An information processing apparatus includes: a color extraction unit that inputs an additional write document provided by writing additional write information to an original document in different colors and acquires color information on the additional write document; a color analysis unit that analyzes the correspondence between one of a color combination and color space generated by color mixture and the colors extracted based on the colors extracted; a joining and integrating unit that determines overlap between different colors on the additional write document based on the analysis result of the color analysis unit, and that joins the break of the additional write information corresponding to the correspondence portion between the overlap and the break of the additional write information; a determination unit that determines a specification area of the additional write document according to the additional write information joined; and an information analysis unit that reads information contained in the specification area analyzed.