CA2463230A1 - A method and apparatus for decoding handwritten characters - Google Patents
A method and apparatus for decoding handwritten characters Download PDFInfo
- Publication number
- CA2463230A1 CA2463230A1 CA002463230A CA2463230A CA2463230A1 CA 2463230 A1 CA2463230 A1 CA 2463230A1 CA 002463230 A CA002463230 A CA 002463230A CA 2463230 A CA2463230 A CA 2463230A CA 2463230 A1 CA2463230 A1 CA 2463230A1
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- CA
- Canada
- Prior art keywords
- character
- model
- models
- comparing
- series
- 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.)
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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
- G06V30/14—Image acquisition
- G06V30/142—Image acquisition using hand-held instruments; Constructional details of the instruments
- G06V30/1423—Image acquisition using hand-held instruments; Constructional details of the instruments the instrument generating sequences of position coordinates corresponding to handwriting
-
- 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
- G06V30/24—Character recognition characterised by the processing or recognition method
- G06V30/242—Division of the character sequences into groups prior to recognition; Selection of dictionaries
- G06V30/244—Division of the character sequences into groups prior to recognition; Selection of dictionaries using graphical properties, e.g. alphabet type or font
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/70—Arrangements for image or video recognition or understanding using pattern recognition or machine learning
- G06V10/74—Image or video pattern matching; Proximity measures in feature spaces
- G06V10/75—Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video features; Coarse-fine approaches, e.g. multi-scale approaches; using context analysis; Selection of dictionaries
Landscapes
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Evolutionary Computation (AREA)
- Software Systems (AREA)
- Computing Systems (AREA)
- Databases & Information Systems (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Artificial Intelligence (AREA)
- Character Discrimination (AREA)
- Facsimile Image Signal Circuits (AREA)
- Vending Machines For Individual Products (AREA)
- Character Input (AREA)
- Input From Keyboards Or The Like (AREA)
- Electronic Switches (AREA)
Abstract
Disclosed is a method of performing written character recognition, including sequentially comparing a given input character with one of a series of stored character models. The step of comparing further includes the steps of:
decomposing the given input character into one or more segments in accordance with a segmentation scheme associated with the present character model;
evaluating the segment or segments against a segment model associated with the present character model, such that the evaluation produces a score which measures the degree of conformity with the model; repeating said step of comparing for a plurality of character models in the series of character models; and selecting the character model which is assigned the highest score and classifying the input character as the character associated with that character model.
decomposing the given input character into one or more segments in accordance with a segmentation scheme associated with the present character model;
evaluating the segment or segments against a segment model associated with the present character model, such that the evaluation produces a score which measures the degree of conformity with the model; repeating said step of comparing for a plurality of character models in the series of character models; and selecting the character model which is assigned the highest score and classifying the input character as the character associated with that character model.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPR8245A AUPR824501A0 (en) | 2001-10-15 | 2001-10-15 | Methods and systems (npw003) |
AUPR8245 | 2001-10-15 | ||
PCT/AU2002/001393 WO2003034325A1 (en) | 2001-10-15 | 2002-10-15 | A method and apparatus for decoding handwritten characters |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2463230A1 true CA2463230A1 (en) | 2003-04-24 |
CA2463230C CA2463230C (en) | 2009-07-28 |
Family
