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5276636 Method and apparatus for adaptive real-time optical correlation using phase-only spatial light modulators and interferometric detection  
A video-rate correlator constructed with a phase-only spatial light modulator and video camera. The phases of the Fourier spectra of a test and reference image are measured by real-time fringe...
5268679 Optical data processing device  
An optical data processing device has successive light intensity modulating levels, each level including a matrix of cells (35), each cell having therein an element (31) of electrically...
5264930 Fast light interconnected processor  
A fast light interconnected processor device for image processing includes an image sensor for producing a line scan signal, a one-dimensional line display for producing a light having an...
5262968 High performance architecture for image processing  
The logical computer architecture is specifically designed for image processing, and other related computations. The architecture is a data flow concept comprising three tightly coupled...
5251052 System for solving boolean equations using optical lookup tables  
A reconfigurable digital optical lookup table for solving Boolean equations sing an array of bistable optical devices is provided. A single light source is divided into a matrix of light beams...
5247473 Method and apparatus for performing a multiple-input optical arithmetic comparison  
An optical arithmetic comparator (OAC) is disclosed which is capable of comparing multiple numbers simultaneously, and indicating the common value of the multiple numbers being compared if the...
5235440 Optical interconnector and highly interconnected, learning neural network incorporating optical interconnector therein  
A variable weight optical interconnector is disclosed to include a projecting device and an interconnection weighting device remote from the projecting device. The projecting device projects a...
5235439 Volume-holographic inner product processor  
A pattern recognition apparatus and a method for operating same. The apparatus includes a volume holographic medium (4) having a plurality of Fourier-space volume holograms representing pattern...
5235461 Optical encoding and correlation system  
An optical correlator system for encoding a complex optical image onto a erent beam of light such as a laser and comparing it with a reference complex image. One embodiment of the invention...
5233554 Programmable optical correlator  
An optical correlation system employing the degenerate four wave mixing uses cross-polarized pump and probe beams to prevent the writing of a volume transmission phase hologram in a...
5220642 Optical neurocomputer with dynamic weight matrix  
An optical computer for performing product and/or sum operations on input vector information and matrix information includes an array of light emitting elements, the array having a plurality of...
5220643 Monolithic neural network element  
A neural plane, which can form the basis of a neural network or a component thereof, is comprised by an optical modulator, an electrical non-linearity circuit and an optical detector...
5220622 Data base searching  
A holographic optical correlator includes a matched optical filter and control means therefor including a memory. In use searching for occurrences of an item to be found is carried out by the...
5214534 Coding intensity images as phase-only images for use in an optical correlator  
A method of performing image correlation in a Fourier transform correlator utilizes phase-encoding of the input image as a phase object with a normalized amplitude component. Phase-only reference...
5208685 Compact optical processor  
This invention is a compact optical processor including a coherent light source, plural optical elements that together form a Fourier transform interferometer, and a two dimensional detector...
5187598 Optical processor for pulse train identification  
A pulse train in the presence of random noise and other pulse trains is identified by controlling pixels in a raster display in accordance with incoming signals; using the raster display to...
5185715 Data processing systems and methods for linear programming  
Data processing systems are described for processing linear programming problems. The invention employs optical (100) or digital (150) processors to perform Gaussian pivot operations by performing...
5175775 Optical pattern recognition using multiple reference images  
An optical pattern recognition method which can be applied to a joint transform correlator operative to effect correlation processing between a plurality of reference images and at least a single...
5173790 Adaptive filter with correlation weighting structure  
An adaptive filter having a correlation weighting structue having a single Bragg cell, acting as a tapped delay line and having an input and an output, the Bragg cell intensity modulating a write...
5157784 Memory control system responsive to determination, allocating adjacent test space for editing space, relocating adjacent text and editing selected text  
A memory control unit comprising: a first memory for storing a plurality of text information; a second memory for storing title information to segment those text information stored in the first...
5155606 Glint suppression technique  
Glints (e.g., images of point sources attributable to specular reflections) are suppressed in the focal plane of an optical imaging system by: a) Fourier-transforming an image of the imaging...
5155779 Optical circulating shift register  
An all-optical circulating shift register encodes a received optical clock signal with a value derived from an encoded optical signal received at a control port thereof. A data input to the shift...
5151822 Transform digital/optical processing system including wedge/ring accumulator  
A transform digital optical processing system generates a transform signal of an image. Fourier or other well-known transforms may be employed. The transform signal may be generated in one of two...
5150229 Optical correlator  
An optical correlator according to the present invention generates a cross-correlation peak of two patterns of pictorial information to be compared. It generates pictorial patterns of a sum of the...
5148496 Optical correlator with symmetric reflective optics  
A discoid optical correlator system having a plurality of reflective optical components, a source of electromagnetic radiation, such as visible light, and an output detector which are positioned...
5148316 Averaged amplitude encoded phase-only filters for use in Fourier transform optical correlators  
Method of producing an averaged amplitude mask, for use in conjunction with a phase only filter (pOF) to provide an averaged amplitude matched filter (AAMF) in a Fourier transform optical...
