Lockheed Martin Corporation

Teranex Systems, Inc.

James F Curtis

Christopher M Riehl

Albert R Sanders

Shawn D Goodwin

Holger Findling

Raymond D Conkling

The present invention relates to conversion of 2D media to pseudo-3D left and right image pairs. In particular, it relates to imposing forced perspective on left and right versions of a 2D image. The distorted pair of images, when displayed, will be interpreted by a viewer as a 3D image. The pseudo-3D forced perspective image pairs can be produced without depth mapping of objects in scenes and without comparing the position of objects in successive image frames.

Pseudo-3d forced perspective methods and devices

A prescreen filtering method and algorithm based upon Attributed Relational Graph (ARG) techniques are employed in a node-by-node matching to individually determine a best alignment of the sets of minutia of a pair of search and file fingerprints. First, the directional components of each and every different pair of minutia from the two sets are compared to ensure that they are within a given angular tolerance, which is selected to allow for a reasonable variation in possible rotational misalignments. After this directional alignment tolerance criteria has been passed, a Distance Matrix (DM) score is generated for each passed &lsqb;u,v&rsqb; minutia pair by performing a virtual alignment of the &lsqb;u,v&rsqb; minutia pair in location and direction, and then by comparing the distances and relative orientations between each of four pairs of minutia neighbors in each of the four local quadrants, which represents how well each different &lsqb;u,v&rsqb; minutia pair match each other. The size of a set of well matched minutia pairs, relative to the sizes of other sets of well matched minutia pairs for all other file fingerprints in the repository file, determines if a particular file fingerprint is passed along to the more complete and rigorous matching functions of an Automated Fingerprint Identification System (AFIS).

Fingerprint matching system with ARG-based prescreener

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Orlando, FL, United States of America

James F Curtis