Abstract

Gradient methods are widely used in the computation of optical flow. We discuss extensions of these methods which compute probability distributions of optical flow. The use of distributions allows representation of the uncertainties inherent in the optical flow computation, facilitating the combination with information from other sources. We compute distributed optical flow for a synthetic image sequence and demonstrate that the probabilistic model accounts for the errors in the flow estimates. We also compute distributed optical flow for a real image sequence. 1 Introduction The recovery of motion information from visual input is an important task for both natural and artificial vision systems. Most models for the analysis of visual motion begin by extracting two-dimensional motion information. In particular, computer vision techniques typically compute twodimensional optical flowvectors which describe the motion of each portion of the image in the image plane. Methods for the re...

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