1. An information processing apparatus, comprising: a first storing unit that stores usage limitation information that indicates a usage limitation of a document, the usage limitation information including a stamp image that indicates a document is limited in use, and a corresponding number of the stamp images for the usage limitation; a second storing unit; and a registering unit that extracts one or more stamp images from document image information obtained by reading a paper document containing at least one stamp image, obtains usage limitation information corresponding to the extracted stamp image and a number of the extracted stamp images, from the first storing unit, and registers the obtained usage limitation information and the document containing the document image information in correlation with each other into the second storing unit, wherein the usage limitation of the document is more strict as the number of the stamp images of the usage limitation increases.