Abstract: An image processing apparatus includes a compressed image data memory, an image expansion unit, an expanded image data memory, a boundary image data memory, an image resizing unit, and a control unit. The control unit determines an area to be expanded by the image expansion unit based on a capacity of the expanded image data memory and a capacity of the boundary image data memory. The control unit determines a size of the area to be expanded by the image expansion unit, so that a size of image data obtained by expanding compressed image data corresponded to the area determined by the control unit is less than or equal to the capacity of the expanded image data memory, and less than or equal to the capacity of the boundary image data memory.