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TY - INPR ID - cogprints82 UR - http://cogprints.org/82/ A1 - Stocker, Alan A1 - Douglas, Rodney Y1 - 1998/// N2 - In 1986, Tanner and Mead \cite{Tanner_Mead86} implemented an interesting constraint satisfaction circuit for global motion sensing in aVLSI. We report here a new and improved aVLSI implementation that provides smooth optical flow as well as global motion in a two dimensional visual field. The computation of optical flow is an ill-posed problem, which expresses itself as the aperture problem. However, the optical flow can be estimated by the use of regularization methods, in which additional constraints are introduced in terms of a global energy functional that must be minimized. We show how the algorithmic constraints of Horn and Schunck \cite{Horn_Schunck81} on computing smooth optical flow can be mapped onto the physical constraints of an equivalent electronic network. PB - MIT Press, Cambridge KW - energy minimzation KW - optical flow KW - intensity constraint KW - aVLSI KW - neuromorphic KW - vision sensor KW - motion detection KW - constraint solving KW - analog network KW - real-time KW - collective computatio TI - Computation of Smooth Optical Flow in a Feedback Connected Analog Network AV - public ER -