Abstract: There is provided an imaging technology allowing easy acquisition/storing of image data drawn in an arbitrary area by a user, without the use of a dedicated document sheet, where a restriction is hardly imposed on a document sheet in terms of design. There are included a camera that images an imaging object to which a symbol sheet including a predetermined symbol is attached, a central processing unit that detects the predetermined symbol from an original image of the imaging object imaged by the camera, that recognizes a predetermined area calculated based on the predetermined symbol as an image acquisition area, and that extracts, and acquires as image data, an image in the image acquisition area, and image data storage unit that stores the image data.