JP3779400B2 - 画像処理方法 - Google Patents
画像処理方法 Download PDFInfo
- Publication number
- JP3779400B2 JP3779400B2 JP31777496A JP31777496A JP3779400B2 JP 3779400 B2 JP3779400 B2 JP 3779400B2 JP 31777496 A JP31777496 A JP 31777496A JP 31777496 A JP31777496 A JP 31777496A JP 3779400 B2 JP3779400 B2 JP 3779400B2
- Authority
- JP
- Japan
- Prior art keywords
- white
- reference value
- unit
- document
- peak position
- 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.)
- Expired - Fee Related
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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
- H04N1/40062—Discrimination between different image types, e.g. two-tone, continuous tone
-
- 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
- H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
- H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original
- H04N1/4074—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original using histograms
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Processing (AREA)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31777496A JP3779400B2 (ja) | 1996-11-28 | 1996-11-28 | 画像処理方法 |
| EP97120373A EP0845716B1 (en) | 1996-11-28 | 1997-11-20 | Image processing apparatus having image area recognition function and image processing method |
| DE69713473T DE69713473T2 (de) | 1996-11-28 | 1997-11-20 | Bildverarbeitungsgerät mit Bildbereichserkennungsfunktion und Bildverarbeitungsverfahren |
| US08/979,857 US6028958A (en) | 1996-11-28 | 1997-11-26 | Image processing apparatus having image area recognition function and image processing method |
| CNB971230234A CN1146757C (zh) | 1996-11-28 | 1997-11-27 | 图像处理方法和图像处理装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31777496A JP3779400B2 (ja) | 1996-11-28 | 1996-11-28 | 画像処理方法 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPH10164368A JPH10164368A (ja) | 1998-06-19 |
| JPH10164368A5 JPH10164368A5 (enExample) | 2004-11-11 |
| JP3779400B2 true JP3779400B2 (ja) | 2006-05-24 |
Family
ID=18091908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31777496A Expired - Fee Related JP3779400B2 (ja) | 1996-11-28 | 1996-11-28 | 画像処理方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6028958A (enExample) |
| EP (1) | EP0845716B1 (enExample) |
| JP (1) | JP3779400B2 (enExample) |
| CN (1) | CN1146757C (enExample) |
| DE (1) | DE69713473T2 (enExample) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4097800B2 (ja) | 1998-09-07 | 2008-06-11 | 株式会社東芝 | 画像処理方法および画像処理装置 |
| WO2000052922A1 (fr) * | 1999-03-02 | 2000-09-08 | Seiko Epson Corporation | Dispositif et procede permettant d'evaluer l'arriere-plan de donnees d'image, et support d'enregistrement destine au programme de commande de l'evaluation de l'arriere-plan de donnees d'image |
| JP3325243B2 (ja) | 1999-09-20 | 2002-09-17 | 京セラミタ株式会社 | 画像処理装置 |
| US6993719B1 (en) | 2000-02-11 | 2006-01-31 | Sony Corporation | System and method for animated character photo-editing interface and cross-platform education icon |
| US7136528B2 (en) * | 2000-02-11 | 2006-11-14 | Sony Corporation | System and method for editing digital images |
| US7262778B1 (en) | 2000-02-11 | 2007-08-28 | Sony Corporation | Automatic color adjustment of a template design |
| JP2001251507A (ja) * | 2000-03-03 | 2001-09-14 | Fujitsu Ltd | 画像処理装置 |
| JP3885987B2 (ja) * | 2000-05-18 | 2007-02-28 | 株式会社リコー | 画像読取装置および画像形成装置 |
| JP4085580B2 (ja) * | 2001-02-20 | 2008-05-14 | 富士ゼロックス株式会社 | 画像処理装置 |
| US7058222B2 (en) * | 2001-12-20 | 2006-06-06 | Xerox Corporation | Automatic background detection of scanned documents |
| JP3898075B2 (ja) * | 2002-03-18 | 2007-03-28 | 株式会社リコー | 画像処理装置、画像処理方法及び記録媒体 |
| JP4126938B2 (ja) * | 2002-03-22 | 2008-07-30 | セイコーエプソン株式会社 | 画像処理装置および画像出力装置 |
| JP2006202209A (ja) | 2005-01-24 | 2006-08-03 | Toshiba Corp | 画像圧縮方法および画像圧縮装置 |
| JP2007067571A (ja) * | 2005-08-29 | 2007-03-15 | Fujitsu Ltd | 画像処理装置 |
| JP4282081B2 (ja) * | 2005-10-31 | 2009-06-17 | キヤノン株式会社 | 画像処理装置およびその方法 |
| DE102006055587B4 (de) * | 2006-11-24 | 2008-12-11 | OCé PRINTING SYSTEMS GMBH | Verfahren, Computerprogramm und Drucksystem zum Trapping von Druckdaten mit einer Vielzahl von Objekten |
| JP5041583B2 (ja) * | 2006-12-21 | 2012-10-03 | キヤノン株式会社 | 走査光学装置および画像形成装置 |
| WO2009093324A1 (ja) * | 2008-01-24 | 2009-07-30 | Fujitsu Limited | 画像処理装置、画像処理方法、画像処理プログラムおよび画像補正装置 |
| JP5361624B2 (ja) * | 2009-09-09 | 2013-12-04 | キヤノン株式会社 | 画像処理装置、画像処理方法、及び、プログラム |
| CN102455628B (zh) * | 2010-10-29 | 2014-08-13 | 京瓷办公信息系统株式会社 | 图像形成装置 |
| JP5939154B2 (ja) * | 2012-12-27 | 2016-06-22 | ブラザー工業株式会社 | 画像処理装置およびコンピュータプログラム |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4903145A (en) * | 1986-08-06 | 1990-02-20 | Canon Kabushiki Kaisha | Image quality control apparatus capable of density-correcting plural areas of different types |
| US4929979A (en) * | 1988-01-29 | 1990-05-29 | Konica Corporation | Method and apparatus for processing image |
| DE69325527T2 (de) * | 1992-02-21 | 1999-11-25 | Canon K.K., Tokio/Tokyo | Gerät und Verfahren zur Bildverarbeitung |
-
1996
- 1996-11-28 JP JP31777496A patent/JP3779400B2/ja not_active Expired - Fee Related
-
1997
- 1997-11-20 DE DE69713473T patent/DE69713473T2/de not_active Expired - Lifetime
- 1997-11-20 EP EP97120373A patent/EP0845716B1/en not_active Expired - Lifetime
- 1997-11-26 US US08/979,857 patent/US6028958A/en not_active Expired - Lifetime
- 1997-11-27 CN CNB971230234A patent/CN1146757C/zh not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP0845716A2 (en) | 1998-06-03 |
| CN1188261A (zh) | 1998-07-22 |
| EP0845716B1 (en) | 2002-06-19 |
| DE69713473D1 (de) | 2002-07-25 |
| US6028958A (en) | 2000-02-22 |
| CN1146757C (zh) | 2004-04-21 |
| JPH10164368A (ja) | 1998-06-19 |
| EP0845716A3 (en) | 1998-09-23 |
| DE69713473T2 (de) | 2003-02-06 |
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