conference paper

Conference/ProceedingsIEEE Int. Conf. on Image Processing (ICIP '05)
Start date11.09.2005
End date14.09.2005
AddressGenova, Italy
Author(s)Jang-Heon Kim, Thomas Sikora
TitleHybrid Recursive Energy-based Method for Robust Optical Flow on Large Motion Fields
AbstractAbstract—We present a new reliable hybrid recursive method
for optical flow estimation. The method efficiently combines the
advantage of discrete motion estimation and optical flow estimation in a recursive block-to-pixel estimation scheme.
Integrated local and global approaches using the robust statistic
of anisotropic diffusion remove outliers from the estimated
motion field. We separately describe the process with two
frameworks i.e. an incremental updating framework and a robust energy minimization framework. With robust error norms of Perona and Marik anisotropic diffusion, the
formulation usually leads to non-convex optimization problems.
Thus, the solution has many local minima, and convergence to
the global minima is not guaranteed. Our hybrid recursive
energy-based method employs a hierarchical block-to-pixel
estimation concept to prevent this problem. The experimental
results prove the excellent performance on several large motion fields.
Key wordshybrid recursive method, dense optical flow, discrete motion estimation, block-to-pixel estimation