ID=3832070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002463230A Expired - Fee Related CA2463230C (en) | 2001-10-15 | 2002-10-15 | A method and apparatus for decoding handwritten characters |
Country Status (12)
Country | Link |
---|---|
US (6) | US7359551B2 (en) |
EP (1) | EP1444642B1 (en) |
JP (1) | JP4274941B2 (en) |
KR (1) | KR100651762B1 (en) |
CN (1) | CN100533470C (en) |
AT (1) | ATE386989T1 (en) |
AU (3) | AUPR824501A0 (en) |
CA (1) | CA2463230C (en) |
DE (1) | DE60225170T2 (en) |
IL (1) | IL161383A0 (en) |
WO (1) | WO2003034325A1 (en) |
ZA (1) | ZA200402925B (en) |
Cited By (2)
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US9286527B2 (en) | 2014-02-20 | 2016-03-15 | Google Inc. | Segmentation of an input by cut point classification |
CN113407100A (en) * | 2015-08-26 | 2021-09-17 | 谷歌有限责任公司 | Time-based word segmentation |
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US20030202097A1 (en) | 2000-10-26 | 2003-10-30 | Autoliv Development Ab | Night vision arrangement |
AUPR824501A0 (en) * | 2001-10-15 | 2001-11-08 | Silverbrook Research Pty. Ltd. | Methods and systems (npw003) |
US7995095B2 (en) | 2001-10-18 | 2011-08-09 | Autoliv Development Ab | Night vision device for a vehicle |
US20050281467A1 (en) * | 2003-01-24 | 2005-12-22 | Stahovich Thomas F | Recognizing multi-stroke symbols |
AU2003900865A0 (en) * | 2003-02-26 | 2003-03-13 | Silverbrook Research Pty Ltd | Methods, systems and apparatus (NPW010) |
CN100405389C (en) * | 2004-08-06 | 2008-07-23 | 摩托罗拉公司 | Identifying character from stroke mark |
US20090300554A1 (en) * | 2008-06-03 | 2009-12-03 | Nokia Corporation | Gesture Recognition for Display Zoom Feature |
KR101080255B1 (en) | 2009-07-21 | 2011-11-08 | (주)펜앤프리 | Apparatus and method for inputting handwriting in accordance with the handwriting pattern |
CN101916378B (en) * | 2010-07-20 | 2013-01-09 | 青岛海信网络科技股份有限公司 | Method and device for recognizing confusable character |
US8363947B2 (en) | 2010-07-31 | 2013-01-29 | International Business Machines Corporation | Handwritten character recognition based on frequency variations in characters |
US8768062B2 (en) * | 2010-11-09 | 2014-07-01 | Tata Consulting Services Limited | Online script independent recognition of handwritten sub-word units and words |
US20120281919A1 (en) * | 2011-05-06 | 2012-11-08 | King Abdul Aziz City For Science And Technology | Method and system for text segmentation |
CN102968265B (en) * | 2011-09-01 | 2015-12-16 | 晨星软件研发(深圳)有限公司 | Touch point is converted to method and the contactor control device of input characters |
US11195057B2 (en) | 2014-03-18 | 2021-12-07 | Z Advanced Computing, Inc. | System and method for extremely efficient image and pattern recognition and artificial intelligence platform |
US9916538B2 (en) | 2012-09-15 | 2018-03-13 | Z Advanced Computing, Inc. | Method and system for feature detection |
US11074495B2 (en) | 2013-02-28 | 2021-07-27 | Z Advanced Computing, Inc. (Zac) | System and method for extremely efficient image and pattern recognition and artificial intelligence platform |
US8311973B1 (en) | 2011-09-24 | 2012-11-13 | Zadeh Lotfi A | Methods and systems for applications for Z-numbers |
US11914674B2 (en) | 2011-09-24 | 2024-02-27 | Z Advanced Computing, Inc. | System and method for extremely efficient image and pattern recognition and artificial intelligence platform |
US8873813B2 (en) | 2012-09-17 | 2014-10-28 | Z Advanced Computing, Inc. | Application of Z-webs and Z-factors to analytics, search engine, learning, recognition, natural language, and other utilities |
US9569439B2 (en) | 2011-10-31 | 2017-02-14 | Elwha Llc | Context-sensitive query enrichment |
US9082005B2 (en) * | 2012-03-19 | 2015-07-14 | Disney Enterprises, Inc. | Smart scribbles for sketch segmentation |
JP5284523B1 (en) * | 2012-09-05 | 2013-09-11 | 株式会社東芝 | Information processing system, program, and processing method of information processing system |
US9330331B2 (en) | 2013-11-11 | 2016-05-03 | Wipro Limited | Systems and methods for offline character recognition |
US9524440B2 (en) | 2014-04-04 | 2016-12-20 | Myscript | System and method for superimposed handwriting recognition technology |
US9384403B2 (en) | 2014-04-04 | 2016-07-05 | Myscript | System and method for superimposed handwriting recognition technology |
