Method and apparatus for extracting feature vector used for face recognition and retrieval

A method of extracting feature vectors for face recognition and retrieval, the method comprising the steps of:

• (a) generating an entire Fourier feature vector for an entire face area of a normalized face image and a central Fourier feature vector for a central face area of the normalized face image;
• (b) generating an entire intensity feature vector for the entire face area and a local intensity feature vector for a predetermined number of face component-wise areas;
• (c) generating an entire composite feature vector by coupling the entire Fourier feature vector and the entire intensity feature vector into a single coupled vector and projecting the coupled vector onto a first linear discriminant space;
• and
• (d) generating a central composite feature vector by coupling the central Fourier feature vector and the local intensity feature vector into a single coupled vector and projecting the coupled vector onto a second linear discriminant space.