ATE191821T1 - Bildverarbeitungsverfahren und -gerät - Google Patents
Bildverarbeitungsverfahren und -gerätInfo
- Publication number
- ATE191821T1 ATE191821T1 AT95300317T AT95300317T ATE191821T1 AT E191821 T1 ATE191821 T1 AT E191821T1 AT 95300317 T AT95300317 T AT 95300317T AT 95300317 T AT95300317 T AT 95300317T AT E191821 T1 ATE191821 T1 AT E191821T1
- Authority
- AT
- Austria
- Prior art keywords
- image
- image processing
- processing method
- data
- distributing
- Prior art date
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
- H04N1/40—Picture signal circuits
- H04N1/405—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels
- H04N1/4051—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size
- H04N1/4052—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a dispersed dots halftone pattern, the dots having substantially the same size by error diffusion, i.e. transferring the binarising error to neighbouring dot decisions
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Image Analysis (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00464794A JP3200274B2 (ja) | 1994-01-20 | 1994-01-20 | 画像処理方法及び装置 |
JP16209494A JP3200287B2 (ja) | 1994-07-14 | 1994-07-14 | 画像処理方法及び装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE191821T1 true ATE191821T1 (de) | 2000-04-15 |
Family
ID=26338462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT95300317T ATE191821T1 (de) | 1994-01-20 | 1995-01-19 | Bildverarbeitungsverfahren und -gerät |
Country Status (4)
Country | Link |
---|---|
US (1) | US5621542A (de) |
EP (1) | EP0664643B1 (de) |
AT (1) | ATE191821T1 (de) |
DE (1) | DE69516193T2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0983790A (ja) * | 1995-09-07 | 1997-03-28 | Canon Inc | 二値化処理装置 |
US6282323B1 (en) * | 1996-12-04 | 2001-08-28 | Canon Kabushiki Kaisha | Image processing method and apparatus |
JP3959698B2 (ja) * | 1998-02-24 | 2007-08-15 | ソニー株式会社 | 画像処理方法および装置 |
JP2000022951A (ja) * | 1998-07-02 | 2000-01-21 | Canon Inc | 画像処理方法及び装置 |
US6678073B1 (en) * | 2000-02-08 | 2004-01-13 | Oak Technology, Inc. | Error diffusion method and apparatus |
AUPQ766300A0 (en) | 2000-05-22 | 2000-06-15 | Canon Kabushiki Kaisha | Defective nozzle compensation |
US7319549B2 (en) | 2003-03-27 | 2008-01-15 | Lexmark International, Inc. | Multiple weight error diffusion |
JP4065532B2 (ja) * | 2003-05-09 | 2008-03-26 | キヤノン株式会社 | 画像処理装置、画像処理方法およびプログラム |
US8248660B2 (en) * | 2007-12-14 | 2012-08-21 | Qualcomm Incorporated | Efficient diffusion dithering using dyadic rationals |
JP5241429B2 (ja) * | 2008-10-24 | 2013-07-17 | キヤノン株式会社 | 画像形成装置およびその制御方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58215169A (ja) * | 1982-06-08 | 1983-12-14 | Konishiroku Photo Ind Co Ltd | 画信号の2値化装置 |
JPS6152073A (ja) * | 1984-08-21 | 1986-03-14 | Seiko Epson Corp | 画像処理方法 |
JPS61293068A (ja) * | 1985-06-20 | 1986-12-23 | Seiko Epson Corp | 画像処理方法 |
JPS6335074A (ja) * | 1986-07-30 | 1988-02-15 | Hitachi Ltd | 画像処理方法 |
US4680645A (en) * | 1986-08-25 | 1987-07-14 | Hewlett-Packard Company | Method for rendering gray scale images with variable dot sizes |
DE3785558T3 (de) * | 1986-12-19 | 1997-04-10 | Matsushita Electric Ind Co Ltd | Gerät zur Verarbeitung von Signalen für die Anzeige von Bildern mit zwei Pegeln. |
JPH0681257B2 (ja) * | 1986-12-19 | 1994-10-12 | 松下電器産業株式会社 | 画像信号処理装置 |
US5201013A (en) * | 1989-04-24 | 1993-04-06 | Ezel, Inc. | Dither processing method |
JPH04119763A (ja) * | 1990-09-11 | 1992-04-21 | Toshiba Corp | 画像処理装置 |
US5337160A (en) * | 1992-07-01 | 1994-08-09 | Hewlett-Packard | Error diffusion processor and method for converting a grey scale pixel image to a binary value pixel image |
JP3603906B2 (ja) * | 1994-04-15 | 2004-12-22 | 富士写真フイルム株式会社 | 画像信号2値化処理装置および方法 |
-
1995
- 1995-01-18 US US08/373,843 patent/US5621542A/en not_active Expired - Lifetime
- 1995-01-19 DE DE69516193T patent/DE69516193T2/de not_active Expired - Lifetime
- 1995-01-19 AT AT95300317T patent/ATE191821T1/de not_active IP Right Cessation
- 1995-01-19 EP EP95300317A patent/EP0664643B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69516193T2 (de) | 2000-11-23 |
EP0664643A2 (de) | 1995-07-26 |
DE69516193D1 (de) | 2000-05-18 |
EP0664643B1 (de) | 2000-04-12 |
EP0664643A3 (de) | 1995-12-06 |
US5621542A (en) | 1997-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |