TWI315957B - Page background detection and neutrality on scanned documents - Google Patents

Page background detection and neutrality on scanned documents

Info

Publication number
TWI315957B
TWI315957B TW093100004A TW93100004A TWI315957B TW I315957 B TWI315957 B TW I315957B TW 093100004 A TW093100004 A TW 093100004A TW 93100004 A TW93100004 A TW 93100004A TW I315957 B TWI315957 B TW I315957B
Authority
TW
Taiwan
Prior art keywords
neutrality
background detection
scanned documents
page background
page
Prior art date
Application number
TW093100004A
Other languages
English (en)
Other versions
TW200507623A (en
Inventor
Donald J Curry
Doron Kletter
Asghar Nafarieh
Original Assignee
Xerox 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
Priority claimed from US10/612,461 external-priority patent/US7200263B2/en
Priority claimed from US10/612,234 external-priority patent/US7236641B2/en
Priority claimed from US10/612,062 external-priority patent/US7382489B2/en
Priority claimed from US10/612,261 external-priority patent/US7233695B2/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of TW200507623A publication Critical patent/TW200507623A/zh
Application granted granted Critical
Publication of TWI315957B publication Critical patent/TWI315957B/zh

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • G06T5/94—Dynamic range modification of images or parts thereof based on local image properties, e.g. for local contrast enhancement
    • 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
    • H04N1/40—Picture signal circuits
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Color Image Communication Systems (AREA)
  • Image Input (AREA)
  • Picture Signal Circuits (AREA)
TW093100004A 2003-07-01 2004-01-02 Page background detection and neutrality on scanned documents TWI315957B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/612,461 US7200263B2 (en) 2002-07-01 2003-07-01 Background suppression and color adjustment method
US10/612,234 US7236641B2 (en) 2002-07-01 2003-07-01 Page background detection and neutrality on scanned documents
US10/612,062 US7382489B2 (en) 2002-07-01 2003-07-01 Efficient interpolation technique using programmable node spacing
US10/612,261 US7233695B2 (en) 2002-07-01 2003-07-01 Scan color conversion method

Publications (2)

Publication Number Publication Date
TW200507623A TW200507623A (en) 2005-02-16
TWI315957B true TWI315957B (en) 2009-10-11

Family

ID=33437193

Family Applications (1)

Application Number Title Priority Date Filing Date
TW093100004A TWI315957B (en) 2003-07-01 2004-01-02 Page background detection and neutrality on scanned documents

Country Status (3)

Country Link
EP (1) EP1494454A3 (zh)
JP (1) JP4515107B2 (zh)
TW (1) TWI315957B (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8134762B2 (en) 2007-01-29 2012-03-13 Sharp Laboratories Of America, Inc. Methods and systems for characterizing regions of substantially-uniform color in a digital image
US9426329B2 (en) * 2014-07-10 2016-08-23 Csr Imaging Us, Lp Image processing system of background removal and white/black point compensation
CN109414171A (zh) 2016-04-06 2019-03-01 锐珂牙科技术顶阔有限公司 利用压缩传感的口内oct

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5414538A (en) * 1993-10-07 1995-05-09 Xerox Corporation Image-dependent exposure enhancement
JPH0993445A (ja) * 1995-09-20 1997-04-04 Fuji Xerox Co Ltd 画像処理装置
US5802214A (en) * 1995-12-08 1998-09-01 Xerox Corporation Method for determining and loading an image-dependent look-up table for generating an enhanced image representation
US6043900A (en) * 1998-03-31 2000-03-28 Xerox Corporation Method and system for automatically detecting a background type of a scanned document utilizing a leadedge histogram thereof
JP4208396B2 (ja) * 2000-08-31 2009-01-14 キヤノン株式会社 画像処理方法、装置および記録媒体

Also Published As

Publication number Publication date
EP1494454A2 (en) 2005-01-05
TW200507623A (en) 2005-02-16
EP1494454A3 (en) 2007-11-28
JP4515107B2 (ja) 2010-07-28
JP2005326904A (ja) 2005-11-24

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees