期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2006
卷号：XXXVI Part 5
出版社：Copernicus Publications
摘要：Orthodontic prosthetics is dealing with dental deformity problems that may occur in a variety of oral cavity diseases and is trying to fix the aesthetic behavior using appropriate surgical operations or therapies. Prerequisite to the proper surgery planning and the application of the optimal treatment is the correct documentation of the dental problem, which is currently performed using conventional measuring techniques of questionable precision and accuracy. Especially, the lip line projection on the upper jawbone, which is determining the amount of the gingivas' exposure is a criterion of good aesthetic impression, and should be recorded in the best possible accuracy. Further processing should follow in order to create the detailed diagrams of the lip line in several expression of the mouth, presenting the current dental condition of the normal mouth behavior. The conventional measuring techniques (using a calibrated ruler or any other device that measures the distance between two district points) that are currently used cannot provide a secure documentation result due to their inability to record the overall 3D object model together with a strictly estimated accuracy. However, the use of stereoscopic image processing of image stereopairs that have been previously oriented (in terms of the exterior and relative location) can be used to record the projection line of the lip on the upper jawbone. The image stereopairs are recorded in several different mouth attitudes and are relatively compared and interpreted by the specialist doctors. This paper is describing a research attempt to create an integrated phorogrammetric environment having the highest degree of automation on a series of image stereopairs to extract the geometry of the dental features that provide the problematic situation of a patient's denture
关键词：close range photogrammetry; medical; denture; lips
