公开(公告)号：US20230293272A1

公开(公告)日：2023-09-21

申请号：US18136831

申请日：2023-04-19

Applicant: Align Technology, Inc.

Inventor： Tal Verker ,  Adi Levin ,  Ofer Saphier ,  Maayan Moshe

IPC: A61C9/00 ,  G01B11/24 ,  G02B23/24 ,  G02B21/00 ,  G02B27/00 ,  G02B23/26

CPC classification number: A61C9/0066 ,  G01B11/24 ,  G02B23/2446 ,  G02B21/006 ,  G02B27/0025 ,  G02B23/2461 ,  G02B23/26

Abstract: Calibrating an intraoral scanner includes obtaining reference data of a reference three-dimensional (3D) representation of a calibration object and obtaining, based on the intraoral scanner being used by a user to scan the 3D calibration object, and from one or more device to real-world coordinate transformations of two-dimensional (2D) images of the 3D calibration object, measurement data. Calibrating the intraoral scanner further includes aligning the measurement data to the reference data to obtain alignment data and updating, based on the alignment data, said one or more transformations.

公开(公告)号：US20230141733A1

公开(公告)日：2023-05-11

申请号：US18151260

申请日：2023-01-06

Applicant: Align Technology, Inc.

Inventor： Avi Kopelman ,  Adi Levin ,  Eric Paul Meyer ,  Elad Zeiri ,  Amir Ashkenazi ,  Ron Ganot ,  Sergei Ozerov ,  Inna Karapetyan

IPC: A61C9/00 ,  A61B90/00 ,  G16H50/50 ,  A61B34/10 ,  A61C1/08 ,  A61B34/00 ,  A61C19/04 ,  A61B34/20 ,  G16H50/20 ,  G16H20/40 ,  G16H40/60 ,  A61C5/44 ,  G06F3/01 ,  G16H30/20 ,  G16H30/40 ,  G06V10/75 ,  G06V40/16 ,  A61B1/00 ,  A61C1/00 ,  A61C7/00 ,  A61C19/05 ,  G06T19/00 ,  A61B5/00 ,  G06T17/00 ,  G09B23/28

CPC classification number: A61C9/0053 ,  A61B90/36 ,  G16H50/50 ,  A61B34/10 ,  A61C1/082 ,  A61B34/25 ,  A61C19/04 ,  A61B34/20 ,  G16H50/20 ,  G16H20/40 ,  G16H40/60 ,  A61C5/44 ,  G06F3/011 ,  A61C9/0046 ,  A61C9/004 ,  G16H30/20 ,  G16H30/40 ,  G06V10/758 ,  G06V40/171 ,  A61B1/000094 ,  A61B1/000096 ,  A61C1/0015 ,  A61C7/002 ,  A61C19/05 ,  G06T19/006 ,  A61B5/0088 ,  G06T17/00 ,  G09B23/283 ,  A61B5/7455 ,  A61B2017/00216

Abstract: A system comprises an image capture device, an augmented reality (AR) display to display, and a processing device. The processing deice receives image data of a dental arch from the image capture device and processes the image data using a plurality of detection rules, where each detection rule detects one or more dental conditions. The processing device determines a dental condition for the dental arch based on the processing, determines a position of an area of interest on the dental arch, wherein the area of interest is associated with the dental condition, generates a visual overlay comprising an indication of the dental condition at the position of the area of interest, and outputs the visual overlay to the AR display, wherein the visual overlay is superimposed over a view of the dental arch on the AR display at the position of the area of interest.

公开(公告)号：US11612326B2

公开(公告)日：2023-03-28

申请号：US16875960

申请日：2020-05-15

Applicant: Align Technology, Inc.

Inventor： Adi Levin

IPC: G06K9/00 ,  A61B5/00 ,  A61C9/00 ,  H04L9/40 ,  A61B1/00 ,  A61B1/06 ,  A61B1/24 ,  A61C1/08

Abstract: Embodiments for estimating a surface texture of a tooth are described herein. One method embodiment includes collecting a sequence of images utilizing multiple light conditions using an intra-oral imaging device and estimating the surface texture of the tooth based on the sequence of images.

