The SVD approach for steerable filter design
@InProceedings{sommer98monterey,
  author = 	 {G. Sommer and M. Michaelis and R. Herpers},
  title = 	 {The {S}{V}{D} approach for steerable filter design},
  booktitle = 	 {Proc. Int. Symposium on Circuits and Systems 1998},
  year =	 1998,
  address =	 {Monterey, California},
  volume =       5,
  pages =        {349-353}
}