D
David P. Casasent
Researcher at Carnegie Mellon University
Publications - 693
Citations - 10507
David P. Casasent is an academic researcher from Carnegie Mellon University. The author has contributed to research in topics: Image processing & Optical correlator. The author has an hindex of 44, co-authored 693 publications receiving 10367 citations. Previous affiliations of David P. Casasent include Carnegie Learning & Center for Excellence in Education.
Papers
More filters
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Minimum average correlation energy filters
TL;DR: The synthesis of a new category of spatial filters that produces sharp output correlation peaks with controlled peak values is considered, and these filters are referred to as minimum average correlation energy filters.
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Position, rotation, and scale invariant optical correlation
TL;DR: A new optical transformation that combines geometrical coordinate transformations with the conventional optical Fourier transform is described, which is invariant to both scale and rotational changes in the input object or function.
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Multivariant technique for multiclass pattern recognition.
TL;DR: A technique for multiclass optical pattern recognition of different perspective views of an object is described and a single averaged matched spatial filter is produced from a weighted linear combination of these functions.
Journal ArticleDOI
Unified synthetic discriminant function computational formulation.
TL;DR: A general basis function and hyperspace description of SDFs is provided, a derivation showing the generality of the correlation matrix observation space is advanced, and a unified SDF filter synthesis technique is detail for five different types of pattern recognition problem.
Journal ArticleDOI
Application Of The Liquid Crystal Light Valve To Real-Time Optical Data Processing
W. P. Bleha,L. T. Lipton,E. Wiener-Avnear,Jan Grinberg,Philip G. Reif,David P. Casasent,H. B. Brown,B. V. Markevitch +7 more
TL;DR: In this article, a hybrid field effect liquid crystal light valve (LCLV) is proposed for real-time coherent optical data processing, where the input image is directed onto the photo-conductor to reduce the impedance of the photoconductor, thereby switching the ac voltage that is impressed across the electrodes onto the liquid crystal to activate the device.