Direct detection of flow discontinuities by 3D curvature operators
by ,
Abstract:
We present an approach for the direct detection of flow discontinuities which avoids explicit computation of a dense optic flow field. It is based on regarding the time varying image as a hypersurface in four-dimensional space and on using the Gaussian curvature properties of this hypersurface as a direct indicator for the presence of motion discontinuities. An easy to implement, nonlinear operator is suggested and possible extensions of the basic scheme are discussed.
Reference:
Direct detection of flow discontinuities by 3D curvature operators (C. Zetzsche, E. Barth), In Pattern Recognition Letters, Elsevier BV, volume 12, 1991.
Bibtex Entry:
@Article{Zetzsche1991,
  author    = {C. Zetzsche and E. Barth},
  title     = {Direct detection of flow discontinuities by {3D} curvature operators},
  journal   = {Pattern Recognition Letters},
  year      = {1991},
  volume    = {12},
  number    = {12},
  pages     = {771--779},
  month     = {dec},
  abstract  = {We present an approach for the direct detection of flow discontinuities which avoids explicit computation of a dense optic flow field. It is based on regarding the time varying image as a hypersurface in four-dimensional space and on using the Gaussian curvature properties of this hypersurface as a direct indicator for the presence of motion discontinuities. An easy to implement, nonlinear operator is suggested and possible extensions of the basic scheme are discussed.},
  doi       = {10.1016/0167-8655(91)90075-w},
  publisher = {Elsevier {BV}},
  url       = {http://dx.doi.org/10.1016/0167-8655(91)90075-W},
}