Multiresolution approach for image processing

Multiresolution approaches provide a powerful tool for image process-ing. In this report,we propose an overview of different types of multiresolu-tion. We show this methodology is composed of two main complementarysteps, the bottom-up and the top-down strategies. We also present someimportant existing applications like filtering and features extraction. Fi-nally, a brief comparison of the different techniques is given and some newinteresting possible use of this tool are exhibited.