An improved 2D optical flow sensor for motion segmentation

stocker, alan (2002) An improved 2D optical flow sensor for motion segmentation. [Conference Paper]

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A functional focal-plane implementation of a 2D optical flow system is presented that detects an preserves motion discontinuities. The system is composed of two different network layers of analog computational units arranged in a retinotopical order. The units in the first layer (the optical flow network) estimate the local optical flow field in two visual dimensions, where the strength of their nearest-neighbor connections determines the amount of motion integration. Whereas in an earlier implementation \cite{Stocker_Douglas99} the connection strength was set constant in the complete image space, it is now \emph{dynamically and locally} controlled by the second network layer (the motion discontinuities network) that is recurrently connected to the optical flow network. The connection strengths in the optical flow network are modulated such that visual motion integration is ideally only facilitated within image areas that are likely to represent common motion sources. Results of an experimental aVLSI chip illustrate the potential of the approach and its functionality under real-world conditions.

Item Type:Conference Paper
Keywords:motion segmentation, vision, optical flow, neuromorphic, aVLSI, efficient, optimization
Subjects:Neuroscience > Computational Neuroscience
Computer Science > Artificial Intelligence
Computer Science > Machine Vision
Computer Science > Neural Nets
Computer Science > Robotics
ID Code:2331
Deposited By: Stocker, Dr. Alan
Deposited On:18 Jul 2002
Last Modified:11 Mar 2011 08:54


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