1. A document scanning apparatus comprising: a document scanner that scans at least one page of a document and acquires a scanned image for each page; a touch-panel including a display that displays an image and a sensor that senses a touch operation to the displayed image; a display processing unit that displays at least one scanned image and an image to be processed associated with a process to be carried out for the scanned image on the display; an object-to-be-processed accepting unit that accepts the scanned image as an object to be processed when the sensor senses the touch operation to the scanned image displayed on the display; a process accepting unit that accepts a process associated with the image to be processed as a process to be carried out for the object to be processed when the sensor senses the touch operation to the image to be processed displayed on the display after the object-to-be-processed accepting unit has accepted the object to be processed; and a scanned image processing unit that carries out the process accepted by the process accepting unit for the scanned image to be processed that is accepted by the object-to-be-processed accepting unit, wherein the display processing unit displays a processed result carried out by the scanned image processing unit on the display together with the scanned image or the image to be processed, the display processing unit displays as the image to be processed a model image associated with an editing process to be carried out for the scanned image, the scanned image processing unit carries out the editing process on the basis of the model image accepted by the process accepting unit for the scanned image to be processed accepted by the object-to-be-processed accepting unit, and the display processing unit displays the result of combining the scanned image to be processed with the model image.