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公开(公告)号：US11994379B2
公开(公告)日：2024-05-28
申请号：US17719489
申请日：2022-04-13
Applicant: Carl Zeiss Vision International GmbH
Inventor： Jörg Carls , Oliver Schwarz
CPC classification number: G01B11/2545 , B24B9/144 , G02C13/003 , G06T7/11 , G06T7/97 , G06V10/44
Abstract: A method for determining a contour of a frame groove in a rim of a spectacle frame includes illuminating the rim, capturing a plurality of images of the illuminated rim from different predetermined perspectives, evaluating the captured images, and determining a spatial curve of the frame groove based on the evaluated images. The rim is illuminated along the entire circumference of the rim by directed illumination. Moreover, the evaluation of the captured images includes assigning each portion contained in the captured images to a respective surface element of the frame groove on the basis of at least one of the following properties: shadowing of the respective portion, brightness of the respective portion and phase angle of the illumination of the respective portion. Moreover, an apparatus, a computer program, a method for grinding a spectacle lens, and a computer-implemented method for determining a geometry of a spectacle lens are disclosed.
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公开(公告)号：US20220252906A1
公开(公告)日：2022-08-11
申请号：US17721630
申请日：2022-04-15
Applicant: Carl Zeiss Vision International GmbH
Inventor： Oliver Schwarz , Armin Eichert
Abstract: A spectacle frame element is individualized by adapting a parametric model of the spectacle frame element to the head of a spectacles-wearer. A parametric substitution model, having at least one parameter, for the parametric model of the spectacle frame element is determined by specifying a plurality of instances of the parametric model in the form of realizations of the parametric model using concrete parameter values, at least one basic instance and at least one parametric deformation map for the at least one basic instance are determined from the predefined instances, the at least one parametric deformation map mapping the at least one basic instance to instances of the parametric model, and the parametric substitution model being determined at least from the at least one basic instance and the at least one parametric map.
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公开(公告)号：US20200319482A1
公开(公告)日：2020-10-08
申请号：US16908473
申请日：2020-06-22
Applicant: Carl Zeiss Vision International GmbH
Inventor： Oliver Schwarz , Tobias Breuninger
Abstract: A method for adjusting spectacles in which a virtual fitting process of a parametric frame model of a spectacle frame on a 3D model of the head of a person, to whom the spectacles are to be fitted, is divided into two fitting procedures. In a first fitting procedure, the parametric frame model is adjusted to the 3D model of the head to meet specific fitting guidelines for the parametric frame model. Fitting guidelines of this nature may be specified by a frame manufacturer to comply with aesthetic criteria in the fitting. Anatomic fitting is then performed in the second fitting procedure.
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4.发明申请公开(公告)号：US20190271858A1
公开(公告)日：2019-09-05
申请号：US16418844
申请日：2019-05-21
Applicant: Carl Zeiss Vision International GmbH , Carl Zeiss AG
Inventor： Claudia Nieuwenhuis , Oliver Schwarz
Abstract: A computer-implemented method for establishing the representation of the edge of a spectacle lens or of a left spectacle lens and a right spectacle lens for a spectacle wearer is disclosed. The method includes: providing image data relating to the spectacle wearer with a worn spectacle frame; calculating information data derived from the image data; calculating a deterministically optimizable cost function linking the information data with spectacle lens data, wherein the spectacle lens data describe the spatial extent of at least one spectacle lens held in the spectacle frame; and setting a curve of an edge of the spectacle lens or of the left spectacle lens and the right spectacle lens by optimizing the cost function.
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公开(公告)号：US11480816B2
公开(公告)日：2022-10-25
申请号：US17105980
申请日：2020-11-27
Applicant: Carl Zeiss Vision International GmbH , Carl Zeiss AG
Inventor： Claudia Nieuwenhuis , Oliver Schwarz
Abstract: Centration parameters for fitting spectacle lenses to a predetermined spectacle frame and to the head of a subject are determined with a computer-implemented method. At least two calibrated images, recorded from different recording directions, of the head of the subject wearing the spectacle frame are provided, wherein geometric parameters are established by geometric position determination. The geometric parameters describe the position of the eyes and the geometry of the spectacle frame, and the centration parameters are calculated from the geometric parameters. Further, a three-dimensional model for the spectacle lenses, which are to be received in the spectacle frame, is fitted to the geometry of the geometric parameters that describe the geometry of the spectacle frame.
