- Get only region around the eyes and normalization (less computational cost and avoid false positive):
a) landmarks detection
b) rotation of the face
c) get only region around the eyes
d) illumination normalization
e) resize
- Apply HPOG/HOG/LBP/... to the normalized region around the eyes
- Classify features
[I used LBP and SVM for classification. I'm getting good results.]
For training, I use this database[1]. This database has recently been released.
You can also see more information.
[1] http://parnec.nuaa.edu.cn/xtan/data/ClosedEyeDatabases.html