 3D facial images using wire frame models of some facial appearances. 2.Preparing 3D difference data between the two average 3D facial images as wire frame models. 3.Preparing a deformed wire frame model by adding the difference data to the original wire frame model and mapping the color image data to the deformed model. In the present study, two average 3D wire frame models were obtained from two complete denture patients with and without their dentures. These average 3D wire frame models were used for preparing 3D difference data. A deformed wire frame model and color image data were obtained for another complete denture patient after removing the denture. A predicted facial appearance image after treatment was prepared by texture mapping the color image data to the deformed wire frame model.The predicted facial appearance image and the real facial appearance image with the new denture were very similar to each other except for the mento-labial sulcus. Furthermore, this system was applied to a maxillofacial-mandibular prosthesis patient with a partial defect of the mandible and an implant patient. In application to these patients with their respective features, this system should have additional functions to analyze particular features.

本研究的目的是开发一个分析系统，用于预测义齿治疗后的面部外观。该系统包括具有使用CCD相机的3D测量装置（Danae 200，NEC Engineering）的测量部分、具有将面部外观图像处理为线框模型和彩色图像的图像处理软件（3D-Rugle 4，Medic Engineering）的图像分析部分以及由我们设计的如下附加软件。1.准备两个平均三维人脸图像使用线框模型的一些面部外观。2.准备两个平均3D面部图像之间的3D差异数据作为线框模型。3.通过将差异数据添加到原始线框模型并将彩色图像数据映射到变形模型来准备变形线框模型。在本研究中，两个平均的三维线框模型，从两个全口义齿患者与他们的义齿。这些平均3D线框模型用于准备3D差异数据。另一位全口义齿患者在拔除义齿后，获得了变形的线框模型和彩色图像数据。通过将彩色图像数据纹理映射到变形的线框模型上，得到治疗后的面部外观预测图像，该预测图像与新义齿的真实的面部外观图像非常相似，除了颏唇沟。此外，该系统被应用于颌面下颌骨修复患者与下颌骨部分缺损和种植患者。在应用于这些具有各自特征的患者时，该系统应具有分析特定特征的附加功能。