Sub pixel image registration is required in many applications. In this paper

firstly recent sub pixel registration algorithms as well as classical algorithms are classified into three categories: interpolation based method

extension of phase correlation and method that formulates the problem as an optimization problem. Basic theories

performance characteristics

and recent improvements of the three methods are presented in detail. Secondly

the reviewed methods are evaluated in some criterions

factors affecting performance are analyzed. And lastly future development is discussed.