Method for detecting eye and mouth positions in a digital image
US7092554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 1, 2001 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Mar 21, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/168
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digital image processing method for locating eyes and mouth in a digital face image. The method includes the steps of detecting iris colored pixels in the digital face image; grouping the iris colored pixels into clusters; detecting eye positions using the iris colored pixels; identifying salient pixels relating to a facial feature in the digital face image; generating a signature curve using the salient pixels; and using the signature curve and the eye positions to locate a mouth position. In a preferred embodiment, a summation of squared difference method is used to detect the eye positions. In another preferred embodiment, the eyes and mouth positions are validated using statistics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.