公开(公告)号：US20240252289A1

公开(公告)日：2024-08-01

申请号：US18608267

申请日：2024-03-18

Applicant: 3SHAPE A/S

Inventor： Henrik ÖJELUND ,  Asger Vejen HOEDT ,  Karl-Josef HOLLENBECK

IPC: A61C9/00 ,  G06N3/08 ,  G06T17/00

CPC classification number: A61C9/0073 ,  G06N3/08 ,  G06T17/00 ,  G06T2210/41

Abstract: A method for generating a digital 3D representation of at least a part of an intraoral cavity, the method including recording a plurality of views containing surface data representing at least the geometry of surface points of the part of the intraoral cavity using an intraoral scanner; determining a weight for each surface point at least partly based on scores that are measures of belief of that surface point representing a particular type of surface; executing a stitching algorithm that performs weighted stitching of the surface points in said plurality of views to generate the digital 3D representation based on the determined weights; wherein the scores for the surface points are found by at least one score-finding algorithm that takes as input at least the geometry part of the surface data for that surface point and surface data for points in a neighbourhood of that surface point.

公开(公告)号：US20250120793A1

公开(公告)日：2025-04-17

申请号：US18910846

申请日：2024-10-09

Applicant: 3SHAPE A/S

Inventor： Asger Vejen HOEDT

IPC: A61C9/00

Abstract: A computer-implemented method for improving the accuracy of a three-dimensional (3D) representation of a jaw, the method including obtaining a first digital 3D representation of at least a part of a first jaw; obtaining a second digital 3D representation of at least a part of a second jaw; combining several 3D frames generated for a number of different views of the jaws in occlusion, wherein each 3D frame includes data expressing the geometry of at least a part of the jaws in occlusion; and correcting the first digital 3D representation by adjusting the position of one or more surface points belonging to the first digital 3D representation based on the position of 3D frames associated with the third digital 3D representation, whereby the accuracy of the first digital 3D representation is improved.

公开(公告)号：US20220172430A1

公开(公告)日：2022-06-02

申请号：US17434205

申请日：2020-02-25

Applicant: 3SHAPE A/S

Inventor： Jens Peter TRÄFF ,  Jens Christian JØRGENSEN ,  Alejandro Alonso DIAZ ,  Mathias Bøgh STOKHOLM ,  Asger Vejen HOEDT

IPC: G06T17/20 ,  G06T11/00 ,  G06T9/00 ,  G06V10/774 ,  G06T19/20 ,  G06T7/00 ,  G16H30/40 ,  A61C9/00 ,  A61C7/00 ,  A61C13/00

Abstract: A computer-implemented method for generating a 2D or 3D object, including training an autoencoder on a first set of training data to identify a first set of latent variables and generate a first set of output data; training an hourglass predictor on a second set of training data, where the hourglass predictor encoder converts a set of related but different training input data to a second set of latent variables, which decode into a second set of output data of the same type as the first set of output data; and using the hourglass predictor to predict a 2D or 3D object of the same type as the first set of output data based on a 2D or 3D object of the same type as the second set of input data.

公开(公告)号：US20240212278A1

公开(公告)日：2024-06-27

申请号：US18390173

申请日：2023-12-20

Applicant: 3SHAPE A/S

Inventor： Jens Peter TRÄFF ,  Jens Christian JØRGENSEN ,  Alejandro Alonso DIAZ ,  Mathias Bøgh STOKHOLM ,  Asger Vejen HOEDT

IPC: G06T17/20 ,  A61C7/00 ,  A61C9/00 ,  A61C13/00 ,  G06T7/00 ,  G06T9/00 ,  G06T11/00 ,  G06T17/00 ,  G06T19/20 ,  G06V10/774 ,  G16H30/40

CPC classification number: G06T17/20 ,  A61C7/002 ,  A61C9/0053 ,  A61C13/0004 ,  A61C13/0019 ,  G06T7/0012 ,  G06T9/002 ,  G06T11/00 ,  G06T17/00 ,  G06T19/20 ,  G06V10/7747 ,  G16H30/40 ,  G06T2207/30036 ,  G06T2210/41 ,  G06T2219/2021

Abstract: A computer-implemented method for generating a 2D or 3D object, including training an autoencoder on a first set of training data to identify a first set of latent variables and generate a first set of output data; training an hourglass predictor on a second set of training data, where the hourglass predictor encoder converts a set of related but different training input data to a second set of latent variables, which decode into a second set of output data of the same type as the first set of output data; and using the hourglass predictor to predict a 2D or 3D object of the same type as the first set of output data based on a 2D or 3D object of the same type as the second set of input data.

公开(公告)号：US20210106409A1

公开(公告)日：2021-04-15

申请号：US16970036

申请日：2019-02-08

Applicant: 3SHAPE A/S

Inventor： Henrik ÖJELUND ,  Asger Vejen HOEDT ,  Karl-Josef HOLLENBECK

IPC: A61C9/00 ,  G06T17/00 ,  G06N3/08

Abstract: A method for generating a digital 3D representation of at least a part of an intraoral cavity, the method including recording a plurality of views containing surface data representing at least the geometry of surface points of the part of the intraoral cavity using an intraoral scanner; determining a weight for each surface point at least partly based on scores that are measures of belief of that surface point representing a particular type of surface; executing a stitching algorithm that performs weighted stitching of the surface points in said plurality of views to generate the digital 3D representation based on the determined weights; wherein the scores for the surface points are found by at least one score-finding algorithm that takes as input at least the geometry part of the surface data for that surface point and surface data for points in a neighbourhood of that surface point.