IL84650A0 - System for extracting features of a character - Google Patents

System for extracting features of a character

Info

Publication number
IL84650A0
IL84650A0 IL84650A IL8465087A IL84650A0 IL 84650 A0 IL84650 A0 IL 84650A0 IL 84650 A IL84650 A IL 84650A IL 8465087 A IL8465087 A IL 8465087A IL 84650 A0 IL84650 A0 IL 84650A0
Authority
IL
Israel
Prior art keywords
character
extracting features
extracting
features
Prior art date
Application number
IL84650A
Other languages
English (en)
Original Assignee
Gtx Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gtx Corp filed Critical Gtx Corp
Publication of IL84650A0 publication Critical patent/IL84650A0/xx

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/46—Descriptors for shape, contour or point-related descriptors, e.g. scale invariant feature transform [SIFT] or bags of words [BoW]; Salient regional features
    • G06V10/478—Contour-based spectral representations or scale-space representations, e.g. by Fourier analysis, wavelet analysis or curvature scale-space [CSS]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/18086—Extraction of features or characteristics of the image by performing operations within image blocks or by using histograms
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/182—Extraction of features or characteristics of the image by coding the contour of the pattern
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition
    • G06V30/18—Extraction of features or characteristics of the image
    • G06V30/186—Extraction of features or characteristics of the image by deriving mathematical or geometrical properties from the whole image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
    • G06V30/10—Character recognition

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Mathematical Physics (AREA)
  • Mathematical Analysis (AREA)
  • Pure & Applied Mathematics (AREA)
  • Mathematical Optimization (AREA)
  • Algebra (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Character Discrimination (AREA)
  • Character Input (AREA)
  • Image Analysis (AREA)
IL84650A 1987-03-13 1987-11-27 System for extracting features of a character IL84650A0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/026,672 US4802230A (en) 1987-03-13 1987-03-13 Method and apparatus for generating size and orientation invariant shape features

Publications (1)

Publication Number Publication Date
IL84650A0 true IL84650A0 (en) 1988-04-29

Family

ID=21833187

Family Applications (1)

Application Number Title Priority Date Filing Date
IL84650A IL84650A0 (en) 1987-03-13 1987-11-27 System for extracting features of a character

Country Status (5)

