In the applications such as remote sensing and computer vision

to reconstruct a high-resolution image from multiframes of low-resolution images is required. Former work was based o n the same r eso lution fr ames. T his paper is based on the theorem of spectral aliasing resulting from undersampled low-resolution image

and a general formula of the spectral aliasing is proposed for the problem of different resolutions. A row-action method even for noisy and blurred frames are given in the DFT domain as well. Computer simulations demonstrate the performance of the algorithm.