Generation of high resolution images from low resolution images

Summary form only given. It is known that some image enlarging methods work by extrapolating high-frequency components. The image enlarging method using the Bezier surface has been proposed, where it is assumed that each pixel has energy. The pixel energy is invariant during the enlarging process. In this paper, we propose a new method using the B-spline surface, and evaluate the effectiveness of the proposed method by using PSNR value.