1
Guang Hua Zhang, Marcos Salganicoff: Method of measuring the focus of close-up images of eyes. Sensar, Buchanan Ingersoll P C, September 14, 1999: US05953440 (83 worldwide citation)

In a method of determining whether an image of an eye is in focus a set of pixels is selected along a line passing through the pupil/iris boundary such that the set contains at least 5 iris portion pixels and at least 5 pupil portion pixels. Statistical values, preferably median values, are computed ...


2
Zhang Guang Hua, Salganicoff Marcos: Method of measuring the focus of close-up images of eyes. Sensar, Zhang Guang Hua, Salganicoff Marcos, ALSTADT Lynn J, June 10, 1999: WO/1999/027845

In a method of determining whether an image of an eye is in focus a set of pixels is selected along a line passing through the pupil/iris boundary such that the set contains at least 5 iris portion pixels and at least 5 pupil portion pixels. Statistical values, preferably median values, are computed ...



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