IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM

摘要

An error function determining means determines, using a point spread function that is a function that indicates the degree an input image has been blurred, and using a geometric deformation matrix that is a matrix for restricting the arrangement of a two-dimensional code indicated by an input image onto cells that are the constituents of the two-dimensional code, an error function that is a function that satisfies a relationship of coming closer to a prescribed result, the more an error between the input image and an image the result of adding geometric deformation and blurs to a restored image becomes smaller. A pixel value restricting means determines pixel value restricting information that prescribes the restricting conditions to be used upon restricting pixel values, of a two-dimensional code to be restored, into prescribed discretized pixel values. An objective function determining means determines an objective function, which is a function that satisfies a relationship of coming closer to a prescribed result, the more a restored image is similar to the real image, on the basis of the error function and the pixel value restricting information. An objective function optimizing means determines a restored image that will optimize the objective function.