Curvature estimation in oriented patterns using curvilinear models applied to gradient vector fields

@Article\{VVV2001,
  author       = "Joost van de Weijer and Lucas J.  van Vliet and Piet W. Verbeek and Michael  van Ginkel",
  title        = "Curvature estimation in oriented patterns using curvilinear models applied to gradient vector fields",
  journal      = "IEEE Transaction on Pattern Analysis and Machine Intelligence",
  number       = "9",
  volume       = "23",
  pages        = "1035--1042",
  month        = "sept",
  year         = "2001",
  ifactor      = "2.289",
  area         = "Computer Sci. Artificial Int.",
  url          = "http://cat.uab.cat/Public/Publications/2001/VVV2001"
}