Patent ID: 8958082
Filing Date: 2015-02-17
Classification: H04N

Abstract:
1. A document creation apparatus having a function of dividing a double-page spread document at a folded portion thereof and copying the divided double-page spread document, the apparatus comprising: an image reading unit that reads the double-page spread document and generates document image data respectively for all pages of the double-page spread document; a printing unit that prints the document image data; an extraction unit that extracts luminance data of a planned division region from the document image data for each of the pages generated by the image reading unit, the planned division region being a predetermined region in a division direction extending to both sides of a border line between a plurality of portions, the border line being where the document image data is divided into the plurality of portions; a generation unit that obtains projection data that shows respective luminance changes in the division direction of the planned division regions of all the pages by calculating an average value of luminance of pixels lined up in a direction orthogonal to the division direction in the luminance data of the planned division regions of all the pages extracted by the extraction unit, and that generates reference projection data for the planned division regions based on the obtained projection data of the planned division regions of all the pages; a division determination unit that compares the reference projection data with the projection data of each planned division region, and if difference projection data of a difference between the reference projection data and the projection data of that planned division region is larger than or equal to a preset determination threshold, determines that division at the folded portion is impossible, and if the difference projection data is smaller than the preset determination threshold, determines that division at the folded portion is possible; and an image division processing unit that, if a result of the determination by the division determination unit is that division at the folded portion is impossible, prints the document image data with the printing unit without dividing the document image data, and if the result of the determination by the division determination unit is that division at the folded portion is possible, divides the document image data at the folded portion and prints the divided document image data with the printing unit.