System and method for preparing a recognition dictionary
First Claim
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1. A recognition system for preparing a recognition dictionary comprising:
- means for producing distribution data of a plurality of categories for each of a plurality of features from samples of patterns to be recognized;
means responsive to said means for producing distribution data for providing the mean value and the standard deviation of each of the categories of each of said plurality of features;
means responsive to said means for providing the mean value and the standard deviation for summing for each of the features a number of combinations of pairs of the categories having a discreteness greater than a predetermined value; and
means coupled to said means for summing for comparing the number of combinations of each feature for selecting as a highest priority one of the features of the categories to be recognized having the highest number of combinations.
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Abstract
For the preparation of a tree structure recognition dictionary, a feature set at each node of the tree should be the feature giving the largest discrete distribution number. When elements of an object are classified or divided into categories, if the number of combinations of subgroups, which are discrete, is the largest, the classification is the most effective. This classification is effected, when the distance between distributions for a certain feature is larger than a predetermined value.
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9 Claims
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1. A recognition system for preparing a recognition dictionary comprising:
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means for producing distribution data of a plurality of categories for each of a plurality of features from samples of patterns to be recognized; means responsive to said means for producing distribution data for providing the mean value and the standard deviation of each of the categories of each of said plurality of features; means responsive to said means for providing the mean value and the standard deviation for summing for each of the features a number of combinations of pairs of the categories having a discreteness greater than a predetermined value; and means coupled to said means for summing for comparing the number of combinations of each feature for selecting as a highest priority one of the features of the categories to be recognized having the highest number of combinations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A recognition method for preparing a recognition dictionary comprising the steps:
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producing distribution data of a plurality of categories for each of a plurality of features from samples of patterns to be recognized; providing the mean value and standard deviation of each of the categories of each of the plurality of features in response to the distribution data; summing for each of the features a number of combinations of pairs of the categories having a discreteness greater than a predetermined value in response to the mean value and standard deviation; and comparing the number of combinations of each feature for selecting as a highest priority one of the features of the categories to be recognized having the highest number of combinations in response to the summed number of combinations.
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Specification