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.