公开(公告)号：US20230068727A1

公开(公告)日：2023-03-02

申请号：US17894096

申请日：2022-08-23

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Shai Ayal ,  Sergei Ozerov ,  Maayan Moshe ,  Sergey Chezhin ,  Konstantin Kryzhanovsky ,  Pavel Agniashvili ,  Sergey Gagarin ,  Ilya Arkhipovskiy ,  Avi Kopelman ,  Leon Rasovsky ,  Michael Sabina ,  Adi Levin

IPC: A61C9/00 ,  G06T5/00 ,  G06T5/50 ,  G06T7/70 ,  G06T7/00 ,  G06T17/20

Abstract: Embodiments relate to techniques for real-time and post-scan visualization of intraoral scan data, which may include 3D images, 3D scans, 3D surfaces and/or 3D models. In one embodiment, an intraoral scanning system comprises a plurality of image sensors to periodically generate a set of intraoral two-dimensional (2D) images, wherein for each set of intraoral 2D images each image sensor of the plurality of image sensors is to generate an intraoral 2D image, and wherein relative positions and orientations of the plurality of image sensors are known. The intraoral scanning system further comprises a computing device, wherein the computing device is to perform the following for each set of intraoral 2D images: generate a combined intraoral image based on merging the set of intraoral 2D images together during scanning; and output the combined intraoral image to a display.

公开(公告)号：US20220257353A1

公开(公告)日：2022-08-18

申请号：US17740113

申请日：2022-05-09

Applicant: Align Technology, Inc.

Inventor： Tal Verker ,  Adi Levin ,  Ofer Saphier ,  Maayan Moshe

IPC: A61C9/00 ,  G01B11/24 ,  G02B23/24 ,  G02B21/00 ,  G02B27/00 ,  G02B23/26

Abstract: A method comprises obtaining reference data about a 3D calibration object, the reference data comprising known coordinates for a plurality of points on the object, and obtaining measurement data comprising measurements for the plurality of points on the object, the measurement data having been generated based on scanning of the object by an uncalibrated intraoral scanner. The method comprises comparing the measurement data to the reference data to determine differences therebetween and applying the determined differences between the measurement data and the reference data for the plurality of points to a function to generate a compensation model that compensates for one or more inaccuracies of the intraoral scanner. The compensation model is then stored, wherein the compensation model causes the intraoral scanner to be a calibrated intraoral scanner and is usable to correct measurement errors of the intraoral scanner caused by the one or more inaccuracies of the intraoral scanner.

公开(公告)号：US11321817B2

公开(公告)日：2022-05-03

申请号：US16808298

申请日：2020-03-03

Applicant: Align Technology, Inc.

Inventor： Adi Levin

IPC: A61B1/24 ,  G06T5/00 ,  A61C9/00 ,  G06T7/20 ,  A61B6/14 ,  G06T7/38

Abstract: The present disclosure provides computing device implemented methods, computing device readable media, and systems for motion compensation in a three dimensional scan. Motion compensation can include receiving three-dimensional (3D) scans of a dentition, estimating a motion trajectory from one scan to another, and calculating a corrected scan by compensating for the motion trajectory. Estimating the motion trajectory can include one or more of: registering a scan to another scan and determining whether an amount of movement between the scans is within a registration threshold; determining an optical flow based on local motion between consecutive two-dimensional (2D) images taken during the scan, estimating and improving a motion trajectory of a point in the scan using the optical flow; and estimating an amount of motion of a 3D scanner during the scan as a rigid body transformation based on input from a position tracking device.

公开(公告)号：US20220023015A1

公开(公告)日：2022-01-27

申请号：US17492453

申请日：2021-10-01

Applicant: Align Technology, Inc.

