1. A document image processing apparatus comprising: a specifying section that specifies a sentence region including a character row from a document image; an extracting section that extracts at least one of character row images included in the specified sentence region; a recognizing section that recognizes respective characters included in the extracted character row image; an interpreting section that interprets an original sentence character row comprising the recognized characters and generates an interpreted sentence character row; an arranging section that arranges the respective character row images in the sentence region by contracting the respective character row images, the arranging section that arranges the generated respective interpreted sentence character rows in a vacant region except a region arranging the respective character row images from the sentence region; and a generating section that generates a data of an output document arranged with the respective character row images and the respective interpreted sentence character rows in the sentence region.