5138489 Spatially incoherent holographic correlator  
An incoherent holographic correlator comprising a two-dimensional array of surface-emitting lasers which are selectable in an arbitrary pattern so as to emit a beam containing the pattern. The...
5136532 Coherent signal processing device using an optical delay line and application thereof to filtering correlation product and spectral analysis  
A coherent signal processing device is provided using a monomode optical fiber as delay line, comprising a source and a ring interferometer with a bidirectional coupler and a monomode optical...
5132842 Optical image transformation system  
An optical system is provided for the transformation of input images to be correlated by a pattern recognition system. A pulse of light from a laser carries an input image to a beam splitter. The...
5132813 Neural processor with holographic optical paths and nonlinear operating means  
An optical apparatus for simulating a highly interconnected neural network is disclosed as including a spatial light modulator (SLM), an inputting device, a laser, a detecting device, and a...
5132831 Analog optical processing for the construction of fractal objects  
An analog optical processor for performing affine transformations and constructing fractal objects. An optical processor for optically performing an iterated affine transformation includes a...
5129041 Optical neural network processing element with multiple holographic element interconnects  
A neural network processing element uses primarily optical components to model a biological neuron having both spatial and temporal dependence. The neural network processing element includes a...
5124842 Image input/output apparatus  
An image input/output apparatus which can reproduce an image having a large focal depth, without decreasing the resolution and luminance. The apparatus has a wide range of practical applications,...
5121228 Holographic learning machine  
A holographic learning machine comprising a volume holographic recording medium, 2N photo-detectors receiving light diffracted from the medium, and N electrical circuits subtracting respective...
5121248 Acousto-optic time-integrating signal processor  
An acousto-optic correlator for wideband signals. The invention is defined by and relates to device in which a laser beam is split into two paths of a Mach-Zehnder interferometer arrangement. A...
5119443 Nonlinear joint transform optical correlator having varying degrees of nonlinearity  
In a nonlinear joint transform image correlator, the Fourier transform interference intensity is nonlinearly transformed to provide higher correlation peak intensity and a better defined...
5105380 Electro-optic channelized modulator and receiver  
A wideband electrical input signal is applied to a tapped delay line to produce a spatial representation of the input signal distributed along the delay line taps. Inputs of individual elements of...
5095459 Optical neural network  
An optical neural network which imitates a biological neural network, to provide an associative and/or pattern recognition function, is made of light emitting elements to represent an input neuron...
5080464 Optical neural network apparatus using primary processing  
For inputting a two-dimensional image into an optical neural network apparatus, a primary processing device is used to extract the characteristic feature of an object pattern. Thereafter,...
5079555 Sequential image synthesizer  
A method and apparatus for producing an image of a target area, by: at an observation location spaced from the target area, transmitting a beam of electromagnetic radiation toward the target area,...
5078501 Method and apparatus for optically evaluating the conformance of unknown objects to predetermined characteristics  
The conformance of an unknown object to predetermined characteristics is evaluated through a characteristic signature, using its transform image. The presence at an inspection station of each...
5076662 Electro-optical IFS finder  
An electro-optical system that implements the self-tiling process of fining proper Iterated Function Systems for modeling natural objects. The system can operate in two different modes, a...
5063531 Optical neural net trainable in rapid time  
Among light emitting and sensitive element pairs arranged along rows and columns of a matrix in each of first and second layers of an optical computer operable as a neural network with one-to-one...
5056039 Holographic interconnect system  
A system to produce interconnections between a planar input array and a planar output array using a holographic planar array made by a single exposure or multiple exposures of a photosensitive...
5054913 Method and apparatus for measuring the velocity of a fluid using analysis of Young's fringes in speckle photography  
A method and apparatus for measuring the velocity of a fluid in which a double-exposure image of the speckle pattern or particle images of tracer particle in a fluid is irradiated with a...
5044726 Device for the correlation between optical beams  
A device for the correlation between optical beams having spatially modulated intensities has an active glass window, which on one side is illuminated at the same time by a reading and a pumping...
5040135 Method of fringe-freezing of images in hybrid-optical interferometric processors  
The invention is a method for obtaining fringe visibility in hybrid-optical interferometric processors. Encoded data defining an image is utilized to provide both a timing input signal and a...
5040140 Single SLM joint transform correaltors  
A simple, low cost, high performance joint Fourier transform correlator, which requires only a single spatial light modulator, is disclosed. Input and reference images are recorded upon a single...
5032010 Optical serial-to-parallel converter  
An optical serial-to-parallel converter constructed from at least two optical shift registers connected in cascade, each optical shift register having a 1×2 optical switch connected to its output....
5029220 Optical joint correlator for real-time image tracking and retinal surgery  
A method for tracking an object in a sequence of images is described. Such sequence of images may, for example, be a sequence of television frames. The object in the current frame is correlated...

Matches 51 - 100 out of 330 < 1 2 3 4 5 6 7 >