Accurate Optical Flow Based on Spatiotemporal Gradient Constancy Assumption
Variational methods for optical flow estimation are
known for their excellent performance. The method proposed by Brox
et al.  exemplifies the strength of that framework. It combines
several concepts into single energy functional that is then minimized
according to clear numerical procedure. In this paper we propose
a modification of that algorithm starting from the spatiotemporal
gradient constancy assumption. The numerical scheme allows to
establish the connection between our model and the CLG(H) method
introduced in . Experimental evaluation carried out on synthetic
sequences shows the significant superiority of the spatial variant of
the proposed method. The comparison between methods for the realworld
sequence is also enclosed.
optical flow, variational methods, gradient constancy assumption.