Method of measuring at least one geometrico-physionomic parameter for positioning a frame of vision-correcting eyeglasses on the face of a wearer
US8231220B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 4, 2008 |
| Grant date | Jul 31, 2012 |
| Priority date | — |
| Expiry date | Jun 8, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C13/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The method includes capturing at least one digital image of the wearer's face with a portable image capture appliance (1) and processing the captured image to determine a geometrico-physionomic parameter. Before capturing the image, the operator positions the image capture appliance manually in a first configuration in which an observation line connecting the pupil (7) of the image capture appliance with a predetermined remarkable point associated with the wearer's face or with the frame is substantially horizontal. Image capture is performed in a second configuration of the image capture appliance such that the altitude of the image capture appliance is identical to its altitude in the first configuration. The calculation of the geometrico-physionomic parameter includes identifying on the image, the image of the predetermined remarkable point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.