@techreport{Zuffi:TR:2013,
  title = {Puppet Flow},
  abstract = {We introduce Puppet Flow (PF), a layered model describing the optical flow of a person in a video sequence.  We consider video frames composed by two layers: a foreground layer corresponding to a person, and background. 
  We model the background as an affine flow field. The foreground layer, being a moving person, requires reasoning about the articulated nature of the human body.  We thus represent the foreground layer with the Deformable Structures model (DS), a parametrized 2D part-based human body representation. We call the motion field defined through articulated motion and deformation of the DS model, a Puppet Flow. By exploiting the DS representation, Puppet Flow is a parametrized optical flow field, where parameters are the person's pose, gender and body shape.
  },
  number = {7},
  institution = {Max Planck Institute for Intelligent Systems},
  month = oct,
  year = {2013},
  author = {Zuffi, Silvia and Black, Michael J.},
  month_numeric = {10}
}