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Lord Kelvin, British mathematician and physicist ; 1897
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| Number | Title | Issue Date |
| 7295694 | MICR-based optical character recognition system and method A character recognition system and method. The system comprises an (OCR) optical character reader system for collecting character data by electro-optically scanning printed characters; a conversion system for converting the character data to a Magnetic Ink Character... | 11/13/2007 |
| 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, which remains after the other sub-pictures are removed from the pictu... | 04/17/2007 |
| 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 compressing an animation path, has an interpolator analysis unit for extracting... | 02/28/2006 |
| 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 sensor (17) consisting of a two-dimensional matrix of photoelect... | 02/10/2004 |
| 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 plurality of input resolutions can be converted to a common ou... | 01/19/1999 |
| 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 optical scanning. A character is represented by a pseudo two... | 07/28/1998 |
| 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 the body is converted into a contour function which is in... | 06/30/1998 |
| 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 recognized. The data contains an inverse matrix of a correlation mat... | 11/04/1997 |
| 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 recognize non-keywords. Font-independent character models ... | 08/01/1995 |
| 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 sampled locations and combining the results to obtain a m... | 05/16/1995 |
| 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 the ambiquities or "errors" that are encountered during th... | 02/25/1992 |
| 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 divided regions, where each check width is greater than or e... | 10/29/1991 |
| 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 illumination with non-laser light. A database, organized into frames ... | 05/21/1991 |
| 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 left and right side frame recognition circuits. A final cha... | 11/08/1988 |
| 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 plurality of templates, each representing a known characte... | 12/25/1984 |
| 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 digitized by an optical scanner. In accordance with this ... | 08/28/1984 |
| 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 cylindrical rotary unit a photoelectric sensor is provided by which ... | 09/13/1983 |
| 4355301 | Optical character reading system An optical character reading system in which each character pattern is electronically scanned several times while a manually held scanner is moved over the character pattern. The recognition results from each scan are subjected to a selection process and ... | 10/19/1982 |
| 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 segments is read out via a line of photoelectric cells. Two piec... | 03/11/1980 |
| 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 each line or column according to its pattern. The sequence in... | 12/25/1979 |
| 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 hand-held wand which is manually moved over the printed char... | 12/25/1979 |
| 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 through an initial feature extraction process, unification p... | 07/31/1979 |
| 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 the starting and ending positions of the respective scan l... | 05/15/1979 |
| 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 information-containing field across a sensor array. A two-dimensional array o... | 02/21/1978 |
| 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 (i.e. disconnected character segments), overhangs and underhan... | 01/03/1978 |
| 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 unit which converts said character video signals into binar... | 12/06/1977 |
| 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 in plural fonts of unknown order. More particularly, a ch... | 09/13/1977 |
| 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 peripheral pattern detector recognizes in turn the character patt... | 07/20/1976 |