Image processing device, and image processing system and computer-readable medium therefor

An image processing device including an image information acquirer and a control device configured to detect encircling lines written on a document sheet, based on acquired image information, determine an arrangement order of a partial image formed within each encircling line, detect first symbols each written on the document sheet and added to a corresponding partial image, the first symbols relating to how to lay out the partial images, determine a layout of the partial images based on the arrangement orders and the first symbols, extract, from the image information, a plurality of pieces of image information each of which is image information of a partial image within a corresponding encircling line, and generate layout image information in which the pieces of image information are arranged according to the layout.