公开(公告)号：US11563929B2

公开(公告)日：2023-01-24

申请号：US16910042

申请日：2020-06-23

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Tal Levy ,  Gal Peleg ,  Eliran Dafna ,  Sergei Ozerov ,  Tal Verker ,  Nir Makmel ,  Yossef Atiya

IPC: H04N13/204 ,  G01B11/25 ,  G06T7/521 ,  H04N1/00

Abstract: A method for generating a 3D image includes driving structured light projector(s) to project a pattern of light on an intraoral 3D surface, and driving camera(s) to capture images, each image including at least a portion of the projected pattern, each one of the camera(s) comprising an array of pixels. A processor compares a series of images captured by each camera and determines which of the portions of the projected pattern can be tracked across the images. The processor constructs a three-dimensional model of the intraoral three-dimensional surface based at least in part on the comparison of the series of images. Other embodiments are also described.

公开(公告)号：US20250032227A1

公开(公告)日：2025-01-30

申请号：US18914013

申请日：2024-10-11

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Yossef Atiya ,  Arkady Rudnitsky ,  Nir Makmel ,  Sergei Ozerov ,  Tal Verker ,  Tal Levy

IPC: A61C9/00 ,  A61B1/00 ,  A61B1/24 ,  G02B27/42 ,  G06T7/521 ,  G06T7/586 ,  G06T7/80 ,  G06T17/00 ,  H04N9/31

Abstract: An intraoral scanning system comprises an elongate handheld wand with a probe at a distal end, a structured light projector configured to project a uniform structured light pattern onto an object, a plurality of cameras configured to capture points of the uniform structured light pattern projected onto the object by the structured light projector, and one or more processors. The one or more processors are configured to determine a correspondence between projected points in the uniform structured light pattern generated by the structured light projector and captured points of the uniform structured light pattern captured by the plurality of cameras viewing the uniform structured light pattern projected onto the object, and to use triangulation and the determined correspondence to determine three-dimensional points in space associated with the captured points of the uniform structured light pattern captured by the plurality of cameras.

公开(公告)号：US20240307158A1

公开(公告)日：2024-09-19

申请号：US18605783

申请日：2024-03-14

Applicant: Align Technology, Inc.

Inventor： Tal Levy ,  Shai Ayal ,  Sergei Ozerov ,  Doron Malka

IPC: A61C9/00 ,  G06T7/00 ,  G06T17/00

CPC classification number: A61C9/0053 ,  G06T7/0012 ,  G06T17/00 ,  G06T2207/30036

Abstract: Embodiments relate to techniques for selecting images from a plurality of images generated by an intraoral scanner. A method includes receiving a plurality of images of a dental site generated by an intraoral scanner, identifying a subset of images from the plurality of images that satisfy one or more selection criteria, selecting the subset of images that satisfy the one or more selection criteria, and discarding or ignoring a remainder of images of the plurality of images that are not included in the subset of images.

公开(公告)号：US20240138961A1

公开(公告)日：2024-05-02

申请号：US18485222

申请日：2023-10-11

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Yossef Atiya ,  Arkady Rudnitsky ,  Nir Makmel ,  Sergei Ozerov ,  Tal Verker ,  Tal Levy

IPC: A61C9/00 ,  A61B1/00 ,  A61B1/24 ,  G02B27/42 ,  G06T7/521 ,  G06T7/586 ,  G06T7/80 ,  G06T17/00 ,  H04N9/31

CPC classification number: A61C9/006 ,  A61B1/00096 ,  A61B1/00172 ,  A61B1/00193 ,  A61B1/24 ,  G02B27/4222 ,  G02B27/4227 ,  G06T7/521 ,  G06T7/586 ,  G06T7/80 ,  G06T7/85 ,  G06T17/00 ,  H04N9/3161 ,  G06T2207/10024 ,  G06T2207/10028 ,  G06T2207/10052 ,  G06T2207/30036

Abstract: A dental scanning system comprises an intraoral scanner and one or more processors. The intraoral scanner comprises one or more light projectors configured to project a pattern (comprising a plurality of pattern features) on a surface of a dental object, and two or more cameras configured to acquire one or more sets of images, wherein each set of images comprises at least one image from each camera, and wherein each image includes at least a portion of the projected pattern. The processors are 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, and wherein the correspondence problem is solved for groups of pattern features, and generate a digital 3D representation of the dental object using the solution to the correspondence problem.

公开(公告)号：US20230156173A1

公开(公告)日：2023-05-18

申请号：US18156349

申请日：2023-01-18

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Tal Levy ,  Gal Peleg ,  Eliran Dafna ,  Sergei Ozerov ,  Tal Verker ,  Nir Makmel ,  Yossef Atiya

IPC: H04N13/204 ,  G06T7/521 ,  G01B11/25 ,  H04N1/00

CPC classification number: H04N13/204 ,  G06T7/521 ,  G01B11/25 ,  H04N1/00018

Abstract: An intraoral scanning system comprises and intraoral scanner and a processor. The intraoral scanner comprises one or more cameras and one or more structured light projectors, the intraoral scanner to generate a series of images using the one or more cameras, each image including at least a portion of a pattern projected by the one or more structured light projectors onto an intraoral three-dimensional surface. The processor runs a correspondence algorithm to compute respective three-dimensional positions of a plurality of features of the pattern on the intraoral three-dimensional surface, as captured in the series of images. The processor identifies the computed three-dimensional position of a detected feature of the pattern as corresponding to a particular projector ray r, in at least a subset of the series of images. The processor tracks the particular projector ray r across one or more additional images of the series of images.

公开(公告)号：US20220280269A1

公开(公告)日：2022-09-08

申请号：US17826016

申请日：2022-05-26

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Yossef Atiya ,  Arkady Rudnitsky ,  Nir Makmel ,  Sergei Ozerov ,  Tal Verker ,  Tal Levy

IPC: A61C9/00 ,  G06T7/80 ,  G02B27/42 ,  G06T17/00 ,  H04N9/31 ,  G06T7/521 ,  A61B1/00 ,  A61B1/24

Abstract: An apparatus for intraoral scanning comprises an elongate handheld wand comprising a probe at a distal end, one or more light projectors, and two or more cameras. Each light projector comprises at least one light source configured to generate light and a pattern generating optical element configured to generate a pattern of light when the light is transmitted through the pattern generating optical element. Each camera comprises a camera sensor and one or more lenses and is configured to capture a plurality of images that depict at least a portion of the projected pattern of light on an intraoral surface, wherein each camera is configured to focus at an object focal plane that is located between about 1 mm and about 30 mm from a lens of the one or more lenses that is farthest from the camera sensor.

公开(公告)号：US20190388193A1

公开(公告)日：2019-12-26

申请号：US16446181

申请日：2019-06-19

Applicant: Align Technology, Inc.

Inventor： Ofer Saphier ,  Yossef Atiya ,  Arkady Rudnitsky ,  Nir Makmel ,  Sergei Ozerov ,  Tal Verker ,  Tal Levy

IPC: A61C9/00 ,  A61B1/24 ,  G06T7/521 ,  G06T7/80 ,  A61B1/00

Abstract: An apparatus for intraoral scanning includes an elongate handheld wand that has a probe. One or more light projectors and two or more cameras are disposed within the probe. The light projectors each has a pattern generating optical element, which may use diffraction or refraction to form a light pattern. Each camera may be configured to focus between 1 mm and 30 mm from a lens that is farthest from the camera sensor. Other applications are also described.