References

[1] Guido Ligthart and Frans C.A. Groen
A comparison of different autofocus algorithms
Proc. IEEE int Conf. on Pattern recognition, 1982

[2] Je-Ho Lee, etc...
Implementation of a passive automatic focusing algorithm for a digital still camera
IEEE Trans. on Consumer Electronics, Aug 1995

[3] Sang Ku Kim, etc...
Simultaneous out-of-focus blur estimation and restoration for digital auto-focusing system
IEEE Trans. on Consumers Electronics, Aug 1998

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