We should pick up the
feature points which represent the most important
characteristics on the face and can be extracted easily.
The number of the feature points should take enough
information and not be too many. If the database has
different postures of each people to be recognized, the
property of angle invariance of the geometry
characteristic is very important. This paper has
presented a method to locate the vital feature points of
face, which select 9 feature points that have the
property of angle invariance, including 2 eyeballs, 4
near and far corners of eyes, the midpoint of nostrils
and 2 mouth corners, as shown in Fig.2. According to
these, we can get other feature points extended by
them and the characteristics of face organs which are
related and useful to face recognition.