NO955064L - Procedure for recognizing handwriting - Google Patents

Procedure for recognizing handwriting

Info

Publication number
NO955064L
NO955064L NO955064A NO955064A NO955064L NO 955064 L NO955064 L NO 955064L NO 955064 A NO955064 A NO 955064A NO 955064 A NO955064 A NO 955064A NO 955064 L NO955064 L NO 955064L
Authority
NO
Norway
Prior art keywords
curvature
points
procedure
derivative
boundary
Prior art date
Application number
NO955064A
Other languages
Norwegian (no)
Other versions
NO955064D0 (en
Inventor
Chris Kortage
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of NO955064L publication Critical patent/NO955064L/en
Publication of NO955064D0 publication Critical patent/NO955064D0/en

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
    • G06V30/32—Digital ink
    • G06V30/333—Preprocessing; Feature extraction
    • G06V30/347—Sampling; Contour coding; Stroke extraction

Abstract

Det er beskrevet en framgangsmåte som inkluderer trinn med å beregne (140) den deri- verte, eller øyeblikkelig endringsgrad, av kurvaturen ved punkter i håndskrevne inndata (l 10). Framgangsmåten vil så velge (150) som strøkgrensepunkt spesielle punkter (eller pixler) som ligger ved et midtpunkt mellom et punkt av hcry kurvaturderivert og lav kurvaturderivert. Slike grensepunkter blir ikke påvirket av absolutte kurvaturverdier, men snarere bare av relative endringer i kurvaturen. Grensepunktene for stroksegmenteringen framskaffes ved en strøkbasert gjenkjenner for tolkning av de håndskrevne inndata.A method is described which includes the steps of calculating (140) the derivative, or instantaneous degree of change, of the curvature at points in handwritten input (110). The method will then select (150) as the stroke boundary point specific points (or pixels) located at a midpoint between a point of hcry curvature-derived and low curvature-derivative. Such boundary points are not influenced by absolute curvature values, but rather only by relative changes in the curvature. The boundary points for the strip segmentation are obtained by a stroke-based recognizer for interpreting the handwritten input.

NO955064A 1994-05-10 1995-12-14 Procedure for recognizing handwriting NO955064D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24040794A 1994-05-10 1994-05-10
PCT/US1995/005409 WO1995032485A1 (en) 1994-05-10 1995-05-03 Method of stroke segmentation for handwritten input

Publications (2)

Publication Number Publication Date
NO955064L true NO955064L (en) 1995-12-14
NO955064D0 NO955064D0 (en) 1995-12-14

Family

ID=22906392

Family Applications (1)

Application Number Title Priority Date Filing Date
NO955064A NO955064D0 (en) 1994-05-10 1995-12-14 Procedure for recognizing handwriting

Country Status (14)

Country Link
EP (1) EP0710384A4 (en)
JP (1) JP2002515144A (en)
CN (1) CN1128074A (en)
AU (1) AU2431695A (en)
BR (1) BR9506197A (en)
CA (1) CA2162489A1 (en)
CZ (1) CZ6196A3 (en)
FI (1) FI960110A (en)
HU (1) HUT75820A (en)
IL (1) IL113659A0 (en)
NO (1) NO955064D0 (en)
PL (1) PL312469A1 (en)
SK (1) SK3096A3 (en)
WO (1) WO1995032485A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9701793D0 (en) 1997-01-29 1997-03-19 Gay Geoffrey N W Means for inputting characters or commands into a computer
US6563515B1 (en) 1998-05-19 2003-05-13 United Video Properties, Inc. Program guide system with video window browsing
US7603684B1 (en) 1998-05-19 2009-10-13 United Video Properties, Inc. Program guide system with video-on-demand browsing
CN1317664C (en) * 2004-01-17 2007-05-23 中国科学院计算技术研究所 Confused stroke order library establishing method and on-line hand-writing Chinese character identifying and evaluating system
EP1562138B1 (en) * 2004-02-06 2009-08-19 Dassault Systèmes A process for drafting a curve in a computer-aided design system
EP1562130A1 (en) * 2004-02-06 2005-08-10 Dassault Systèmes A process for modifying a curve in a computer-aided design system
CN100405389C (en) * 2004-08-06 2008-07-23 摩托罗拉公司 Identifying character from stroke mark
JP2006162692A (en) * 2004-12-02 2006-06-22 Hosei Univ Automatic lecture content creating system
CN100338621C (en) * 2005-04-07 2007-09-19 上海交通大学 Eigenvalue error compensation on limited sample collection and parameter distribution correcting method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2658137B2 (en) * 1988-03-11 1997-09-30 沖電気工業株式会社 Character recognition method
JP3017740B2 (en) * 1988-08-23 2000-03-13 ソニー株式会社 Online character recognition device and online character recognition method
US5590220A (en) * 1992-08-12 1996-12-31 International Business Machines Corporation Bending point extraction method for optical character recognition system

Also Published As

Publication number Publication date
EP0710384A4 (en) 1997-05-02
EP0710384A1 (en) 1996-05-08
FI960110A0 (en) 1996-01-10
AU2431695A (en) 1995-12-18
PL312469A1 (en) 1996-04-29
MX9600189A (en) 1998-11-29
CA2162489A1 (en) 1998-06-01
HUT75820A (en) 1997-05-28
CN1128074A (en) 1996-07-31
FI960110A (en) 1996-01-10
HU9503882D0 (en) 1996-02-28
IL113659A0 (en) 1995-08-31
JP2002515144A (en) 2002-05-21
BR9506197A (en) 1996-04-24
CZ6196A3 (en) 1996-06-12
SK3096A3 (en) 1996-10-02
NO955064D0 (en) 1995-12-14
WO1995032485A1 (en) 1995-11-30

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