Object Extraction from a Moving Background Using Velocity Estimation and Optimal Filter in the MixeD

摘要

This paper addresses the problem to extract moving object from the moving background in the mixed domain (MixeD), which makes it possible to carry the filtering in one di- mension. Since the velocities of moving object and background are necessary for moving object extraction, we first estimate the velocities based on the appropriate spatial frequency point se- lection method in the MixeD. Then an optimal filter used for 1-D signal filtering is designed. By filtering 1-D signals over all spatial frequencies, signals with certain velocity vector are ex- tracted, while the extracted image is obtained by applying the 2-D IDFT to the filtered signals.