Commodity Identification Device, Non-Transitory Computer-Readable Storage Medium, and Learning Method

A commodity identification device is provided with: one or more processing devices; and one or more storage devices storing instructions for causing the one or more processing devices to: obtain a taken image; determine whether a commodity is provided with a corresponding mark or not by using a mark detector on the obtained taken image; identify which of a plurality of commodity groups a commodity provided with the mark belongs to by using a first neural network having learned the commodity on the taken image where the mark is detected; and identify the commodity by using a second neural network having performed learning for each of the commodity groups.