Country Link
US (1) US4802230A (ja)
EP (1) EP0281725A3 (ja)
JP (1) JP2930300B2 (ja)
AU (1) AU590470B2 (ja)
IL (1) IL84650A0 (ja)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817187A (en) * 1987-02-19 1989-03-28 Gtx Corporation Apparatus and method for vectorization of incoming scanned image data
US5131053A (en) * 1988-08-10 1992-07-14 Caere Corporation Optical character recognition method and apparatus
US5054094A (en) * 1990-05-07 1991-10-01 Eastman Kodak Company Rotationally impervious feature extraction for optical character recognition
US5305395A (en) * 1990-06-08 1994-04-19 Xerox Corporation Exhaustive hierarchical near neighbor operations on an image
US5253307A (en) * 1991-07-30 1993-10-12 Xerox Corporation Image analysis to obtain typeface information
JP3361124B2 (ja) * 1991-07-30 2003-01-07 ゼロックス・コーポレーション テキストを含む２次元画像上での画像処理方法と画像処理装置
US6373997B1 (en) 1991-07-30 2002-04-16 Xerox Corporation Coarse and fine skew measurement
US5245674A (en) * 1991-07-30 1993-09-14 Xerox Corporation Image processing using distance as a function of direction
US5251268A (en) * 1991-08-09 1993-10-05 Electric Power Research Institute, Inc. Integrated method and apparatus for character and symbol recognition
US6850252B1 (en) * 1999-10-05 2005-02-01 Steven M. Hoffberg Intelligent electronic appliance system and method
US10361802B1 (en) 1999-02-01 2019-07-23 Blanding Hovenweep, Llc Adaptive pattern recognition based control system and method
US5903454A (en) 1991-12-23 1999-05-11 Hoffberg; Linda Irene Human-factored interface corporating adaptive pattern recognition based controller apparatus
US6400996B1 (en) 1999-02-01 2002-06-04 Steven M. Hoffberg Adaptive pattern recognition based control system and method
US8352400B2 (en) 1991-12-23 2013-01-08 Hoffberg Steven M Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore
US7242988B1 (en) 1991-12-23 2007-07-10 Linda Irene Hoffberg Adaptive pattern recognition based controller apparatus and method and human-factored interface therefore
US6418424B1 (en) 1991-12-23 2002-07-09 Steven M. Hoffberg Ergonomic man-machine interface incorporating adaptive pattern recognition based control system
FR2685795B1 (fr) * 1991-12-26 1994-02-25 Thomson Csf Procede de segmentation polytomique.
US5444797A (en) * 1993-04-19 1995-08-22 Xerox Corporation Method and apparatus for automatic character script determination
US5604822A (en) * 1993-11-12 1997-02-18 Martin Marietta Corporation Methods and apparatus for centroid based object segmentation in object recognition-type image processing system
EP0657839B1 (en) * 1993-12-10 2002-02-20 Ricoh Company, Ltd Methodsand apparatus for recognizing a specific image from an imput image signal
US6002807A (en) * 1996-01-11 1999-12-14 Northrop Grumman Corporation Rotationally invariant correlator
US6130959A (en) * 1997-07-16 2000-10-10 Cognex Corporation Analyzing an image of an arrangement of discrete objects
US6636631B2 (en) * 1998-06-04 2003-10-21 Matsushita Electric Industrial Co., Ltd. Optical character reading method and system for a document with ruled lines and its application
US6229918B1 (en) * 1998-10-20 2001-05-08 Microsoft Corporation System and method for automatically detecting clusters of data points within a data space
US7904187B2 (en) 1999-02-01 2011-03-08 Hoffberg Steven M Internet appliance system and method
GB2393839B (en) * 1999-07-05 2004-06-16 Mitsubishi Electric Inf Tech Method and apparatus for representing and searching for an object in an image
US6577758B1 (en) * 1999-09-24 2003-06-10 Cognex Technology And Investment Corporation Image position detection technique in which input parameters can be easily determined
EP1779295A4 (en) * 2004-07-26 2012-07-04 Automotive Systems Lab SYSTEM FOR PROTECTING USERS OF THE ROAD IN A DANGER SITUATION
US7623734B2 (en) * 2004-09-30 2009-11-24 Microsoft Corporation Method and system for automatically inscribing noisy objects in scanned image data within a minimum area rectangle
US8768007B2 (en) 2012-03-26 2014-07-01 Tk Holdings Inc. Method of filtering an image
US8824733B2 (en) 2012-03-26 2014-09-02 Tk Holdings Inc. Range-cued object segmentation system and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3925760A (en) * 1971-05-06 1975-12-09 Ecrm Method of and apparatus for optical character recognition, reading and reproduction
JPS604505B2 (ja) * 1972-07-10 1985-02-04 スキヤン − オプテイクス インコ−ポレ−テツド マルチ・フオント光学式文字認識装置
GB1537322A (en) * 1975-01-30 1978-12-29 Agency Ind Science Techn Apparatus for recognition of approximate shape of an article
US4105998A (en) * 1976-03-30 1978-08-08 Fujitsu Limited Pattern recognition processing system
AU523135B2 (en) * 1979-04-05 1982-07-15 Environmental Research Institute Of Michigan, The Automatic image processor
DE3234608A1 (de) * 1982-09-16 1984-03-22 Kraft, Hans Rainer, Dr.-Ing., 1000 Berlin Verfahren und schaltungsanordnung zur erzeugung einer lageunabhaengigen objektsignatur
DE3419140A1 (de) * 1984-05-23 1985-11-28 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zur omnidirektionalen merkmalserkennung in einem sensorsehfeld

Also Published As

Publication number Publication date
JPS63237183A (ja) 1988-10-03
AU590470B2 (en) 1989-11-02
AU1176188A (en) 1988-09-29
EP0281725A2 (en) 1988-09-14
US4802230A (en) 1989-01-31
JP2930300B2 (ja) 1999-08-03
EP0281725A3 (en) 1991-01-23

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