RECOGNITION DEVICE AND METHOD, AND COMPUTER PROGRAM PRODUCT

摘要

According to an embodiment, a recognition device includes a memory to store therein learning patterns each belonging to one of categories; an obtaining unit to obtain a recognition target pattern; a first calculating unit to calculate, for each category, a distance histogram representing distribution of the number of learning patterns belonging to the categories with respect to distances between the recognition target pattern and the learning patterns belonging to the categories; a second calculating unit to analyze the distance histogram of each category, and calculate a feature value of the recognition target pattern; a third calculating unit to make use of the feature value and one or more classifiers, and calculate degrees of reliability of the recognition target categories; and a determining unit to make use of the degrees of reliability and, from among the one or more recognition target categories, determine a category of the recognition target pattern.

主权项

1. A recognition device comprising:
a first memory to store therein a plurality of learning patterns each of which belongs to one of a plurality of categories; an obtaining unit to obtain a recognition target pattern; a first calculating unit to, for each of the plurality of categories, calculate a distance histogram which represents distribution of number of learning patterns belonging to the categories with respect to distances between the recognition target pattern and the learning patterns belonging to the categories; a second calculating unit to analyze the distance histogram of each of the plurality of categories, and calculate a feature value of the recognition target pattern; a third calculating unit to make use of the feature value and one or more classifiers used in classifying belongingness to one or more recognition target categories, and calculate degrees of reliability of the recognition target categories; a determining unit to make use of the degrees of reliability and, from among the one or more recognition target categories, determine a category of the recognition target pattern; and an output unit to output the determined category of the recognition target pattern.