CA2194491A1 - Character recognition system identification of scanned and real time handwritten characters - Google Patents
Character recognition system identification of scanned and real time handwritten charactersInfo
- Publication number
- CA2194491A1 CA2194491A1 CA002194491A CA2194491A CA2194491A1 CA 2194491 A1 CA2194491 A1 CA 2194491A1 CA 002194491 A CA002194491 A CA 002194491A CA 2194491 A CA2194491 A CA 2194491A CA 2194491 A1 CA2194491 A1 CA 2194491A1
- Authority
- CA
- Canada
- Prior art keywords
- character
- handwritten characters
- ordered
- array
- processor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- 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
- G06V30/22—Character recognition characterised by the type of writing
- G06V30/226—Character recognition characterised by the type of writing of cursive writing
- G06V30/2268—Character recognition characterised by the type of writing of cursive writing using stroke segmentation
- G06V30/2272—Character recognition characterised by the type of writing of cursive writing using stroke segmentation with lexical matching
-
- 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
Abstract
A handwritten character recognition system that includes a document scanner for generating scanned images of a previously created document containing handwritten characters, and a pen and digitizing tablet for real time entry of handwritten characters by a user. The handwritten character recognition system includes an image processor connected from the document scanner for receiving the scanned image of a previously created document and generating one or more ordered cluster arrays. The ordered cluster arrays contain spatially ordered coordinate arrays of skeletal image ares representing and corresponding to the strokes of the handwritten characters wherein the spatial order represents an induced time ordered sequence of creation of the strokes of the handwritten characters that emulates the sequence of creation of the character strokes. A low level recognition processor is connected from the time order in-duction processor for receiving the ordered cluster arrays and generating a sequential character array wherein the sequential character array contains a character list for each ordered cluster array and wherein each character list contains at least one character identification representing a possible interpretation of the corresponding ordered cluster array. A linguistic post processor may be connected from the low level recognition processor for receiving the sequential character array and generating an output string representing the most probable interpretation of the handwritten characters of the document.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002617416A CA2617416C (en) | 1995-06-07 | 1996-03-27 | Character recognition system identification of scanned and real time handwritten characters |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/484,630 US5970170A (en) | 1995-06-07 | 1995-06-07 | Character recognition system indentification of scanned and real time handwritten characters |
US08/484,630 | 1995-06-07 | ||
PCT/US1996/004151 WO1996041302A1 (en) | 1995-06-07 | 1996-03-27 | Character recognition system identification of scanned and real time handwritten characters |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002617416A Division CA2617416C (en) | 1995-06-07 | 1996-03-27 | Character recognition system identification of scanned and real time handwritten characters |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2194491A1 true CA2194491A1 (en) | 1996-12-19 |
CA2194491C CA2194491C (en) | 2008-06-03 |
Family
ID=23924941
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002653177A Abandoned CA2653177A1 (en) | 1995-06-07 | 1996-03-27 | Character recognition system identification of scanned and real time handwritten characters |
CA002194491A Expired - Fee Related CA2194491C (en) | 1995-06-07 | 1996-03-27 | Character recognition system identification of scanned and real time handwritten characters |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002653177A Abandoned CA2653177A1 (en) | 1995-06-07 | 1996-03-27 | Character recognition system identification of scanned and real time handwritten characters |
Country Status (7)
Country | Link |
---|---|
US (1) | US5970170A (en) |
EP (1) | EP0774142B1 (en) |
JP (3) | JPH10507025A (en) |
AU (1) | AU706080B2 (en) |
CA (2) | CA2653177A1 (en) |
DE (1) | DE69610478T2 (en) |
WO (1) | WO1996041302A1 (en) |
Families Citing this family (52)
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US6275611B1 (en) * | 1996-10-17 | 2001-08-14 | Motorola, Inc. | Handwriting recognition device, method and alphabet, with strokes grouped into stroke sub-structures |
US6675173B1 (en) * | 1998-01-22 | 2004-01-06 | Ori Software Development Ltd. | Database apparatus |
