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7206456 |
Video coding and decoding
A video coding and decoding method, wherein a picture is first divided into sub-pictures corresponding to one or more subjectively important picture regions and to a background region sub-picture,...
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7006097 |
Method and apparatus for compression and reconstruction of animation path using linear approximation
Methods for compressing and reconstructing an animation path using linear approximation, apparatuses for performing the methods, and data formats therefor are provided. The apparatus for...
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6688449 |
Image pickup device and pattern identification apparatus
A pattern identification apparatus is used to speedily identify tokens at a game arcade. The apparatus is inexpensive and has an image pickup device ( 15 ). The image pickup device has an area...
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5862305 |
Logic filters for resolution conversion of digital images
The present invention is a method and apparatus for logic based resolution conversion and enhancement of digital images. The invention employs a selectively controllable architecture wherein a...
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5787198 |
Text recognition using two-dimensional stochastic models
Pseudo two-dimensional hidden Markov models (HMMs) are used to represent text elements, such as characters or words. Observation vectors for each text element are based on pixel maps obtained by...
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5774585 |
Method of determining the shape of a body
In order to permit a method of determining the shape of a body, which comprises the step of detecting a contour of said body, to be executed rapidly and with little computing effort, the contour of...
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5684892 |
Method for pattern recognition
A method for pattern recognition is provided which creates statistics in a data base, based upon a number of characteristics extracted from a large number of samples of the pattern to be...
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5438630 |
Word spotting in bitmap images using word bounding boxes and hidden Markov models
Font-independent spotting of user-defined keywords in a scanned image. Word identification is based on features of the entire word without the need for segmentation or OCR, and without the need to...
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5416851 |
Image analysis based on location sampling
An image is analyzed by random or pseudorandom sampling. Information about attributes such as skew, typeface, and character size and spacing is obtained by measuring a characteristic at a number of...
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5091966 |
Adaptive scaling for decoding spatially periodic self-clocking glyph shape codes
Weighted and unweighted convolution filtering processes are provided for decoding bitmap image space representations of self-clocking glyph shape codes and for tracking the number and locations of...
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5062141 |
Method of segmenting characters in lines which may be skewed, for allowing improved optical character recognition
A method of segmenting characters of a document image comprises the steps of dividing the document image into a plurality of divided regions and setting a check width with respect to each of the...
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5018210 |
Pattern comparator with substage illumination and polygonal data representation
A laser pattern inspection and/or writing system which writes or inspects a pattern on a target on a stage, by raster scanning the target pixels. Inspection can also be done by substage...
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4783835 |
Method of character recognition
An improved apparatus and method of recognizing a character is disclosed. The side frame structures of characters or figures are discriminated by left and right margin detectors and corresponding...
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4490850 |
Matrix character recognition
A character recognition system is disclosed in which each row of a plurality of parallel rows of binary signals representing the configuration of an unknown character is sequentially compared to a...
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4468808 |
Feature extraction system for digitized character information
Disclosed is an extraction method for optical character recognition systems in which the necessary character features for recognition process are extracted from a character information detected and...
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4404684 |
Object solid figure recognizing method and apparatus
An apparatus and method for recognizing the shape of solid objects in which an object to be recognized is passed through a cylindrical rotary unit upon a transparent conveyor. Inside the...
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4193056 |
OCR for reading a constraint free hand-written character or the like
A character pattern to be recognized is divided into a predetermined number of parallel segments of equal width extending in one direction and character information on respective ones of the...
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4180800 |
Character reading system
An optical character reading system first determines the height and width of the character to determine its authenticity and then examines the features of each line and/or column and classifies...
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4180799 |
Apparatus and method for recognizing characters
An optical reader for recognizing printed characters, such as alpha-numeric characters, is disclosed. The characters are scanned in parallel, vertical slices by a photodiode array contained in a...
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4163214 |
Character recognition system
A character in a pattern area is optically scanned and the scanned black and white signal cells of the character are stored in a digital memory. The character in the digital memory is recognized...
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4155072 |
Character recognition apparatus
A character is scanned in a plurality of parallel scan lines and the starting and ending positions of the character in the respective scan lines are detected. The portions of the character between...
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4075605 |
Character recognition unit
A method and system for automatic optical character recognition wherein a continuous flow of image data is processed at a scan rate high compared to the relative movement of the...
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4066998 |
Method and apparatus for discriminating between characters in character recognition systems
Recognition of characters, particularly handwritten characters, is facilitated by examining a character for holes (i.e. non-character portions enclosed by character portions), split characters...
