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4449193 |
Bidimensional correlation device
A device which provides bidimensional correlation of an image obtained by the scanning of electromagnetic or acoustic waves of the reference image. The scanned image and the reference image are...
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4396903 |
Electro-optical system for correlating and integrating image data from frame-to-frame
An electro-optical system which integrates the image pattern information, extracted from a plurality of image frames and identified as belonging to a common candidate object, to form a composite...
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4389633 |
Coded aperture imaging with self-supporting uniformly redundant arrays
A self-supporting uniformly redundant array pattern for coded aperture imaging. The present invention utilizes holes which are an integer times smaller in each direction than holes in conventional...
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4360797 |
Coded aperture imaging with uniformly redundant arrays
A system utilizing uniformly redundant arrays to image non-focusable radiation. The uniformly redundant array is used in conjunction with a balanced correlation technique to provide a system with...
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4322808 |
Coding and decoding artifact-free images of objects
A method of coding and decoding of objects by means of a large number of point-like radiation sources which are subdivided into two groups. Two recordings are made of an image object. A first...
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4308521 |
Multiple-invariant space-variant optical processing
A multiple-invariant, space variant optical processor in which two functions described by any number of separate distortion parameters can be correlated with no loss in signal-to-noise ratio of the...
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4288781 |
Currency discriminator
A currency discriminator for determining the denomination of a bank note or the like is disclosed. It includes a source of light directed at the note to be identified. A 2 mm×80 mm stripe is...
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4277137 |
Coherent optical correlator
Reference scenes stored in a filter set containing an array of sets of suimposed, holographic, matched filters are optically correlated with input images displayed on an optically-addressed, liquid...
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4259661 |
Apparatus and method for recognizing a pattern
Apparatus and method are provided for recognizing a presented pattern such as a machine printed character. The apparatus includes a driving assembly for moving a character bearing medium into a...
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4244029 |
Digital video correlator
A digital video correlator wherein a reference image and a live image are digitized and compared against each other in a shifting network to determine the correlation or degrees thereof existing...
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4228420 |
Mosaic of coded aperture arrays
The present invention pertains to a mosaic of coded aperture arrays which is capable of imaging off-axis sources with minimum detector size. Mosaics of the basic array pattern create a circular on...
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4164728 |
Correlation techniques
In a correlation system, such as may be used in an autolock follow arrangement, the correlation is effected on the basis of line integrals of data relating to pictures of substantially the same...
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4115801 |
Optical image correlator tracking filter circuit
A tracking filter circuit for use with optical image correlators is presented. The output signal of the optical image correlator exhibits a frequency content shift during operation due to the...
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4084255 |
Positional, rotational and scale invariant optical correlation method and apparatus
A method and electro-optical apparatus for correlating two functions, f 1 (x,y) and f 2 (x,y) which are shifted, scaled and rotated versions of each other without loss of signal-to-noise and...
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4073010 |
Correlation methods and apparatus utilizing mellin transforms
Correlation methods and apparatus are disclosed which make use of Mellin transforms that are scale and shift invariant. There is no loss in the signal-to-noise ratio of the correlation, and data is...
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3952299 |
Data line correlator
A line correlator for use as a pattern matching device in a high resolution radar system. Binary coded a priori target area information is digitally correlated with binary coded video range trace...
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3849762 |
DIGITAL INFORMATION PROCESSING APPARATUS FOR PATTERN RECOGNITION
A digital information processing apparatus for pattern recognition comprising a memory unit for storing information consisting of a plurality of words representing an unknown character and a...
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3737856 |
AUTOMATED OPTICAL COMPARATOR
Apparatus for automating the determination of the dimensional measurements of an object having its silhouette displayed on an optical comparator and providing a digital representation of those...
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3699517 |
HANDWRITING AUTHENTICATION TECHNIQUE
Apparatus and method for measuring and computing velocity and acceleration of a pen point and the pen-paper contacts during writing of a signature and comparing derived data with reference data...
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3662104 |
ELECTRONIC AREA CORRELATOR WITH MULTIPLE INPUT SIGNALS
A closed loop electronic area correlation tracker consisting of an electrc image storage tube with microchannel electron multipliers as input devices to allow use of a multiplicity of simultaneous...
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3617625 |
IMAGE CORRELATION SYSTEM
A dual image correlation system wherein a pair of video signals representing detail along corresponding paths in compared images are first filtered in low-pass filter circuits and then...
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3534332 |
ELECTRONIC SYSTEMS AND APPARATUS FOR RECOGNISING PRINTED CHARACTERS
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3521236 |
ELECTRO-OPTICAL APPARATUS FOR RECOGNIZING PRINTED OR WRITTEN CHARACTERS
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3520585 |
IMAGE OR CHARACTER RECOGNITION BY HOLOGRAPHIC TECHNIQUES
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3510223 |
OPTICAL CROSS-CORRELATION AND CONVOLUTION
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3496290 |
BOOTSTRAP CORRELATION UTILIZING A DUAL SECTION ELECTRON IMAGE STORAGE TUBE
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3492646 |
CROSS CORRELATION AND DECISION MAKING APPARATUS
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3492469 |
OPTICAL SYSTEM FOR AUTO-CORRELATING AND AUTO-CONVOLVING RECORDED SIGNALS
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3492470 |
REACTIVE ANALOG CORRELATOR
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3479494 |
INFORMATION PROCESSING AND DISPLAY WITH OPTICAL CORRELATION
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3476197 |
ELECTRON IMAGE CORRELATOR TUBE WITH IMPROVED READ-OUT MEANS
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3471831 |
ELECTRONIC SYSTEMS AND ARRANGEMENTS FOR RECOGNISING PRINTED CHARACTERS
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3413602 |
Data conversion techniques for producing autocorrelation functions
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3398269 |
Polychromatic optical correlator
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3384875 |
Reference selection apparatus for cross correlation
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3308430 |
Character recognition systems and apparatus
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3283133 |
Method and apparatus for the optical cross-correlation of two functions
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3278899 |
Method and apparatus for solving problems, e.g., identifying specimens, using order of likeness matrices
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3267431 |
Adaptive computing system capable of being trained to recognize patterns
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3247483 |
Character recognition system employing a plurality of spaced serial transducers
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3196396 |
Specimen identification techniques employing binary non-linear functions of autocorrelation functions
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3196399 |
Specimen identification techniques employing selected functions of autocorrelation functions
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3196397 |
Specimen identification techniques employing nth-order autocorrelation functions
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3196395 |
Character recognition systems employing autocorrelation
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3196394 |
Specimen identification techniques employing non-linear functions of autocorrelation functions
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3184712 |
Core correlation matrix reader
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3167743 |
Unambiguous identification systems
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3158840 |
Specimen identification apparatus and method
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3152318 |
Character recognizer
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3030021 |
Computing apparatus
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