Method and system for face detection using pattern classifier
US7447338B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2003 |
| Grant date | Nov 4, 2008 |
| Priority date | — |
| Expiry date | May 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/164
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting a face using a pattern classifier learning face images and near face images are provided. The system includes a basis vector extractor, which receives a plurality of face images and a plurality of near-face images and extracts a plurality of face basis vectors expressing the face images and a plurality of near-face basis vectors expressing the near-face images; a feature vector extractor, which extracts face feature vectors and near-face feature vectors by projecting the face images and the near-face images upon the face and near-face feature vectors and projects an image, which is input for face detection, upon the basis vectors to extract the feature vector of the input image; a clustering unit, which classifies the face feature vectors and the near-face feature vectors into predetermined sub-classes and outputs a sub-class number of a sub-class including the feature vector of the input image among the sub-classes; a pattern classifier trainer, which trains each pattern classifier corresponding to a certain sub-class using face feature vectors and near-face feature vectors, which are included in the sub-class; and a face determiner, which applies…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.