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4061998 |
Character recognition equipment
Herein disclosed is a character recognition system which comprises a video input device which obtains character video signals by raster scanning characters which exist on a medium; a quantization...
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4048615 |
Automated character recognition system
A reliable optical character recognition system substantially insensitive to variations in character stroke size is provided for reading numeric and special characters printed on a document surface...
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3970991 |
Character recognition system
A scanning device scans the entire surface of a character pattern, and a memory device stores therein the binary coded character pattern information obtained from the scanning device, and a...
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3921136 |
Automatic pattern recognition method and apparatus particularly for optically recognizing characters
Apparatus for recognizing multi-font alphanumeric characters comprises a single line of detectors for scanning the characters along a plurality of continuous scan lines each extending in the...
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3873972 |
Analytic character recognition system
A character recognition system employs analytic techniques to develop a set of codes representative of the geometry of a character by means of a two-dimensional matrix of digital video elements of...
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3852715 |
CHARACTER RECOGNIZING SYSTEM
A character recognizing system determines a character in a character writing frame on a card. The frame defines a character writing region having at least one character writing guide point therein...
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3845466 |
SYSTEM AND METHOD FOR CHARACTER RECOGNITION
A character recognition system is disclosed in which each character in a retina, defining a scanning raster, is scanned with random lines uniformly distributed over the retina. For each type of...
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3840856 |
CHARACTER RECOGNITION TECHNIQUES
A method of identifying a presented character, and the apparatus therefor, are provided in accordance with the teachings of the present invention. The presented character is scanned to derive an...
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3810162 |
NONLINEAR CLASSIFICATION RECOGNITION SYSTEM
In a classification recognition system comprised of a trainable non-linear signal processor having at least one input signal U and one desired output signal Z applied thereto during training and at...
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3764980 |
SYMBOL RECOGNITION SYSTEM PARTICULARLY FOR ALPHA-NUMERIC CHARACTERS
A combination of two symbol recognition systems, one of which is of the logic type and the other of the analogue type. The latter is put in operation by the logic system in case of ambiguity in the...
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3714632 |
CHARACTER RECOGNITION METHOD AND SYSTEM WITH STROBE CONTROL
A character recognition method and system performs dynamic analysis of information derived in scanning characters for character identification. A linear array of plural sensors scans characters to...
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3714631 |
CHARACTER RECOGNITION METHOD AND SYSTEM
A character recognition method and system performs dynamic analysis of information derived in scanning characters for character identification. A linear array of plural sensors scans characters to...
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3714630 |
CHARACTER RECOGNITION METHOD AND SYSTEM WITH LEADING/TRAILING EDGE CONTROL
A character recognition method and system performs dynamic analysis of information derived in scanning characters for character recognition. A linear array of plural scanning elements scans...
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3652991 |
ARRANGEMENT FOR CHARACTER RECOGNITION OF CHARACTERS WHICH ARE BROKEN UP INTO CHARACTERISTIC SHAPE ELEMENTS
The present invention relates to automatic character recognition, in which the characters are broken up into their characteristic shape elements, and in which the scanned and electrically stored...
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3639902 |
CHARACTER RECOGNITION USING SHAPE DETECTION
The arrangement according to the disclosure provides, in addition to the actual recognition, that there is detected a distinction in identical zones with respect to similar characters appearing in...
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3634823 |
AN OPTICAL CHARACTER RECOGNITION ARRANGEMENT
Process of optical character recognition for different sizes of character, in which the characters are scanned in columns, stored in a shift register, removed therefrom in rows and the bit...
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3585592 |
CHARACTER RECOGNITION SYSTEM WITH CHARACTER EDGE DETECTION CAPABILITY
A system for recognizing and reproducing a preselected numerical character formed in ink on a transparent background, including: optical conversion of background and ink portions of the character...
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3571796 |
ROTATION TRANSLATION INDEPENDENT FEATURE EXTRACTION MEANS
A means of electrically extracting optical information from an optically recognizable pattern regardless of the orientation of the pattern within the field of view and comparing the information...
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3551887 |
CHARACTER READING APPARATUS
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3408485 |
Apparatus for counting irregularly shaped objects
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3243776 |
Scanning system for registering and reading characters
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3217294 |
Character recognition system
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3160854 |
Lattice-type character recognition system
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3160853 |
Character recognition apparatus
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3102995 |
Character reading system
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2932006 |
Symbol recognition system
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