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Class 382/218 - Comparator


Subclass of Class 382 - Image analysis
Definition: Subject matter wherein standards, held in a storage unit
No. of patents: 810
Last issue date: 05/22/2012


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NumberTitleIssue Date
4611347Video recognition system
An image recognition system uses feature or attribute matching for fast coarse selection of a group of reference images which closely resemble an unknown image and thereafter selects the best reference image match from that group using 2-dimensional inten...
09/09/1986
4606069Apparatus and method for compression of facsimile information by pattern matching
A technique and apparatus for facsimile encoding wherein patterns isolated in each incoming image or picture are compared against stored library patterns, and an identification number associated with a matching pattern and its location in the facsimile ar...
08/12/1986
4581760Fingerprint verification method
An input fingerprint image consists of ones and zeros pixels representing light and dark pixels which in turn correspond to ridge and valley formations. This image is compared with a reference file fingerprint to verify the identity of the input fingerpri...
04/08/1986
4578765Image comparison systems
The invention is for comparing a master image, stored by means of binary signals, with an image under test, which is stored by means of corresponding binary signals. Both sets of binary signals are fed out into an EXCLUSIVE OR gate. This will therefore pr...
03/25/1986
4567609Automatic character recognition system
An apparatus and method for automatic character recognition is presented ch automatically locates and recognizes alphanumeric characters in a scene viewed by a raster-scan type of sensor. By this method the apparatus can search the entire scene and recog...
01/28/1986
4561103Print inspecting method and apparatus
This invention relates to a technique for inspecting picture patterns on prints which are being run in a rotary press or the like, and more particularly to a method in which reference data read out of a reference print is written in a memory, and inspecti...
12/24/1985
4556985Pattern recognition apparatus
A pattern recognition apparatus for identifying characters for example comprises a scanner and data extraction circuit which obtains a rectangular sized M×N bit pattern matrix B(i,j) representing the presence and configuration of an unknown scanned patte...
12/03/1985
4550436Parallel text matching methods and apparatus
Pattern-matching circuitry is shown which permits the simultaneous or near simultaneous matching of entire lines of text to a regular expression test pattern. A synchronous or clocked embodiment is disclosed, as well as an asynchronous embodiment....
10/29/1985
4543660Pattern features extracting apparatus and method
A plurality of different mask pattern data which are indicated by values obtained from Hermitte's polynomials of different degrees weighted by a Gaussian function are stored in mask memories, respectively. Each mask pattern data stored in each of the mask...
09/24/1985
4521909Dual level pattern recognition system
A pattern recognition system has both coarse and fine levels of analysis in which a coarse array representation of a workpiece pattern is formed and used to identify the workpiece pattern as either a referench character or as a member of an ambiguous set ...
06/04/1985
4503557Pattern recognition apparatus and method
The invention is directed to a pattern recognition apparatus and method by which an unknown input pattern is divided into a plurality of sub-area patterns which are matched with a plurality of standard partial characteristic patterns to form an input patt...
03/05/1985
4499595System and method for pattern recognition
A system and method are disclosed for optically reading out one or more discrete line patterns from a pattern-carrying medium under a range of different conditions. The patterns may constitute alphanumeric characters arranged in serial alignment on the me...
02/12/1985
4481665Character segmentation method
This invention relates to a character segmentation method for use with an optical character reader for sequentially reading postal code, state name and city name postal information, and for generating signals which represent character masks of each charac...
11/06/1984
4475237Programmable range recognizer for a logic analyzer
A programmable range recognizer produces a recognition signal whenever a digital word occurs within a specified closed range of digital words. Such a programmable range recognizer is useful for triggering or data qualification in a logic state analyzer. T...
10/02/1984
4475238Magnetoresistive image correlation device
An image correlation device utilizing the principle of magnetoresistance. A sensed image is compared to a preselected mask image to determine whether the two images match. The comparison is accomplished by electrically representing the sensed image along ...
10/02/1984
4468809Multiple font OCR reader
A multiple font optical character recognition reader system for capturing character patterns by pixel, quantizing and sequencing the data representing multiple pixels, enhancing the character patterns represented by the data, locating characters within th...
08/28/1984
4441165Real-time ordinal-value filters utilizing complete intra-data comparisons
Operating at real-time data rates, the disclosed hardware apparatus determine which one of a set of R input data signals is the Mth-largest. Mutual comparisons between the data values themselves provides the basis for the mechanized determination schemes....
04/03/1984
4441205Pattern recognition system
An improved pattern recognition system is disclosed which converts rows and columns of digitized video signal elements indicative of light intensity falling on a camera into integrated signatures, one for each of two orthogonal directions. Signatures corr...
04/03/1984
4439840Real-time ordinal-value filters utilizing partial intra-data comparisons
Operating at real-time data rates, hardware logic networks (FIGS. 3-6) receive onto a data-channel array (390 in FIG. 3) a set of unordered input data values and iteratively pair-wise transpose the set members until their positional order on the array coi...
