Patent Document ID: 8185391
Application ID: 13246681

Base Claim:
1. A method in a computing device for authenticating a target object, the method comprising: for each of a plurality of objects, providing a model of patterns of the object derived from a classifier-specific feature vector for each of a plurality of classifiers, a classifier-specific feature vector having classifier-specific features extracted from the patterns of the object; receiving a target pattern of the target object and an indication of a purported object that the target pattern is purported to match; generating by the computing device a target classifier-specific feature vector for each of the plurality of classifiers, the target classifier-specific feature vector having classifier-specific features from the target pattern; generating by the computing device a classifier score for each classifier based on comparison of the target classifier-specific feature vector for that classifier to the model of the purported object for that classifier and comparison of the target classifier-specific feature vector for that classifier to the model of an object other than the purported object; and generating by the computing device an overall score indicating that the target object matches the purported object from the classifier scores.

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Claim 2:
2. The method of claim 1 wherein a classifier score for a classifier is based on a distance between the target classifier-specific feature vector for that classifier and a representative classifier-specific feature vector of the model of the purported object for that classifier and a distance between the target classifier-specific feature vector for that classifier and a representative classifier-specific feature vector of the model of an object other than the purported object.