                      Synonyms: Face localization, face grouping, face identification, face matching, person information analysis; Definition: Face detection and tracking are techniques for locating faces in images and video sequences; face recognition is a technique for identifying or verifying unknown people using a stored database of known faces.                                                                                              ! "#$$%%&                 "’()*%’’%&   +       +     , +    + - .          /+ + 0  (        1    +            +2                       %+ 1 http://www.viewdle.com