公开(公告)号：US20240398519A1

公开(公告)日：2024-12-05

申请号：US18722168

申请日：2022-12-19

Applicant: 3SHAPE A/S

Inventor： Isak MOTTELSON ,  Henrik ÖJELUND

IPC: A61C9/00 ,  A61C13/34 ,  G06T7/521 ,  G06T7/55 ,  G06T17/00

Abstract: The present disclosure relates to a dental scanning system for generating a digital three-dimensional representation of a dental object, the system comprising an intraoral scanning device comprising one or more projector units configured to project a pattern on a surface of the dental object; and two or more cameras configured to acquire one or more sets of images; wherein the scanning system further comprises one or more processors configured to determine one or more image features within each set of images; solve a correspondence problem within each set of images such that points in 3D space are determined based on the image features, wherein said points form a solution to the correspondence problem, wherein the correspondence problem is solved for groups of pattern features; and generate a digital three-dimensional representation of the dental object, wherein the solution to the correspondence problem is used to generate the three-dimensional representation.

公开(公告)号：US20240293206A1

公开(公告)日：2024-09-05

申请号：US18591167

申请日：2024-02-29

Applicant: 3SHAPE A/S

Inventor： Henrik ÖJELUND ,  Isak MOTTELSON

IPC: A61C9/00 ,  A61B1/24 ,  A61C13/34

CPC classification number: A61C9/006 ,  A61C13/34 ,  G06T17/00

Abstract: A scanning system for generating a three-dimensional (3D) representation of an object includes: an intraoral scanning device including one or more projector units configured to project a pattern on a surface of the object; two or more camera units configured to acquire a set of images including at least one image from each camera unit, wherein each image is composed of an array of pixels, wherein each pixel includes a pixel color defined by one or more color channels; wherein the scanning system further includes one or more processors configured for: determining points in three-dimensional (3D) space that form a solution to a correspondence problem associated with the set of images, wherein the points are determined by comparing pixel colors with computed colors associated with camera rays corresponding to each pixel; and generating the three-dimensional (3D) representation based on the determined 3D points.

公开(公告)号：US20250114175A1

公开(公告)日：2025-04-10

申请号：US18903341

申请日：2024-10-01

Applicant: 3SHAPE A/S

Inventor： Christopher Prinds BILBERG ,  Isak MOTTELSON

IPC: A61C9/00 ,  G06T15/20

Abstract: The present disclosure relates to a 3D scanner system comprising an intraoral scanner comprising: an elongated housing comprising a distal end for being inserted into an oral cavity, wherein the housing comprises an aperture in a sidewall of the distal end of the housing; and a window arranged in the aperture of the housing; and/or a sleeve mounted on the outside of the elongated housing; the 3D scanner system further comprising one or more processors operatively connected to the intraoral scanner, said processors configured to receive one or more two-dimensional images comprising a plurality of pattern features, wherein the images comprises one or more artifacts arising from reflections from the window and/or sleeve; and provide the two-dimensional image(s) as input to a parameterized model trained to determine the position of at least a subset of the pattern features in the image(s), while suppressing or ignoring the artifacts.