ZA915604B - Detecting skew in digitised images - Google Patents

Detecting skew in digitised images

Info

Publication number
ZA915604B
ZA915604B ZA915604A ZA915604A ZA915604B ZA 915604 B ZA915604 B ZA 915604B ZA 915604 A ZA915604 A ZA 915604A ZA 915604 A ZA915604 A ZA 915604A ZA 915604 B ZA915604 B ZA 915604B
Authority
ZA
South Africa
Prior art keywords
detecting skew
digitised images
digitised
images
skew
Prior art date
Application number
ZA915604A
Other languages
English (en)
Inventor
Gary Stuart Donald Farrow
Stuart Donald Farrow Gary
Costas Spyros Xydeas
Spyros Xydeas Costas
Original Assignee
Int Computers Ltd
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 Int Computers Ltd filed Critical Int Computers Ltd
Publication of ZA915604B publication Critical patent/ZA915604B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • 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
    • G06V30/146—Aligning or centring of the image pick-up or image-field
    • G06V30/1475—Inclination or skew detection or correction of characters or of image to be recognised
    • G06V30/1478—Inclination or skew detection or correction of characters or of image to be recognised of characters or characters lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00684—Object of the detection
    • H04N1/00718—Skew
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00763—Action taken as a result of detection
    • H04N1/00766—Storing data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/00681—Detecting the presence, position or size of a sheet or correcting its position before scanning
    • H04N1/00785—Correcting the position of a sheet before scanning
    • H04N1/00787—Correcting the position of a sheet before scanning using mechanical means
    • 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)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Image Processing (AREA)
  • Character Input (AREA)
ZA915604A 1990-10-17 1991-07-17 Detecting skew in digitised images ZA915604B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB909022483A GB9022483D0 (en) 1990-10-17 1990-10-17 Detecting skew in digitised images

Publications (1)

Publication Number Publication Date
ZA915604B true ZA915604B (en) 1992-04-29

Family

ID=10683828

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA915604A ZA915604B (en) 1990-10-17 1991-07-17 Detecting skew in digitised images

Country Status (5)

Country Link
EP (1) EP0485051A3 (xx)
JP (1) JPH04333183A (xx)
AU (1) AU8581791A (xx)
GB (1) GB9022483D0 (xx)
ZA (1) ZA915604B (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2100324C (en) * 1992-08-06 2004-09-28 Christoph Eisenbarth Method and apparatus for determining mis-registration
CA2116600C (en) * 1993-04-10 1996-11-05 David Jack Ittner Methods and apparatus for inferring orientation of lines of text
US5818976A (en) * 1993-10-25 1998-10-06 Visioneer, Inc. Method and apparatus for document skew and size/shape detection
EP0702320A1 (en) * 1994-09-15 1996-03-20 Hewlett-Packard Company Skew detection
CN107195070B (zh) * 2017-05-18 2019-09-20 深圳怡化电脑股份有限公司 一种黑条鉴定方法与装置
CN111031188B (zh) * 2019-11-28 2021-07-06 宁波华高信息科技有限公司 基于cis传感器的扫描仪的纸张歪斜检测方法

Also Published As

Publication number Publication date
EP0485051A3 (en) 1993-05-26
JPH04333183A (ja) 1992-11-20
AU8581791A (en) 1992-04-30
EP0485051A2 (en) 1992-05-13
GB9022483D0 (en) 1990-11-28

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