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Patent Agency Ranking
公开(公告)号：US20220316870A1
公开(公告)日：2022-10-06
申请号：US17719489
申请日：2022-04-13
Applicant: Carl Zeiss Vision International GmbH
Inventor： Jörg Carls , Oliver Schwarz
Abstract: A method for determining a contour of a frame groove in a rim of a spectacle frame includes illuminating the rim, capturing a plurality of images of the illuminated rim from different predetermined perspectives, evaluating the captured images, and determining a spatial curve of the frame groove based on the evaluated images. The rim is illuminated along the entire circumference of the rim by directed illumination. Moreover, the evaluation of the captured images includes assigning each portion contained in the captured images to a respective surface element of the frame groove on the basis of at least one of the following properties: shadowing of the respective portion, brightness of the respective portion and phase angle of the illumination of the respective portion. Moreover, an apparatus, a computer program, a method for grinding a spectacle lens, and a computer-implemented method for determining a geometry of a spectacle lens are disclosed.
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公开(公告)号：US20210165250A1
公开(公告)日：2021-06-03
申请号：US17171043
申请日：2021-02-09
Applicant: Carl Zeiss Vision International GmbH , Carl Zeiss AG
Inventor： Tobias Breuninger , Holger Wegendt , Oliver Schwarz , Jeremias Gromotka
IPC: G02C13/00
Abstract: A depth information detection device detects an item of depth information relating to a user's head, including a distance from the user's head to the device. On the basis of this depth information and, if applicable, additional information such as images, an evaluation device determines the desired parameters for fitting the spectacles, such as centering parameters.
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公开(公告)号：US20210165245A1
公开(公告)日：2021-06-03
申请号：US17173565
申请日：2021-02-11
Applicant: Carl Zeiss Vision International GmbH
Inventor： Oliver Schwarz , Ivo Ihrke
Abstract: A virtual try-on process for spectacles includes an approximate positioning and a fine positioning of a spectacle frame on a head of a user. Provided for this purpose are 3D models of the head and the spectacle frame, as well as head metadata based on the model of the head and frame metadata based on the model of the frame. The head metadata contains placement information, in particular a placement point, which can be used for the approximate positioning of the spectacle frame on the head, and/or a placement region which describes a region of the earpiece part of the frame for placement on the ears of the head. A rapid and relatively simple computational positioning of the spectacle frame on the head and a more accurate positioning using a subsequent precise adjustment can be achieved with the aid of the metadata.
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公开(公告)号：US10942375B2
公开(公告)日：2021-03-09
申请号：US16523027
申请日：2019-07-26
Applicant: Carl Zeiss Vision International GmbH , Carl Zeiss AG
Inventor： Cristina Alvarez Diez , Tobias Breuninger , Michael Gamperling , Oliver Schwarz , Frank Widulle
Abstract: A device for determining centering parameters for the adjustment of spectacles includes a camera support partially surrounding an inner area that is open at the top, bottom and to the rear; and at least three cameras arranged between two free ends of the camera support and pointing towards the inner area, the camera support having an illumination system in order to illuminate the inner area. The illumination system is designed to light the inner area such that the light intensity, at least at each point in a region extending over a height of 20 cm and a central angle of 180 degrees of an outer cylinder surface having a diameter of 20 cm and formed in the inner area, deviates by a maximum +50% and −30% from a predefined desired value.
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公开(公告)号：US20180214022A1
公开(公告)日：2018-08-02
申请号：US15881367
申请日：2018-01-26
Applicant: Carl Zeiss Vision International GmbH , Carl Zeiss AG
Inventor： Claudia Nieuwenhuis , Oliver Schwarz , Michael Gamperling
CPC classification number: A61B3/14 , A61B3/10 , A61B3/1005 , A61B3/107 , A61B3/111 , G01M11/0207 , G02C7/061 , G02C13/003 , G02C13/005 , G02C2202/22
Abstract: A computer-implemented method detects the position of a corneal vertex of an eye from a frontal image of a head and a lateral image of the head. The front and lateral images are calibrated to one another, and the position of the corneal vertex in space is determined from the frontal image and the lateral image with a geometric position determination.
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