@inproceedings{wu2008motion,
  title={Motion estimation approach based on dual-tree complex wavelets},
  author={Wu, Changzhu and Wang, Qing and Wang, Hongxiao},
  booktitle={Pattern Recognition, 2008. ICPR 2008. 19th International Conference on},
  pages={1--4},
  year={2008},
  organization={IEEE}
}