In search of the elusive flow field

A specific set of problems must be overcome before an optical-flow field can be derived from an image sequence. These problems are discussed and an outline of a scheme for overcoming these obstacles is presented. A 2-D motion sensor is presented which is capable of measuring edge velocity in twelve separate directions at any point in the image. However, because of the aperture problem, the sensors can only determine the velocity component in the direction orthogonal to the edge. A second stage which uses a cosine-weighted voting scheme is used to derive the true flow field from the edge velocities. The whole system is based on a parallel network of connections and weights and is potentially a very fast method of obtaining the 2-D flow field.<<ETX>>

[1]  D Marr,et al.  Theory of edge detection , 1979, Proceedings of the Royal Society of London. Series B. Biological Sciences.

[2]  Greg L. Zacharias,et al.  A visual cueing model for terrain-following applications , 1983 .

[3]  C. Koch,et al.  The analysis of visual motion: from computational theory to neuronal mechanisms. , 1986, Annual review of neuroscience.

[4]  Philip Kahn,et al.  Local Determination of a Moving Contrast Edge , 1985, IEEE Transactions on Pattern Analysis and Machine Intelligence.

[5]  Berthold K. P. Horn,et al.  Determining Optical Flow , 1981, Other Conferences.

[6]  Tomaso Poggio,et al.  Computational vision and regularization theory , 1985, Nature.

[7]  Andrea J. van Doorn,et al.  Invariant Properties of the Motion Parallax Field due to the Movement of Rigid Bodies Relative to an Observer , 1975 .

[8]  E. Adelson,et al.  Phenomenal coherence of moving visual patterns , 1982, Nature.

[9]  Claude L. Fennema,et al.  Velocity determination in scenes containing several moving objects , 1979 .

[10]  J. Gibson.  The perception of the visual world , 1951 .

[11]  D J Heeger,et al.  Model for the extraction of image flow. , 1987, Journal of the Optical Society of America. A, Optics and image science.

[12]  K. Nakayama,et al.  Optical Velocity Patterns, Velocity-Sensitive Neurons, and Space Perception: A Hypothesis , 1974, Perception.

[13]  A J Ahumada,et al.  Model of human visual-motion sensing. , 1985, Journal of the Optical Society of America. A, Optics and image science.

[14]  H. C. Longuet-Higgins,et al.  The interpretation of a moving retinal image , 1980, Proceedings of the Royal Society of London. Series B. Biological Sciences.