CHARACTER IMAGE COMPRESSION APPARATUS AND CHARACTER IMAGE RESTORATION APPARATUS, CHARACTER IMAGE COMPRESSION METHOD AND CHARACTER IMAGE RESTORATION METHOD, AND CHARACTER IMAGE COMPRESSION PROGRAM AND CHARACTER IMAGE RESTORATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To compress a character image with a high quality and a low capacitance.SOLUTION: A character recognition section 51 performs character recognition on a character image acquired by a character image acquisition section 50, a linear sum image production section 53 acquires from a dictionary DB 58 a plurality of sample images corresponding to the recognized character and produce a linear sum image with the plurality of sample images. Furthermore, a differential image production section 55 produces a differential image between the character image acquired by the character image acquisition section 50 and the linear sum image, and a storage section 56 stores in storage means 30 the linear sum image and the differential image in association with each other.