Bausch-lomb Incorporated

Lloyd M Caldwell

Gregg D Niven

Lloyd G Allred

Barry T Eagan

Joseph R Bentley

Donald Charles Grove

Barry T Egan

D Robert Cady

Xan Nguyen

Donald C Grove

A process and an enabling system and associated devices are directed to automatically and positively identifying a person based upon a matching comparison between a stored, historical iris recognition-based record and a contemporaneously obtained record. The algorithm involves identifying anchor features in selected regions of an iris image and mapping an iris pattern associated with the anchor features into a topologically consistent flat analysis space. Analysis according to the invention generates historical (reference) and contemporaneous Iris Feature Vectors for individuals upon which matching comparisons can be made to positively identify an individual from the reference base.

Positive patient identification

A placido pattern for use in obtaining a topography of an eye, includes a series of spaced arcuate segments centered about a central point and a series of spaced radial lines emanating from the central point Each pair of adjacent radial lines defines a boundary of a portion of the arcuate segments

Spider-web placido pattern

An apparatus for registering a series of video images of a spherical or quasi-spherical surface subject to movement relies on projecting at least four diffusely scattering spots of light on the surface in a preferred angular manner, and monitoring the movement of images of the light spots relative to a reference image of the light spots.

Image registration system and method

Growing community of inventors

Salt Lake City, UT, United States of America

Lloyd M Caldwell