PERSON FACE JAW DETECTION METHOD, JAW DETECTION SYSTEM, AND JAW DETECTION PROGRAM

摘要

A person face is detected and a jaw detection window is set at the lower portion of the face. Edge intensity distribution in the jaw detection window is calculated. Pixels having edge intensity equal to or above a threshold value are detected from the edge intensity distribution. An approximation curve is calculated so as to match with the distribution of the detected pixels. The lowermost portion of the approximation curve is decided to be the bottom of the jaw of the person. Thus, it is possible to accurately and rapidly detect the bottom portion of a jaw of a person face.