Recognition dictionary creation apparatus and method for creating recognition dictionary by the same

摘要

A recognition dictionary creation apparatus photographs a commodity by an image capturing section to capture the image of the commodity; measures a distance from the image capturing section to the commodity photographed by the image capturing section; generates a quasi-commodity-image in a state in which the commodity is imaginarily moved away from the image capturing section to a given registration distance longer than the measurement distance based on the image of the commodity photographed by the image capturing section; extracts an appearance feature amount of the commodity from the generated quasi-commodity-image; and registers, in a recognition dictionary in association with the registration distance data, the extracted appearance feature amount as the feature amount data of the photographed commodity at the registration distance to create the recognition dictionary.

主权项

1. A recognition dictionary creation apparatus, comprising:
an image capturing section configured to photograph a commodity to capture the image of the commodity; a measurement module configured to measure a distance from the image capturing section to the commodity photographed by the image capturing section; a specifying module configured to specify the commodity; a storage module configured to store a correction coefficient for representing an attenuation trend of light reflected by a surface of the commodity having a standard figure when photographing the commodity at each separation distance from the image capturing section; a generation module configured to generate a quasi-commodity-image in a state in which the commodity is imaginarily moved away from the image capturing section to a given registration distance longer than the distance measured by the measurement module based on the image of the commodity photographed by the image capturing section; a correction module configured to correct the quasi-commodity-image generated by the generation module with the correction coefficient for the registration distance; an after-generation extraction module configured to extract an appearance feature amount of the commodity from the quasi-commodity-image generated by the generation module, wherein the after-generation extraction module extracts the appearance feature amount of the commodity from the quasi-commodity-image corrected by the correction module; and an after-generation registration module configured to register, in a recognition dictionary in association with the registration distance, the appearance feature amount extracted by the after-generation extraction module as the feature amount data of the commodity specified by the specifying module at the registration distance.