An Implicit Non-linear Numerical Scheme for Illumination-robust Variational Optical Flow

We present an optical flow calculation method based on the variational approach. The method uses an implicit non-linear numerical scheme that makes no assumption on the analytical form of the optical constraints and combines local and global smoothness criteria in a natural way. Defining the optical constraints with normalised cross-correlation, we obtain a technique that is robust against illumination changes in colour and greyscale images.

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