IMAGE PROCESSOR, IMAGE PROCESSING METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To properly eliminate a handwritten part of a document image by using a handwritten image generated from coordinate data by an electronic pen.SOLUTION: An image processor includes: image acquisition means for acquiring a document image of a document including handwriting by an electronic pen; handwriting acquisition means for acquiring coordinate data of the handwriting by the electronic pen; generation means for generating a plurality of handwritten images based on the coordinate data by using a plurality of different line width; retrieval means for retrieving an image of a handwritten part similar to the handwritten image from the document image in each generated handwritten image; selection means for selecting a handwritten image that is the most similar to the image of the handwritten in the document image; and elimination means for eliminating the image of the handwritten part from the document image by using the selected handwritten image.