1. A commodity recognition apparatus, comprising: an image capturing section configured to photograph an object subject to the recognition to capture image of the object; a light source configured to irradiate the object with an illumination light therefrom when photographing the object; a storage module configured to store the image of the object in a storage section; an identification module configured to identify, for each image of the object stored in the storage section, an image capturing condition of the light source for the image; a selection module configured to select the image captured by the image capturing section under a given image capturing condition identified by the identification module; a control module configured to display the image of the object selected by the selection module on a display section; and a recognition module configured to recognize, from the image stored in the storage section, the object imaged in the image as a specific commodity, wherein the storage module replaces the data corresponding to a given pixel of the image with data indicating the image capturing condition of the image to store the image in the storage section, and the identification module identifies the image capturing condition based on the data corresponding to the given pixel.