1. Araki, Y., Shimada, N., Shirai, Y.: Face Detection and Face Direction Estimation Using Color and Shape Features. In: Proc. of ICMA 2000, Osaka, September 2000, pp. 351–355 (2000)
2. Sobottka, K., Pitas, I.: Extraction of Facial Regions and Features Using Color and Shape Information. In: Proc. 13th IAPR, pp. 421–425 (1996)
3. Senior, A.: Face and Feature Finding For a Face Recognition System. In: Proceeding of the Second International Conference on Audio- and Video-Based Biometric Person Authentication, Washington D. C, March 1999, pp. 154–159 (1999)
4. Veeraraghavan, H., Papanikolopoulos, N.: Detecting Driver Fatigue Through the Use of Advanced Face Monitoring Techniques, ITS Institute, Report CTS 01-05 (September 2001)
5. Terrillon, J., David, M., Akamatsu, S.: Automatic Detection of Human Faces in Natural Scene Images by Use of a Skin Color Model and of Invariant Moments. In: Proc. IEEE Int. Conf. on Automatic Face and Gesture Recognition, Japan, April 1998, pp. 112–117 (1998)