Carl Zeiss Vision International Gmbh

Carl Zeiss Ag

Carl Zeiss Industrielle Messtechnik Gmbh

Oliver Schwarz

Claudia Nieuwenhuis

Tobias Breuninger

Ivo Ihrke

Jeremias Gromotka

Michael Gamperling

Holger Wegendt

Michael Totzeck

Christian Wojek

Frank Widulle

Cristina Alvarez Diez

Dirk Doering

Lars Omlor

Philipp Jester

Matthias Barnert

Rainer Schmidt

Jörg Carls

Armin Eichert

A method of head image capturing is provided, which includes: capturing, with a mobile device, a first image of at least an eye portion of a head of a person, and capturing second images of the head with the mobile device while the head is turning in a first direction relative to the mobile device. The method entails searching for predefined landmarks in each of the second images, and stopping capturing the second images in response to identifying at least a predefined subset of the predefined landmarks in a second image of the plurality of second images. A corresponding mobile device is also provided.

Method for head image recording and corresponding mobile device

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.

Method and apparatus for determining a contour of a frame groove

The generation of a 3D reconstruction of an object is disclosed, which includes illuminating the object, capturing image data in relation to the object, and calculating the 3D reconstruction of the object from the image data. The image data contains first image data and second image data, wherein the first image data are captured when the object is illuminated with illumination light, at least some of which, in relation to an object imaging beam path, is reflected light which illuminates the object, wherein the second image data are captured from different recording directions when the object is illuminated with illumination light, at least some of which is guided in the object imaging beam path, and wherein the 3D reconstruction of the object is calculated from the first image data and the second image data.

Method and apparatus for generating a 3D reconstruction of an object

A method for virtual spectacle adjustment and a corresponding computer program and computing device are disclosed. First measurement points are defined on a 3D model of a person's head, and a model of a frame is adjusted on the basis of the first measurement points. Defining the first measurement points includes defining second measurement points on a parametric head model, adjusting the parametric head model to the 3D model of the person's head, and determining the first measurement points on the basis of the second measurement points and the adjustment. In this way, the second measurement points only have to be defined once on the parametric model so that the first measurement points can be defined for a plurality of different 3D models of different heads.

Method, device and computer program for virtually adjusting a spectacle frame

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.

Method and device for determining parameters for spectacle fitting

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.

Computer-implemented method for determining centration parameters

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.

Method, device, and computer program for virtually adjusting a spectacle frame

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.

Method, device, and computer program for the virtual fitting of a spectacle frame

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 &#x2212;30% from a predefined desired value.

Device for determining centring parameters for the adjustment of spectacles

A method for providing a mounting edge model, a corresponding computer program, and a corresponding computing device are disclosed. To provide the mounting edge model, first a plurality of data sets is provided, each of which describes a course of a mounting edge. Such data sets can be obtained from tracer data, for example. On the basis of the data sets, a parametric mounting edge model is then derived.

Method, computing device, and computer program for providing a mounting edge model

The invention relates to an apparatus and a method for determining a defocussing value (&#x394;z, &#x394;z, &#x394;z) for at least one image feature in an image, wherein at least one monochromatic image of an object is generated, wherein the defocussing value (&#x394;z, &#x394;z, &#x394;z) is determined on the basis of the image and depending on the wavelength (&#x3bb;) of the monochromatic image, and a method and apparatus for image-based determination of a dimensional size.

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Ellwangen, Germany

Oliver Schwarz