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5633944 Method and apparatus for automatic optical recognition of road signs  
A process and device for automatic recognition of an object such as a road sign includes a laser beam source providing a laser beam capable of passing through a modulator on which an intensity...
5600485 Optical pattern recognition system method of ferroelectric liquid crystal spatial light modulator  
An high-speed, high-resolution optical pattern recognition system which automatically recognizes or measures a specified pattern from two-dimensional images comprises an image display device for...
5581383 Arrangement for optical autocorrelation  
An arrangement for optical autocorrelation of laser speckle photography (LSP) photographs or particle image velocimetry (PIV) photographs using optical Fourier transforms is disclosed. The object...
5528702 Optical pattern recognition apparatus with coordinate conversion function  
An optical pattern recognition apparatus has an optical coordinate converter unit which simultaneously and in parallel converts an entered reference image and an entered input image from an...
5497433 Optical information processing apparatus and method for using computer generated hologram  
An input image of an object is optically Fourier-transformed and after coordinate-transforming the Fourier-transformed input image optically to obtain a rotation-invariant and scale-invariant...
5363455 Optical information processor  
A visual recognition apparatus for use in, for example, a robot requires an optical information processor for performing image processing or image recognition. The optical information processor...
5323472 Optical image analyzer using optical correlation and opto-electronic feedback  
An apparatus and method for image analysis utilizing an optical-electronic hybrid device. A light source generates light through an alternating series of lenses and electronically addressable...
5257322 Method and apparatus for pattern recognition and display with optical correlator  
A pattern recognition method and apparatus wherein an optical correlator and a feedback light path are provided. In the optical correlator, an input pattern whose image is formed on a first...
5239595 Optical method for identifying or recognizing a pattern to be identified  
A method of obtaining a correlation between a pattern to be identified and a number of reference patterns by irradiating and displaying the pattern to be identified and the reference patterns on...
5185815 Multiple target correlator system  
A multiple target correlation system for unambiguously detecting, locating and determining the orientation of an array of multiple targets or objects. The multiple target correlator provides a...
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...
5173954 Spatial light modulation device and image reconstructing apparatus using the same  
A spatial light modulation device includes a spatial light modulation tube and converts a one-dimensional photoelectron image into a two-dimensional electron image, rotating the two-dimensional...
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...
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...
5086483 Optical processor including electronic processing array  
A hybrid optical/electronic processor for determining the presence of a feature of interest in an input image. The system includes an optical processor for convolving the input image with a target...
5060282 Optical pattern recognition architecture implementing the mean-square error correlation algorithm  
An optical architecture implementing the mean-square error correlation algorithm, MSE=Σ[I-R]2for discriminating the presence of a reference image R in an input image scene I by computing the...
5020111 Spatial symmetry cueing image processing method and apparatus  
An optical correlation method and apparatus recognizes and locates specific patterns in a scene based on the spatial symmetries associated with that pattern. An input scene is divided into two...
4980922 System for output plane calibration of an optical correlator  
A system for calibrating the output correlation plane of an optical correlator for positional and nonlinearity information to determine the position of an input image in an input image plane of...
4972498 Alignment system for an optical matched filter correlator  
As multiple matched filter memories for optical correlators increase in size, their design, fabrication and alignment becomes increasingly complex and critical for proper operation of the optical...
4949389 Optical ranked-order filtering using threshold decomposition  
A hybrid optical/electronic system performs median filtering and related ranked-order operations using threshold decomposition to encode the image. Threshold decomposition transforms the nonlinear...
4924507 Real-time optical multiple object recognition and tracking system and method  
System for optically recognizing and tracking a plurality of objects within a field of vision. Laser (46) produces a coherent beam (48). Beam splitter (24) splits the beam into object (26) and...
4837843 Hybrid optical and electronic associative memory  
An associative memory system is provided which is a hybrid of optical and electronic components. In the preferred embodiment, a Fourier transform hologram is used to convolve a reference beam with...
4772101 Remotely controllable real-time optical processor  
An optical processor is provided which facilitates selection of any of a variety of patterns or images which are to be compared with a Fourier transform of a template image, wherein the processor...
4637056 Optical correlator using electronic image preprocessing  
An optical processing system uses spatial filtering to recognize two-dimensional functions and images. Images of real objects are captured with a television camera. The electronic signals...
4573198 Optical image processing/pattern recognition system  
A pattern recognition and optical image processing system employing dynamically alterable magneto-optic display assemblies operating as light modulators. A first pattern is digitized and used to...
4487476 Method of multivariant intraclass pattern recognition  
A method of recognizing different perspective views or images (i.e., multivariant views) of the same object (i.e., intraclass patterns). Each intraclass pattern, or different representation of the...
4118685 Holographic signature processor  
A signature is holographically recorded for correlation and parallel procing against a large library of signatures. A transient electrical signal produces a pressure wave in an optical wavefront...
3993976 Method and apparatus for pattern analysis  
A technique and apparatus for two dimensional pattern analysis utilizing a transform of the pattern enables the extraction of desired pattern information by means of spatial filtering in...
3543237 PATTERN RECOGNITION APPARATUS AND METHOD  
3248552 Photosensitive optical logic unit for use in a computer system  

Matches 51 - 80 out of 80 < 1 2