Apparatus and method for matching image characteristics such as fingerprint minutiae
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United States of America Patent
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Jan 23, 1990
Issued Date -
N/A
app pub date -
Apr 24, 1989
filing date -
May 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for matching images in which characteristic points of an image to be tested for a match, such as a fingerprint, are compared with characteristic points of a master image by attempting to match the distances between pairs of master characteristic points with distances between pairs of live characteristic points, whereby the coordinate system of the test image is not required to be aligned with the coordinate system of the master image. The matching system can be implemented in an identification mode in which the live image is attempted to be matched with each of a number of master images, or a verification mode in which the live image is attempted to be matched with a master image that is purported to be the same as the live image.
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