03/27/1984
4429414Pattern recognition system operating by the multiple similarity method
A plurality of pattern similarity computation circuits are provided, and different sample pattern data and a reference pattern data are coupled to the individual computation circuits, whereby the calculation of the similarity degree of the reference patte...
01/31/1984
4414566Sorting and inspection apparatus and method
Sorting and inspection apparatus and methods which may be used for the identification and separation of articles of different characteristics, or the inspection of articles of similar characteristics to reject those of below minimum standards. A typical s...
11/08/1983
4408342Method for recognizing a machine encoded character
An optical character recognition system and method therefor is disclosed for reading a machine encoded character font, such as the E13B magnetic ink character (MICR) font. The digitized data of an optical scan band of the document to be read is read by an...
10/04/1983
4400828Word recognizer
An input word is recognized as one of a set of reference words. A set of word distance signals representative of the correspondence of the input word to the reference words is generated. A set of weighted word distance signals is also generated. Responsiv...
08/23/1983
4355302Spelled word recognizer
A string of input characters is recognized as one of a plurality of reference sets which are stored in predetermined groups. A set of signals representative of the correspondence of the input characters to the reference characters is generated. The input ...
10/19/1982
4345312Method and device for inspecting the defect of a pattern represented on an article
Herein disclosed is a pattern defect inspecting method which is characterized: in that an image is picked up from an article having a preset pattern thereby to extract the data of the pattern to be inspected while shifting the article with respect to the ...
08/17/1982
4328561Alpha content match prescan method for automatic spelling error correction
A system for reducing the computation required to match a misspelled word against various candidates from a dictionary to find one or more words that represent the best match to the misspelled word. The major facility offered is the ability to computation...
05/04/1982
4327354Learning device for digital signal pattern recognition
A device for recognizing overall patterns of digital signals which are arranged according to at least one coordinate comprises: first storage means for the storage of a pattern to be presented for comparison; a window device for selecting a local pattern ...
04/27/1982
4317109Pattern recognition system for hand-written characters operating on an on-line real-time basis
The present system comprises (a) a character input unit for providing the coordinates of a plurality of points of an input character, (b) a pre-process unit for normalizing the size and the position of said input character, (c) three points approximate un...
02/23/1982
4308523Apparatus and method for character recognition
A practice for storage recognition of unknown document characters contained in a matrix representation of a document region wherein a plurality of arrays of matrix positions incrementally displaced in accordance with a predetermined displacement pattern a...
12/29/1981
4295121Device for optical character reading
A device for optical character reading comprising an optical reading unit, a video detector, a segmenting unit, a video buffer, a recognition unit and a controlling micro computer. The computer controls the setting of the threshold value in the video dete...
10/13/1981
4284975On-line pattern recognition system for hand-written characters
A pattern recognition system operating on an on-line basis for hand-written characters, in particular for hand-written Chinese characters comprises a character input unit for providing the coordinates of a plurality of points on the strokes of a written i...
08/18/1981
4277774Bill discriminating apparatus
There is provided a bill discriminating apparatus which utilizes the presence of a light-emitting substance in a printed zone of the bill when irradiated with ultraviolet rays. The bill discriminating apparatus comprises an ultraviolet ray-emitting member...
07/07/1981
4277775Character recognition system
A character recognition system is disclosed in which feature characteristics of an analog waveform representing an unknown character are applied to a plurality of templates each representing a known character and consisting of a number of windows in which...
07/07/1981
4244029Digital 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 between the two images. Fundamentally, the invention include...
01/06/1981
4230990Broadcast program identification method and system
An automated method and system for identifying broadcast programs wherein a pattern recognition process is combined with a signalling event which acts as a trigger signal. At least one such trigger, or "cue" signal, occurs with each broadcast of every pro...
10/28/1980
4227175Data recognition apparatus
Data recognition apparatus includes a temporary storage to hold three data bits, a readable storage to store eight different sequences which are expected to occur, and a comparison means to find the closest match of the contents of the temporary storage w...
10/07/1980
4200861Pattern recognition apparatus and method
Video informatin obtained in real time is clocked and digitized according to light intensity. Changing light intensities are adaptively determined to vary the threshold level for determining black and white signals. The scene to be used as a reference is ...
04/29/1980
4164728Correlation 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 scene obtained at different times. The formation of line inte...
08/14/1979
4153897Method and device for detecting the similarity between standard and unknown patterns
In a pattern recognition device for recognizing an unknown pattern in accordance with the magnitude of the similarities between the unknown pattern and a plurality of standard patterns, the similarity between the unknown pattern and one of the standard pa...
05/08/1979
4136332Device for detecting displacement between patterns
Disclosed is a device for detecting a displacement between patterns comprising a picking-up device, first and second memory means for storing a first and a second patterns picked up by said picking up device, means for shifting said first and second patte...
01/23/1979
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