1. An image processing device, comprising: image acquisition means for acquiring an image including a graphic code and at least one character positioned outside the graphic code, which are in a given positional relationship; deformation rule identification means for identifying a deformation rule for deforming the graphic code, which is included in the image acquired by the image acquisition means, to a graphic of a known type; and deformation processing execution means for executing, on the at least one character included in the image acquired by the image acquisition means, deformation processing based on the deformation rule identified by the deformation rule identification means.