Vertical vector pattern recognition algorithm
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) selecting pixels in the digitized image representing the outline of the unknown object;
(b) representing the digitized image of the unknown object as a set of vertical vectors, each vertical vector being a digital word with a predetermined number of bits, said digital word representing a numeric value proportional to the distance in one direction between two pixels selected to represent the outline; and
(c) forming a normalized silhouette by normalizing the width and the area of the silhouette as represented by the set of vertical vectors.
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Abstract
A method of identifying an object from a digitized image is disclosed. The method is particularly applicable to the classification of ships. The digitized image of an unknown ship is represented as a set of vertical vectors. The vertical vectors are normalized and then compared to a library containing normalized digitized images of known ships. The unknown ship is thereby identified as being similar to the known ship corresponding to the library image most closely matching the image of the unknown ship.
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Citations
6 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) selecting pixels in the digitized image representing the outline of the unknown object; (b) representing the digitized image of the unknown object as a set of vertical vectors, each vertical vector being a digital word with a predetermined number of bits, said digital word representing a numeric value proportional to the distance in one direction between two pixels selected to represent the outline; and (c) forming a normalized silhouette by normalizing the width and the area of the silhouette as represented by the set of vertical vectors. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification