Spatio-temporal filter and method

• US 20040193670A1
• Filed: 01/07/2004
• Published: 09/30/2004
• Est. Priority Date: 05/21/2001
• Status: Abandoned Application

• Current Assignee: Jeffrey S. Scott, John D. Langan, Peter Stobbe
• Original Assignee: Jeffrey S. Scott, John D. Langan, Peter Stobbe
• Inventors: Scott, Jeffrey S., Stobbe, Peter, Langan, John D.
• Application Number:
  US10/753,783
• Publication Number:
  US 20040193670A1
• Time in Patent Office: Days
• US Class Current: 708/819
• CPC Class Codes: G06E 3/005 using electro-optical or opto-electronic means

Abstract

A system, apparatus and methods are disclosed for the spatial and temporal processing of time dependant array data using analog signal processors. In one embodiment, a programmable array of switched capacitors is used to provide tunable parameters for controlling the desired processing of input data streams. The switched capacitor implementation of a spatial filter provides a massively parallel device that can be programmed to perform isotropic and spatially-oriented anisotropic filtering with low power demands. The system further includes the ability to combine differently filtered output streams with independent multiplicative weights. In another embodiment, the nonlinear spatio-temporal motion energy of a two-dimensional image stream data is computed. The spatial-temporal filter is able to combine multiple analog filters, both spatial and temporal, to perform complex spatial-temporal filtering operations implemented by Gaussian kernel filtering chips. It enables the use of analog spatial-temporal filtered data provided by the chip for computing scene motion energy.

Claims

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10. An apparatus operable for spatial and/or temporal processing of time dependant array data comprising a plurality of analog signal processors including a thin film spatial frequency filter and/or a switched capacitor spatial frequency filter.

11. The apparatus of claim 10 wherein said plurality of analog signal processors are configured in a parallel arrangement with individual multiplicative weights operable for selectively performing high pass, band pass and low pass spatial frequency and temporal filtering to achieve filtering basis function control.

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