SYSTEMS AND METHODS FOR YAW ESTIMATION

摘要

Systems and methods of automatic detection of a facial feature are disclosed. Moreover, methods and systems of yaw estimation of a human head based on a geometrical model are also disclosed.

主权项

1. A method of automatic detection of a facial feature, comprising:
a. obtaining a human image comprising a head, a neck, and a face; b. modeling the human head as an ellipse in vertical projection; c. fixing the center of rotation of the ellipse as the center of the neck; d. truncating the ellipse along the major axis representing a region of the face to an arc of ±60°; e. mapping a center of the face as the projection of a nose; f. locating boundaries of the face on the ellipse by identifying coordinates on the elliptic arc subtending ±60°; and g. computing a yaw angle of head rotation using position of the nose and the boundaries of the face.