Method for face orientation determination in digital color images
US7120279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | May 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/165
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A digital image processing method for determining an orientation of a face in a digital color image generates a mean grid pattern element image from a plurality of sample face images and an integral image from the digital color image. A face is located in the color digital image by using the integral image to perform a correlation test between the mean grid pattern element image and the digital color image at a plurality of effective resolutions by reducing the digital color image to a plurality of grid pattern element images at different effective resolutions and correlating the mean grid pattern element image with the plurality of grid pattern element images, whereby either the mean grid pattern element image or the grid pattern element images are provided at a plurality of different orientations. Accordingly, an orientation of the face in the color digital image is determined by using the images with different orientations in the correlation test.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.