Eyeglass detection method

Details Eyeglass detection method Eyeglass detection method

2008-05-13

2008-05-13

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Eye examining or testing instrument

Subjective type

C382S103000, C382S111000, C396S051000

Reexamination Certificate

active

07370970

ABSTRACT:
The presence of eyeglasses worn by a human subject is detected regardless of whether the subject's head is viewed frontally or in profile. Image data within search windows defined relative to the subject's eye is processed to form linear representations of edge boundaries. Angles formed by intersections of the linear representations are determined and used as a basis for determining if eyeglass lenses are present. When prescribed eyeglass components are detected, the eye detection and tracking routines are configured accordingly.

REFERENCES:
patent: 5293427 (1994-03-01), Ueno et al.
U.S. Appl. No. 11/076,600, filed Mar. 10, 2005, Hammoud et al.
Heo, Savvides& Vijayakumar, Performance Evaluation of Face Recognition Using Visual and Thermal Imagery with Advanced Correlation Filters; Joint IEEE Int'l Workshop on Object Tracking and Classificaton Beyond the Visible Spectrum; Jun. 20, 2005.

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