@inproceedings { GreenspanBPG94,
title = {Rotation Invariant Texture Recognition Using a Steerable Pyramid},
booktitle = {International Conference on Pattern Recognition (ICPR)},
volume = {2},
year = {1994},
pages = {162-167},
author = {Hayit Greenspan and Serge Belongie and Pietro Perona and Rodney Goodman}
}