A Survey on comparative study of MOTION ESTIMATION techniques

Block matching motion estimation is a key Component in video compression because of its high computational complexity. The process of motion estimation has become a bottleneck problem in many video applications. Applications include HDTV, multimedia communications, video conferencing, etc. Motion estimation is a useful in estimating the motion of any object. Motion estimation has been conventionally used in the application of video encoding but nowadays researchers from various fields other than video encoding are turning towards motion estimation to solve various real life problems in their respective fields. In this paper, we present a review of block matching based motion estimation algorithms, reduced complexity of motion estimation techniques and a comparative study across all different algorithms. Also the aim of this study is to provide the reader with a feel of the relative performance of the algorithms, with particular attention to the important trade-off between computational complexity, prediction quality, result quality and other various applications