@inproceedings{Minhas20093D,

  title={3D Shape from Focus and Depth Map Computation Using Steerable Filters},

  author={Minhas, Rashid and Mohammed, Abdul A. and Wu, Q. M. Jonathan and Sidahmed, Maher A.},

  booktitle={International Conference on Image Analysis and Recognition},

  pages={573-583},

  year={2009},

}