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    http://www.milbo.users.sonic.net/stasm

[2] Luxand, Inc.
    http://www.luxand.com

[3] Henry A. Rowley, Shumeet Baluja, and Takeo Kanade , Neural NetworkŸìBased Face Detection. IEEE Transactions on Pattern Analysis and Machine Intelligence, volume 20, number 1, pages 23Ÿì38, January 1998.

[4] Paul Viola, Michael Jones , Rapid Object Detection Using a Boosted Cascade of Simple Features , 2001.

[5]Otsu, N., "A Threshold Selection Method from Gray-Level Histograms," IEEE Transactions on Systems, Man, and Cybernetics, Vol. 9, No. 1, 1979, pp. 62-66.

[6] http://cv.cs.nthu.edu.tw/research/undergraduate/941508/project_941508.html