A compendious study of super-resolution techniques by single image

Single-image Super-resolution (SISR) is the process of reconstructing a high-resolution (HR) image by artificially creating the information and frequency details from a single available low resolution (LR) image. Availability of limited number of images in the practical circumstances has motivated researchers toward this area. Plethora of techniques has been proposed over the years for SR reconstruction. In this paper, the SR process has been classified and the degradation model has been discussed. It also comprises the extensive survey of SISR techniques, including the latest developments in this field. Lastly, it covers the limitations and problems of existing techniques of SISR.