US20160154555A1 (en) * | 2014-12-02 | 2016-06-02 | Lenovo (Singapore) Pte. Ltd. | Initiating application and performing function based on input |
CN104537347A (en) * | 2014-12-25 | 2015-04-22 | 安徽寰智信息科技股份有限公司 | Lip shape recognition character input method based on cloud analysis and model match |
CN105512692B (en) * | 2015-11-30 | 2019-04-09 | 华南理工大学 | Hand script Chinese input equipment mathematical formulae Symbol Recognition based on BLSTM |
US10163004B2 (en) * | 2017-03-30 | 2018-12-25 | Konica Minolta Laboratory U.S.A., Inc. | Inferring stroke information from an image |
US10748031B1 (en) | 2019-05-22 | 2020-08-18 | Read-Ink Corporation | Handwriting recognition systems and methods |
CN110503101A (en) * | 2019-08-23 | 2019-11-26 | 北大方正集团有限公司 | Font evaluation method, device, equipment and computer readable storage medium |
CN110866499B (en) * | 2019-11-15 | 2022-12-13 | 爱驰汽车有限公司 | Handwritten text recognition method, system, device and medium |
KR102581822B1 (en) * | 2023-04-18 | 2023-09-26 | (주)핸듀 | Method and apparatus for recognizing characters in educational programs |
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-
2001
- 2001-10-15 AU AUPR8245A patent/AUPR824501A0/en not_active Abandoned
-
2002
- 2002-10-15 US US10/492,168 patent/US7359551B2/en not_active Expired - Fee Related
- 2002-10-15 DE DE60225170T patent/DE60225170T2/en not_active Expired - Lifetime
- 2002-10-15 KR KR1020047005558A patent/KR100651762B1/en not_active IP Right Cessation
- 2002-10-15 JP JP2003536980A patent/JP4274941B2/en not_active Expired - Fee Related
- 2002-10-15 EP EP02801225A patent/EP1444642B1/en not_active Expired - Lifetime
- 2002-10-15 IL IL16138302A patent/IL161383A0/en not_active IP Right Cessation
- 2002-10-15 AU AU2002333064A patent/AU2002333064B2/en not_active Ceased
- 2002-10-15 CA CA002463230A patent/CA2463230C/en not_active Expired - Fee Related
- 2002-10-15 WO PCT/AU2002/001393 patent/WO2003034325A1/en active IP Right Grant
- 2002-10-15 CN CNB028204743A patent/CN100533470C/en not_active Expired - Fee Related
- 2002-10-15 AT AT02801225T patent/ATE386989T1/en not_active IP Right Cessation
-
2004
- 2004-04-19 ZA ZA200402925A patent/ZA200402925B/en unknown
-
2006
- 2006-10-04 AU AU2006225217A patent/AU2006225217B2/en not_active Ceased
-
2008
- 2008-02-14 US US12/031,615 patent/US7697761B2/en not_active Expired - Fee Related
-
2010
- 2010-03-30 US US12/750,587 patent/US7848574B2/en not_active Expired - Fee Related
- 2010-11-08 US US12/941,807 patent/US8009914B2/en not_active Expired - Fee Related
-
2011
- 2011-08-07 US US13/204,703 patent/US8280168B2/en not_active Expired - Fee Related
-
2012
- 2012-09-09 US US13/607,768 patent/US20120328195A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9286527B2 (en) | 2014-02-20 | 2016-03-15 | Google Inc. | Segmentation of an input by cut point classification |
CN113407100A (en) * | 2015-08-26 | 2021-09-17 | 谷歌有限责任公司 | Time-based word segmentation |
CN113407100B (en) * | 2015-08-26 | 2024-03-29 | 谷歌有限责任公司 | Time-based word segmentation |
Also Published As
Publication number | Publication date |
---|---|
JP2005505868A (en) | 2005-02-24 |
DE60225170D1 (en) | 2008-04-03 |
US7848574B2 (en) | 2010-12-07 |
AU2002333064B2 (en) | 2006-07-20 |
WO2003034325A1 (en) | 2003-04-24 |
EP1444642B1 (en) | 2008-02-20 |
EP1444642A1 (en) | 2004-08-11 |
AU2006225217A1 (en) | 2006-10-26 |
US8009914B2 (en) | 2011-08-30 |
KR100651762B1 (en) | 2006-12-01 |
KR20050036864A (en) | 2005-04-20 |
AU2006225217B2 (en) | 2008-02-28 |
US20080144938A1 (en) | 2008-06-19 |
CA2463230C (en) | 2009-07-28 |
US7359551B2 (en) | 2008-04-15 |
CN100533470C (en) | 2009-08-26 |
US8280168B2 (en) | 2012-10-02 |
AUPR824501A0 (en) | 2001-11-08 |
US7697761B2 (en) | 2010-04-13 |
IL161383A0 (en) | 2004-09-27 |
JP4274941B2 (en) | 2009-06-10 |
US20110293181A1 (en) | 2011-12-01 |
US20120328195A1 (en) | 2012-12-27 |
US20100189352A1 (en) | 2010-07-29 |
ATE386989T1 (en) | 2008-03-15 |
EP1444642A4 (en) | 2006-07-26 |
US20110052066A1 (en) | 2011-03-03 |
US20050175241A1 (en) | 2005-08-11 |
CN1571979A (en) | 2005-01-26 |
DE60225170T2 (en) | 2009-03-05 |
ZA200402925B (en) | 2005-02-23 |
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Legal Events
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EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20131015 |