DEVICE AND METHOD FOR AUTOMATICALLY MATCHING ORAL SCAN DATA AND COMPUTED TOMOGRAPHY IMAGE BY MEANS OF CROWN SEGMENTATION OF ORAL SCAN DATA

Disclosed is a device, for matching oral scan data, comprising a first matching unit, a teeth segmentation unit, and a second matching unit. The first matching unit matches a coordinate system of three-dimensional oral scan data to a coordinate system of a three-dimensional oral computed tomography...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SONG, Bo Hyun, LEE, Sung Min, JUNG, Hong
Format: Patent
Sprache:eng ; fre ; kor
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Disclosed is a device, for matching oral scan data, comprising a first matching unit, a teeth segmentation unit, and a second matching unit. The first matching unit matches a coordinate system of three-dimensional oral scan data to a coordinate system of a three-dimensional oral computed tomography (CT) image by using three-dimensional feature points of the three-dimensional oral scan data and three-dimensional feature points of the three-dimensional oral CT image. The teeth segmentation unit segments teeth from the three-dimensional oral scan data on the basis of the three-dimensional feature points of the three-dimensional oral scan data to generate surface information relating to the segmented teeth. The second matching unit matches the three-dimensional oral scan data and the three-dimensional oral CT image, which have matching coordinate systems, by means of the surface information. L'invention divulgue concerne un dispositif, pour mettre en correspondance des données de balayage oral, comprenant une première unité de mise en correspondance, une unité de segmentation de dents et une seconde unité de mise en correspondance. La première unité de mise en correspondance met en correspondance un système de coordonnées de données de balayage oral tridimensionnel et un système de coordonnées d'une image de tomodensitométrie (CT) orale tridimensionnelle en utilisant des points caractéristiques tridimensionnels des données de balayage oral tridimensionnel et des points caractéristiques tridimensionnels de l'image CT orale tridimensionnelle. L'unité de segmentation de dents segmente les dents des données de balayage oral tridimensionnel sur la base des points caractéristiques tridimensionnels des données de balayage oral tridimensionnel pour générer des informations de surface relatives aux dents segmentées. La seconde unité de mise en correspondance met en correspondance les données de balayage oral tridimensionnel et l'image CT orale tridimensionnelle, qui ont des systèmes de coordonnées correspondants, au moyen des informations de surface. 제1 정합부, 치아 분할부 및 제2 정합부를 포함하는 구강 스캔 데이터 정합 장치가 개시된다. 제1 정합부는 3차원 구강 스캔 데이터의 3차원 특징점과 3차원 구강 컴퓨터 단층촬영(Computed Tomography, CT) 이미지의 3차원 특징점을 이용하여 상기 3차원 구강 스캔 데이터의 좌표계를 상기 3차원 구강 CT 이미지의 좌표계에 일치시킨다. 치아 분할부는 상기 3차원 구강 스캔 데이터의 3차원 특징점에 기초하여 상기 3차원 구강 스캔 데이터에서 치아를 분할하여 분할된 치아에 대한 표면 정보를 생성한다. 제2 정합부는 상기 표면 정보를 이용하여 좌표계가 일치된 3차원 구강 스캔 데이터와 3차원 구강 CT 이미지를 정합한다.