US6898315B2 (en) | 1998-03-23 | 2005-05-24 | Microsoft Corporation | Feature extraction for real-time pattern recognition using single curve per pattern analysis |
KR100454541B1 (en) * | 1998-04-27 | 2004-11-03 | 산요덴키가부시키가이샤 | Method and system of handwritten-character recognition |
JP4338155B2 (en) * | 1998-06-12 | 2009-10-07 | キヤノン株式会社 | Image processing apparatus and method, and computer-readable memory |
US6377710B1 (en) | 1998-11-25 | 2002-04-23 | Xerox Corporation | Method and apparatus for extracting the skeleton of a binary figure by contour-based erosion |
US6411733B1 (en) * | 1998-11-25 | 2002-06-25 | Xerox Corporation | Method and apparatus for separating document image object types |
US6490591B1 (en) * | 2000-03-13 | 2002-12-03 | Cisco Technology, Inc. | Apparatus and method for storing complex structures by conversion of arrays to strings |
TWI238637B (en) * | 2001-01-10 | 2005-08-21 | Ibm | Method and system for processing of documents with electronic signatures |
US6940617B2 (en) * | 2001-02-09 | 2005-09-06 | Matsushita Electric Industrial Co., Ltd. | Printing control interface system and method with handwriting discrimination capability |
US6804677B2 (en) * | 2001-02-26 | 2004-10-12 | Ori Software Development Ltd. | Encoding semi-structured data for efficient search and browsing |
US6782144B2 (en) | 2001-03-12 | 2004-08-24 | Multiscan Corp. | Document scanner, system and method |
US6677929B2 (en) | 2001-03-21 | 2004-01-13 | Agilent Technologies, Inc. | Optical pseudo trackball controls the operation of an appliance or machine |
US7287033B2 (en) | 2002-03-06 | 2007-10-23 | Ori Software Development, Ltd. | Efficient traversals over hierarchical data and indexing semistructured data |
SE0202446D0 (en) * | 2002-08-16 | 2002-08-16 | Decuma Ab Ideon Res Park | Presenting recognized handwritten symbols |
WO2004019187A2 (en) * | 2002-08-26 | 2004-03-04 | Siftology, Inc. | Relating media to information in a workflow system |
US7227995B1 (en) | 2003-04-18 | 2007-06-05 | Kamran Reihani | System and method for automated symbolic recognition including spatial reasoning |
US7242805B1 (en) | 2003-04-18 | 2007-07-10 | Kamran Reihani | System and method for automated symbolic recognition including database modeling |
US7218782B1 (en) | 2003-04-18 | 2007-05-15 | Kamran Reihani | System and method for automated symbolic recognition including multi-phase symbolic reshaping |
US7239749B1 (en) | 2003-04-18 | 2007-07-03 | Kamran Reihani | System and method for automated symbolic recognition including evidence-based technique |
US7236631B1 (en) | 2003-04-18 | 2007-06-26 | Kamran Reihani | System and method for automated symbolic recognition including logical symbols |
US7668407B1 (en) * | 2004-05-28 | 2010-02-23 | Affiliated Computer Services, Inc. | Contextual resolution of character assignments |
CN100343864C (en) * | 2004-07-22 | 2007-10-17 | 摩托罗拉公司 | Hand writing identification method and system using background picture element |
US7606421B2 (en) * | 2004-12-08 | 2009-10-20 | Ctb/Mcgraw-Hill Llc | Data extraction from temporal image data |
NO20051412D0 (en) * | 2005-03-17 | 2005-03-17 | Lumex As | Method and system for adaptive recognition of degraded text in computer images |
WO2007082187A2 (en) * | 2006-01-11 | 2007-07-19 | Gannon Technologies Group, Llc | Pictographic recognition technology applied to distinctive characteristics of handwritten arabic text |
US7786979B2 (en) | 2006-01-13 | 2010-08-31 | Research In Motion Limited | Handheld electronic device and method for disambiguation of text input and providing spelling substitution |
US7650035B2 (en) * | 2006-09-11 | 2010-01-19 | Google Inc. | Optical character recognition based on shape clustering and multiple optical character recognition processes |
US7697758B2 (en) * | 2006-09-11 | 2010-04-13 | Google Inc. | Shape clustering and cluster-level manual identification in post optical character recognition processing |
US7646921B2 (en) * | 2006-09-11 | 2010-01-12 | Google Inc. | High resolution replication of document based on shape clustering |
WO2008031063A1 (en) * | 2006-09-08 | 2008-03-13 | Google Inc. | Shape clustering in post optical character recognition processing |
US8175394B2 (en) | 2006-09-08 | 2012-05-08 | Google Inc. | Shape clustering in post optical character recognition processing |
JP5303865B2 (en) * | 2007-05-23 | 2013-10-02 | 株式会社リコー | Information processing apparatus and information processing method |
US9305235B1 (en) * | 2007-12-21 | 2016-04-05 | Cognex Corporation | System and method for identifying and locating instances of a shape under large variations in linear degrees of freedom and/or stroke widths |
US8184909B2 (en) * | 2008-06-25 | 2012-05-22 | United Technologies Corporation | Method for comparing sectioned geometric data representations for selected objects |
