@Article{ cao07unified,
  author = 	 {F. Cao and J. Delon and A. Desolneux and P. Mus{\'e} and F. Sur},
  title = 	 {A unified framework for detecting groups and application to shape recognition},
  journal = 	 {Journal of Mathematical Imaging and Vision},
  year = 	 {2007},
  volume = 	 {27},
  number = 	 {2},
  pages = 	 {91--119}
}