@InProceedings{ cadik07color_to_gray,
  author =     {Laszlo Neumann and Martin {\v{C}}ad\'{i}k and Antal Nemcsics},
  title =      {An Efficient Perception-Based Adaptive Color to Gray Transformation},
  booktitle =  {Proceedings of Computational Aesthetics 2007},
  pages =      {73-- 80},
  publisher =  {Eurographics Association},
  year =       {2007},
  address =    {Banff, Canada},

}