Image analysis – Histogram processing – For setting a threshold
Patent
1990-02-26
1991-12-31
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 36, G06K 962
Patent
active
050778072
ABSTRACT:
A method for preprocessing reference feature vectors representing patterns in order to form, for each selected pattern class, collections of regions. A hierarchy of possibility regions is formed, wherein all reference feature vectors of a pattern class are contained in each level of the hierarchy of possibility regions associated with the pattern class. This hierarchy is later used to exclude a pattern class from consideration if a feature vector representing an unknown pattern is not contained in some level of its associated hierarchy of possibility regions. A collection of certainty regions is used, wherein no reference feature vector not of a pattern classis contained within any certainty region associated with the pattern class. The certainty regions are later used to classify a feature vector representing an unknown pattern as belonging to a pattern class. A collection of confidence regions is used to identify, although not with certainty, an unknown input pattern, and assign a confidence value indicating the relative confidence associated with the possibility that this unknown input pattern belongs to the pattern class.
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Boudreau Leo H.
Caserza Steven F.
Palantir Corp.
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