US8079524B2 (en) * | 2009-11-30 | 2011-12-20 | Symbol Technologies, Inc. | Imaging-based scanner including border searching for image acquisition |
US8363947B2 (en) | 2010-07-31 | 2013-01-29 | International Business Machines Corporation | Handwritten character recognition based on frequency variations in characters |
JP5701839B2 (en) * | 2012-10-26 | 2015-04-15 | 株式会社東芝 | Electronic apparatus and method |
US9171204B2 (en) | 2012-12-12 | 2015-10-27 | Qualcomm Incorporated | Method of perspective correction for devanagari text |
JP6099448B2 (en) * | 2013-03-22 | 2017-03-22 | 任天堂株式会社 | Image processing program, information processing apparatus, information processing system, and image processing method |
US9305245B2 (en) * | 2013-05-07 | 2016-04-05 | Xerox Corporation | Methods and systems for evaluating handwritten documents |
US9377948B2 (en) * | 2013-07-01 | 2016-06-28 | Lenovo (Singapore) Pte. Ltd. | Special input for general character inquiries for input to information handling device |
US20150371100A1 (en) * | 2014-06-23 | 2015-12-24 | Xerox Corporation | Character recognition method and system using digit segmentation and recombination |
US10013603B2 (en) * | 2016-01-20 | 2018-07-03 | Myscript | System and method for recognizing multiple object structure |
US10049289B2 (en) | 2016-02-12 | 2018-08-14 | Wacom Co., Ltd. | Method and system for generating and selectively outputting two types of ink vector data |
US9792517B2 (en) * | 2016-02-12 | 2017-10-17 | Wacom Co., Ltd. | Method and system for generating and selectively outputting two types of ink vector data |
US9594740B1 (en) * | 2016-06-21 | 2017-03-14 | International Business Machines Corporation | Forms processing system |
US10579893B2 (en) | 2017-02-28 | 2020-03-03 | Konica Minolta Laboratory U.S.A., Inc. | Inferring stroke information from an image |
US10163004B2 (en) * | 2017-03-30 | 2018-12-25 | Konica Minolta Laboratory U.S.A., Inc. | Inferring stroke information from an image |
TWI676919B (en) * | 2018-08-02 | 2019-11-11 | 義守大學 | Computerized writing evaluation and training method |
US11514695B2 (en) * | 2020-12-10 | 2022-11-29 | Microsoft Technology Licensing, Llc | Parsing an ink document using object-level and stroke-level processing |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5998283A (en) * | 1982-11-27 | 1984-06-06 | Hitachi Ltd | Pattern segmenting and recognizing system |
US5164996A (en) * | 1986-04-07 | 1992-11-17 | Jose Pastor | Optical character recognition by detecting geo features |
US5034989A (en) * | 1987-12-11 | 1991-07-23 | Loh Shiu Chang | On-line handwritten character recognition apparatus with non-ambiguity algorithm |
JP3159745B2 (en) * | 1991-10-25 | 2001-04-23 | キヤノン株式会社 | Character recognition method and apparatus |
US5521985A (en) * | 1992-08-13 | 1996-05-28 | International Business Machines Corporation | Apparatus for recognizing machine generated or handprinted text |
JPH06215184A (en) * | 1992-09-17 | 1994-08-05 | Fuji Facom Corp | Labeling device for extracted area |
US5491758A (en) * | 1993-01-27 | 1996-02-13 | International Business Machines Corporation | Automatic handwriting recognition using both static and dynamic parameters |
US5454046A (en) * | 1993-09-17 | 1995-09-26 | Penkey Corporation | Universal symbolic handwriting recognition system |
US5465309A (en) * | 1993-12-10 | 1995-11-07 | International Business Machines Corporation | Method of and apparatus for character recognition through related spelling heuristics |
-
1995
- 1995-06-07 US US08/484,630 patent/US5970170A/en not_active Expired - Lifetime
-
1996
- 1996-03-27 DE DE69610478T patent/DE69610478T2/en not_active Expired - Fee Related
- 1996-03-27 WO PCT/US1996/004151 patent/WO1996041302A1/en active IP Right Grant
- 1996-03-27 JP JP9500450A patent/JPH10507025A/en active Pending
- 1996-03-27 AU AU53740/96A patent/AU706080B2/en not_active Ceased
- 1996-03-27 EP EP96910585A patent/EP0774142B1/en not_active Expired - Lifetime
- 1996-03-27 CA CA002653177A patent/CA2653177A1/en not_active Abandoned
- 1996-03-27 CA CA002194491A patent/CA2194491C/en not_active Expired - Fee Related
-
2006
- 2006-08-16 JP JP2006221839A patent/JP4350109B2/en not_active Expired - Fee Related
-
2009
- 2009-06-02 JP JP2009132886A patent/JP2009193603A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH10507025A (en) | 1998-07-07 |
DE69610478T2 (en) | 2001-05-10 |
JP2009193603A (en) | 2009-08-27 |
CA2194491C (en) | 2008-06-03 |
AU5374096A (en) | 1996-12-30 |
WO1996041302A1 (en) | 1996-12-19 |
DE69610478D1 (en) | 2000-11-02 |
JP4350109B2 (en) | 2009-10-21 |
EP0774142A1 (en) | 1997-05-21 |
US5970170A (en) | 1999-10-19 |
AU706080B2 (en) | 1999-06-10 |
CA2653177A1 (en) | 1996-12-19 |
JP2006338687A (en) | 2006-12-14 |
EP0774142B1 (en) | 2000-09-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |