Abstract
In this paper, an ER (Error-Reduction) algorithm-based method for resolution enhancement of still images is proposed. Since Fourier-domain and object-domain constraints are needed for any ER algorithm-based method, the proposed method introduces the following two constraints for resolution enhancement. The first one is the Fourier-domain constraint that utilizes the Fourier transform magnitude estimated from an autocorrelation function of the target low-resolution (LR) image as that of a high-resolution (HR) image. The second constraint is the object-domain constraint that utilizes the frequency components of the LR image as the known low-frequency components of the HR image. By using the ER algorithm which is introduced the above two constraints, an accurate HR image can be obtained.
