Abstract: This paper presents an approach to locate nose tip using
the lower contour of the nose. Firstly we determine the candidate
nose area through the prior knowledge of face and the location of
two eyes. Then we extract the lower contour of the nose through
calculating the confidence of the nose edges that detected by Canny
operator. Finally, we use least square method to fit the lower
contour into parabolic curve, and then locate the nose tip. The
experiment results show that the proposed approach is accurate and
practical.

Key words: nose tip location, Canny operator, least square fitting method, face pose estimation