Image features based on a new approach to 2D rotation invariant quadrature filters
@InProceedings{felsberg02eccv,
  author = 	 {M. Felsberg and G. Sommer},
  title = 	 {Image features based on a new approach to 2{D} rotation invariant quadrature filters},
  booktitle = 	 {Computer Vision, ECCV02, Kopenhagen, 2002},
  year =	 2002,
  editor =       {A. Heyden and G. Sparr and M. Nielsen and P. Johansen},
  volume =       {2350},
  series =       {LNCS},
  pages =        {369-383},
  publisher =    {Springer},
  }