1. An apparatus to obtain a high resolution image, the apparatus comprising: a region dividing unit dividing an input image frame into a background region and a foreground region; a first image frame obtaining unit obtaining a first high resolution image frame with respect to the background region; a second image frame obtaining unit obtaining a second high resolution image frame with respect to the foreground region; and an image frame compositing unit compositing the first high resolution image frame and the second high resolution image frame to obtain a high resolution image frame with respect to the input image frame.