Inventor： Tal Verker ,  Adi Levin ,  Ofer Saphier ,  Maayan Moshe

IPC: A61C9/00 ,  G01B11/24 ,  G02B23/24 ,  G02B21/00 ,  G02B27/00 ,  G02B23/26

Abstract: A system comprises alight source to provide light, an optical system comprises focusing optics to focus the light onto a focal surface, a detector to measure returning light that is reflected off of a three dimensional object, a translation mechanism to displace the focal surface along an imaging axis defined by the optical path, and one or more processor. The one or more processor is to generate measurement data comprising coordinates of a plurality of surface points of the three dimensional object based on the measured returning light; adjust the coordinates of the subset of the plurality of surface points along up to three axes to correct the measurement data so as to remove inaccuracies caused by changes in magnification at the focal surface; and generate a three dimensional model of the three dimensional object using corrected measurement data.

公开(公告)号：US20210353153A1

公开(公告)日：2021-11-18

申请号：US17390856

申请日：2021-07-30

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Pavel Agniashvili ,  Moti Ben-Dov ,  Ran Katz ,  Avi Kopelman ,  Maxim Volgin ,  Doron Malka ,  Avraham Zulti ,  Pavel Veryovkin ,  Maayan Moshe ,  Ido Tishel ,  Adi Levin ,  Shai Farkash ,  Inna Karapetyan ,  Dina Bova ,  Edi Fridman ,  Jonathan Coslovsky

IPC: A61B5/00 ,  G06T17/20

Abstract: A processing device receives a plurality of intraoral scans of a dental arch. The processing device determines, from the plurality of intraoral scans, a first set of intraoral scans that depict a restorative object and a second set of intraoral scans that fail to depict any restorative object. The processing device generates a multi-resolution three-dimensional model of the dental arch, wherein a first portion of the multi-resolution three-dimensional model is generated from the first set of intraoral scans, has a first resolution and represents the restorative object, and wherein a second portion of the multi-resolution three-dimensional model is generated from the second set of intraoral scans, has a second resolution and represents a remainder of the dental arch, wherein the first resolution is greater than the second resolution.

公开(公告)号：US20200337560A1

公开(公告)日：2020-10-29

申请号：US16923990

申请日：2020-07-08

Applicant: Align Technology, Inc.

Inventor： Avi Kopelman ,  Michael Sabina ,  Adi Levin ,  Mikhail Minchenkov ,  Maria Anufrienko

IPC: A61B5/00 ,  A61C7/00 ,  A61C13/34 ,  A61C9/00 ,  A61B6/14 ,  A61B6/00 ,  G06T7/55 ,  G06T7/579 ,  A61B1/24 ,  G06T7/33 ,  A61B6/03

Abstract: In embodiments, a first 3D model of a patient's teeth based on first intraoral scan data taken at a first time is processed to recognize the teeth in the first 3D model. A second 3D model of the patient's teeth based on second intraoral scan data taken at a second time is processed to recognize the teeth in the second 3D model. The first 3D model is compared to the second 3D model and a plurality of AOIs in the second virtual 3D model representative of at least one of tooth wear, tooth breakage, tooth movement, gingival recession or gingival swelling are determined based on the comparison. The teeth recognized in the first 3D model are compared to the teeth recognized in the second 3D model, and one or more AOIs in the second virtual 3D model representative of tooth wear or tooth breakage are determined based on the comparison.

公开(公告)号：US20200330194A1

公开(公告)日：2020-10-22

申请号：US16842645

申请日：2020-04-07

Applicant: Align Technology, Inc.

Inventor： Adi Levin

IPC: A61C9/00 ,  A61B1/00 ,  A61B1/24

Abstract: Methods and systems for scanning an intraoral cavity of a patient provide capturing one or more viewfinder images of the intraoral cavity and scanning the intraoral cavity with an intraoral scanner to generate one or more topography scans of the intraoral cavity. The one or more topography scans may correspond to the one or more viewfinder images. The methods and systems further provide capturing a viewfinder image of a portion of the intraoral cavity, the viewfinder image overlapping with the one or more viewfinder images. An area of overlap of the viewfinder image with the one or more viewfinder images can be determined. One or more indicators of the area of overlap can be displayed on one or more locations of a display in order to provide guidance for positioning a field of view of the intraoral scanner.