1. A stereoscopic image processing method for creating a single stereoscopic combined image formed by arranging a plurality of view-point images, the method comprising adding a padding area having at least one of any color and any pattern to an original stereoscopic combined image in such a way as to satisfy the condition of V1>V and also to satisfy the condition that the ratio between V1 and H1 falls within a predetermined ratio range, where the horizontal size and the vertical size of the original stereoscopic combined image are H and V, respectively, and the horizontal size and the vertical size of a processed image containing the stereoscopic combined image are H1 and V1, respectively.