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Computer-implemented method for determining representation of rim of spectacles frame or representation of edges of spectacle lenses

A technology for spectacle lenses and spectacle frames, which is applied in the directions of glasses/goggles, glasses/protective glasses, computing, etc., and can solve problems such as consuming time for customers and changing the workflow of opticians

Active Publication Date: 2019-11-12
CARL ZEISS VISION INT GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Namely, in the prior art, before centering can be performed, tracker data must first be generated, which can change the optician's workflow and cost the client time
Also, inconveniently, each optician has to have tracker data on each frame ready

Method used

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  • Computer-implemented method for determining representation of rim of spectacles frame or representation of edges of spectacle lenses
  • Computer-implemented method for determining representation of rim of spectacles frame or representation of edges of spectacle lenses
  • Computer-implemented method for determining representation of rim of spectacles frame or representation of edges of spectacle lenses

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] The device 10 shown in the figure is used to determine centering parameters for eyeglass adjustment. The device has a support 12 on which a rigid camera frame 14 is mounted in a liftable and adjustable manner, which in turn carries a plurality of cameras 16a, 16b. The camera holder 14 is curved approximately circularly in plan view and extends between two free ends 18 arranged at a distance from one another. The inner surface 20 of the camera holder 14 faces forward, ie toward the support 12 and toward the sides, encloses an inner space 22 in which the subject's head is located when the images are recorded with the cameras 16a, 16b. The inner surface 20 extends in the direction extending between the free ends 18, is concavely curved, and has, for example, the shape of a section of a cylindrical circumference, which can have a circular or oval base here. . In order to be able to position the camera frame 14 at the correct height relative to the subject's head, a liftin...

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PUM

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Abstract

The invention relates to a computer-implemented method for determining a representation of a rim of a spectacles frame or a representation of the edges of the spectacle lenses, wherein at least two calibrated images taken from different viewing angles of a head wearing the spectacles frame or the spectacles are provided, and wherein data for at least portions of the rims of the spectacles frame orthe edges of the lenses are detected in each image. According to the invention, a three-dimensional model of the spectacles frame or the spectacles is provided, based on geometric parameters, and thegeometric parameters are optimized to adapt the model to the detected edges.

Description

technical field [0001] The invention relates to a computer-implemented method for determining a representation of an edge of a spectacle frame or a representation of an edge of a spectacle lens according to the preamble of claim 1 . Background technique [0002] Methods for finding relevant contours in photos for a given tracker dataset (Tracer-Datensatz) are known. Use image-based methods like pattern search or template matching here. Reference is made by way of example to the disclosure of DE 10 2011 115 239 B4. The disadvantage of this solution is that the tracker dataset and therefore the glasses worn must be known in order to find the contours in the captured picture. But the typical workflow at an optician is to first get the tracker data from the frame when the customer has already selected the glasses to buy. That said, while the customer is still in the store, not all of the glasses in the store will have the data. The determination of the tracker data can also ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C13/00
CPCG02C13/003H04N13/282G02B27/0093G02C13/005G06F3/012G06Q30/0206G06T17/10G06N3/047
Inventor C.妞文休斯C.沃耶克O.施瓦茨
Owner CARL ZEISS VISION INT GMBH