JP4641461B2 - 画像処理装置および画像処理方法、並びにプログラム - Google Patents

画像処理装置および画像処理方法、並びにプログラム Download PDF

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Publication number
JP4641461B2
JP4641461B2 JP2005219484A JP2005219484A JP4641461B2 JP 4641461 B2 JP4641461 B2 JP 4641461B2 JP 2005219484 A JP2005219484 A JP 2005219484A JP 2005219484 A JP2005219484 A JP 2005219484A JP 4641461 B2 JP4641461 B2 JP 4641461B2
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Japan
Prior art keywords
area
halftone
tile
pixel
data
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JP2005219484A
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English (en)
Japanese (ja)
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JP2006042367A (ja
JP2006042367A5 (enExample
Inventor
ジョン ワーク ティモシー
ベスリー ジェイムス
フィリップ アンドリュー ジェームス
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Canon Inc
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Canon Inc
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Priority claimed from AU2004904242A external-priority patent/AU2004904242A0/en
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Publication of JP2006042367A publication Critical patent/JP2006042367A/ja
Publication of JP2006042367A5 publication Critical patent/JP2006042367A5/ja
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Publication of JP4641461B2 publication Critical patent/JP4641461B2/ja
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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
    • H04N1/40—Picture signal circuits
    • H04N1/40075—Descreening, i.e. converting a halftone signal into a corresponding continuous-tone signal; Rescreening, i.e. combined descreening and halftoning

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Image Processing (AREA)
JP2005219484A 2004-07-29 2005-07-28 画像処理装置および画像処理方法、並びにプログラム Expired - Fee Related JP4641461B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004904242A AU2004904242A0 (en) 2004-07-29 Halftone Detection and Removal
AU2004904250A AU2004904250A0 (en) 2004-07-29 Removal of Halftone in Scanned Documents

Publications (3)

Publication Number Publication Date
JP2006042367A JP2006042367A (ja) 2006-02-09
JP2006042367A5 JP2006042367A5 (enExample) 2008-09-11
JP4641461B2 true JP4641461B2 (ja) 2011-03-02

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Family Applications (1)

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JP2005219484A Expired - Fee Related JP4641461B2 (ja) 2004-07-29 2005-07-28 画像処理装置および画像処理方法、並びにプログラム

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Country Link
US (1) US7586647B2 (enExample)
JP (1) JP4641461B2 (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100926193B1 (ko) * 2004-12-21 2009-11-09 캐논 가부시끼가이샤 디지털 화상 분할 및 콤팩트한 표현 생성
US7925045B2 (en) * 2007-09-10 2011-04-12 Konica Minolta Systems Laboratory, Inc. Determining document authenticity in a closed-loop process
US11403782B2 (en) * 2019-12-31 2022-08-02 Alibaba Group Holding Limited Static channel filtering in frequency domain
JP7508930B2 (ja) 2020-07-31 2024-07-02 コニカミノルタ株式会社 画像処理装置、画像処理方法及びプログラム
CN116823796B (zh) * 2023-07-13 2025-05-06 常州市新创智能科技有限公司 非均匀玻纤布的横条检测方法、装置、设备及介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4403257A (en) 1982-03-19 1983-09-06 Xerox Corporation Halftone detection and delineation
JPH0563996A (ja) 1991-09-02 1993-03-12 Ricoh Co Ltd 画像処理装置
US5239390A (en) 1992-06-05 1993-08-24 Eastman Kodak Company Image processing method to remove halftone screens
AUPP444898A0 (en) 1998-07-02 1998-07-23 Canon Kabushiki Kaisha A method and apparatus for boundary filtering a digital image
US6563953B2 (en) * 1998-11-30 2003-05-13 Microsoft Corporation Predictive image compression using a single variable length code for both the luminance and chrominance blocks for each macroblock
US6650439B1 (en) 1999-09-09 2003-11-18 Xerox Corporation Segmentation tag cleanup system
JP2001257879A (ja) * 2000-03-10 2001-09-21 Tokyo Denshi Sekkei Kk ハーフトーン再現方法
JP3706830B2 (ja) * 2002-01-21 2005-10-19 パナソニック コミュニケーションズ株式会社 画像信号処理装置
US20040066538A1 (en) 2002-10-04 2004-04-08 Rozzi William A. Conversion of halftone bitmaps to continuous tone representations
US7312898B2 (en) * 2002-10-31 2007-12-25 Hewlett-Packard Development Company, L.P. Transformation of an input image to produce an output image

Also Published As

Publication number Publication date
US20060023259A1 (en) 2006-02-02
JP2006042367A (ja) 2006-02-09
US7586647B2 (en) 2009-09-08

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