Abstract:
Zooming a picture is ver essential in the field where someone wants to obtain more detailed information from
an image. Low resolution(LR) images do not contain more information so to retrieve more information from
that image Super-resolution(SR) is applied on LR images. The resolution enhancement work began in 1984
when Tsai and Huang [1] has introduced a mathematical model to obtain a single high-resolution image from a
single or multiple LR images. This paper provides the review of the work done in the area of super-resolution in
the spatial as well as in the frequency domain. This paper is organized into following sections. Section II
describes spatial domain methods of super-resolution, section III gives method in the frequency domain, section
IV contains comparison between some of the well-known algorithms and finally in the last section Conclusion is
drawn.