Method of recognizing patterns
First Claim
1. A method of identifying an unknown object from a digitized image of the silhouette of the object by comparing the digitized image to each one of a plurality of images of the silhouettes of known objects, comprising the steps of:
- (a) representing the digitized image of the silhouette of the unknown object as a set of radial vectors;
(b) forming a normalized set of radial vectors by dividing each radial vector in the set by a scale factor; and
(c) rotating the set of radial vectors until the largest radial vector is the first vector in the set.
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Abstract
A method of identifying an object from a digitized image is disclosed. One embodiment of the method is particularly applicable to the classification of ships and a second embodiment is particularly applicable to the classification of aircraft. The digitized image of an unknown object is represented as a set of vertical vectors or, in the second embodiment, a set of radial vectors. The vectors are normalized and then compared to a library containing normalized digitized images of known objects. The unknown object is thereby identified as being similar to the known object corresponding to the library image most closely matching the image of the unknown object.
485 Citations
4 Claims
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1. A method of identifying an unknown object from a digitized image of the silhouette of the object by comparing the digitized image to each one of a plurality of images of the silhouettes of known objects, comprising the steps of:
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(a) representing the digitized image of the silhouette of the unknown object as a set of radial vectors; (b) forming a normalized set of radial vectors by dividing each radial vector in the set by a scale factor; and (c) rotating the set of radial vectors until the largest radial vector is the first vector in the set. - View Dependent Claims (2, 3, 4)
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Specification