Interactive eyewear selection system
US6508553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | May 14, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C13/003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of determining eyeglass frame parameters from a digital image of the person's face and a digital image of an eyeglass frame. The method comprises the steps of: (a) providing a digital image of the person's face; (b) determining a physical scale of the face using a scaling factor; (c) locating center points P1, P2 of the left and right irises in the face image, and determining a pupil midpoint Pc; (d) providing a digital image of an eyeglass frame; (e) adjusting, if necessary, the size of the frame to the physical scale of the face; (f) combining the frame and face images such that the frame is superimposed on the face; (g) aligning the frame and face in accordance with the frame center point fc and the pupil midpoint Pc; and (h) determining the frame parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.