Patent · US Active

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

US10571721B2 · kind B2 · utility

0Cited by

5References

23Claims

0Family size

Assignees

Carl Zeiss Vision International GmbH · DE
Carl Zeiss AG · DE

Inventors

Claudia Nieuwenhuis · Aalen, DE
Christian Wojek · Aalen, DE
Oliver Schwarz · Rainau, DE

Key dates

Filing date	Jul 25, 2019
Grant date	Feb 25, 2020
Priority date	—
Expiry date	Jul 25, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04N13/282
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

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 is disclosed, wherein at least two calibrated images taken from different viewing angles of a head a subject wearing the spectacles frame or the spectacles are provided, and wherein data for at least portions of the rims of the spectacles frame or the edges of the lenses are detected in each image. Further, a three-dimensional model of the spectacles frame or the spectacles is provided, based on geometric parameters, and the geometric parameters are optimised to adapt the model to the detected edges.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.