Patent ID: 6583895
Filing Date: 2003-06-24
Classification: H04N

Abstract:
An image data reading method for generating image data by image reading means in accordance with signals detected by a plurality of reading elements set in an array on an image reading sensor of a free scanning apparatus able to scan an original in arbitrary direction, said image data corresponding to each reading element, calculating position information corresponding to said each image data by position information generating means according to a moving amount of the free scanning apparatus, and mapping said each image data in image data storage means according to the position information, andwhere a read starting position represents a reference position, the reading elements arraying direction of the image reading sensor at the reference position is defined as a Y axis, and a direction vertical to the Y axis as a X axis, said method comprising the steps of: generating a boundary vertical to at least either one of the X axis or the Y axis within a mapping area in accordance with the position information of one or both ends of the image reading sensor generated by the position information generating means when the free scanning apparatus scans for a section in the X positive direction, and mapping only a part outside the boundary generated by the one section scanning when the free scanning apparatus scans in the X negative direction.