Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Methods of use
Reexamination Certificate
2007-08-30
2011-11-22
Dang, Hung (Department: 2873)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Methods of use
Reexamination Certificate
active
08061842
ABSTRACT:
In compliance with the method, the measurement of the characteristic dimensions of the hypothetical pupil are taken on the basis of a sequence of images. The eye is stimulated with the light featuring a pre-defined intensity profile. For each image in this sequence, the characteristic dimensions of the hypothetical pupil are calculated by means of image processing methods. For a sequence of images, the system determines the function ƒ which defines the changes in the characteristic dimensions of the hypothetical pupil within the measurement period, and on the basis of the said changes as well as on the selected mathematical model, the aliveness parameters O of the eye are determined by means of estimation methods. The calculated aliveness parameters are compared with the statistical template by way of classification process.
REFERENCES:
patent: 4641349 (1987-02-01), Flom et al.
John Dougman, “Recognizing Persons by Their Iris Patterns,” Jain, Bolle, Pankanti,Biometrics: Personal Identification in Networked Society, Amsterdam: Kluwer (1999), pp. 103-121.
Chochowski Marcin
Czajka Adam
Pacut Andrzej
Dang Hung
McCracken & Frank LLC
Naukowa I Akademicka Siec Komputerowa Nask
LandOfFree
Method of eye aliveness testing and device for eye aliveness... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of eye aliveness testing and device for eye aliveness..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of eye aliveness testing and device for eye aliveness... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4267396