DE69022469T2 - Zitter-Bildverarbeitungsmethode. - Google Patents
Zitter-Bildverarbeitungsmethode.Info
- Publication number
- DE69022469T2 DE69022469T2 DE69022469T DE69022469T DE69022469T2 DE 69022469 T2 DE69022469 T2 DE 69022469T2 DE 69022469 T DE69022469 T DE 69022469T DE 69022469 T DE69022469 T DE 69022469T DE 69022469 T2 DE69022469 T2 DE 69022469T2
- Authority
- DE
- Germany
- Prior art keywords
- shivering
- image processing
- processing method
- image
- shivering image
- 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 - Lifetime
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
- H04N1/4055—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern
- H04N1/4058—Halftoning, i.e. converting the picture signal of a continuous-tone original into a corresponding signal showing only two levels producing a clustered dots or a size modulated halftone pattern with details for producing a halftone screen at an oblique angle
-
- 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
-
- 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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1103695A JP2928786B2 (ja) | 1989-04-24 | 1989-04-24 | 中間調画像の表現方法 |
JP1147229A JP2729278B2 (ja) | 1989-06-09 | 1989-06-09 | 画像の2値化表現方法 |
JP1157164A JP2729279B2 (ja) | 1989-06-20 | 1989-06-20 | 画像の閾値処理方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69022469D1 DE69022469D1 (de) | 1995-10-26 |
DE69022469T2 true DE69022469T2 (de) | 1996-03-14 |
Family
ID=27310049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69022469T Expired - Lifetime DE69022469T2 (de) | 1989-04-24 | 1990-04-23 | Zitter-Bildverarbeitungsmethode. |
Country Status (4)
Country | Link |
---|---|
US (3) | US5201013A (de) |
EP (1) | EP0394929B1 (de) |
KR (1) | KR0173456B1 (de) |
DE (1) | DE69022469T2 (de) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5341228A (en) | 1990-12-04 | 1994-08-23 | Research Corporation Technologies | Method and apparatus for halftone rendering of a gray scale image using a blue noise mask |
US5442462A (en) * | 1992-06-10 | 1995-08-15 | D.V.P. Technologies Ltd. | Apparatus and method for smoothing images |
US5799111A (en) * | 1991-06-14 | 1998-08-25 | D.V.P. Technologies, Ltd. | Apparatus and methods for smoothing images |
US5898796A (en) * | 1992-07-21 | 1999-04-27 | Minolta Co., Ltd. | Method of processing image having value of error data controlled based on image characteristic in region to which pixel belongs |
US5365251A (en) * | 1992-08-28 | 1994-11-15 | Xerox Corporation | Image quality improvement by hierarchical pattern matching with variable size templates |
US5495345A (en) * | 1992-10-15 | 1996-02-27 | Digital Equipment Corporation | Imaging system with two level dithering using comparator |
JPH0738767A (ja) * | 1993-07-19 | 1995-02-07 | Canon Inc | 画像2値化処理装置 |
US5521989A (en) * | 1993-08-05 | 1996-05-28 | Xerox Corporation | Balanced error diffusion system |
US5621542A (en) * | 1994-01-20 | 1997-04-15 | Canon Kabushiki Kaisha | Image processing apparatus and method with weighting of error data generated in quantization |
US5463703A (en) * | 1994-02-10 | 1995-10-31 | Lin; Bob | Dither picture data pre-compression processing method |
US5499305A (en) * | 1994-03-30 | 1996-03-12 | Lasermaster Corporation | Method and apparatus for coalescing a grayscale image and rendering the coalesced grayscale image as a binary image |
JPH07307866A (ja) * | 1994-05-10 | 1995-11-21 | Fuji Photo Film Co Ltd | 画像信号2値化処理装置および方法 |
US5557709A (en) * | 1994-07-01 | 1996-09-17 | Seiko Epson Corporation | Method and apparatus for dither array generation to reduce artifacts in halftoned images |
US5684932A (en) * | 1994-07-01 | 1997-11-04 | Seiko Epson Corporation | Method and apparatus for dither array generation to reduce artifacts in halftoned image data utilizing ink reduction processing |
US5579457A (en) * | 1994-07-29 | 1996-11-26 | The Harlequin Group Ltd. | Image display apparatus and method using irregularly placed curving structures |
EP0772934B1 (de) * | 1994-07-29 | 2000-10-04 | Harlequin Limited | Bildwiedergabe unter benutzung von gleichmässig verteilten intensitätsgruppen |
US5636294A (en) * | 1994-08-09 | 1997-06-03 | Unisys Corporation | Method and apparatus for truncation of images during data compression |
US5517584A (en) * | 1994-08-09 | 1996-05-14 | Unisys Corporation | Method and apparatus for high-speed implementation of scaling, dithering, and data remapping operations with a single processor |
JP3381755B2 (ja) * | 1994-10-11 | 2003-03-04 | セイコーエプソン株式会社 | 画像の粒状性を減らすための改良された適応性のあるフィルタリングおよび閾値設定の方法及び装置 |
US5870503A (en) * | 1994-10-20 | 1999-02-09 | Minolta Co., Ltd. | Image processing apparatus using error diffusion technique |
US5534945A (en) * | 1994-12-16 | 1996-07-09 | International Business Machines Corporation | System and method for providing black diffusion in video image processing |
JPH08265568A (ja) * | 1995-03-20 | 1996-10-11 | Hitachi Ltd | デジタル階調処理装置およびデジタル階調処理方法 |
US5710828A (en) * | 1995-03-30 | 1998-01-20 | Fuji Photo Film Co., Ltd. | Method and apparatus for converting a threshold matrix which is then used to binarize image signals |
AUPN743096A0 (en) * | 1996-01-05 | 1996-02-01 | Canon Kabushiki Kaisha | Force field halftoning |
US5625756A (en) * | 1996-04-23 | 1997-04-29 | Hewlett-Packard Company | Efficient use of dither matrix based gray level patterns |
JP3387738B2 (ja) * | 1996-06-28 | 2003-03-17 | 株式会社沖データ | 画像パターン変換装置 |
US6028677A (en) * | 1997-09-16 | 2000-02-22 | Hewlett-Packard Co. | Method and apparatus for converting a gray level pixel image to a binary level pixel image |
JP3974714B2 (ja) * | 1997-10-17 | 2007-09-12 | 東芝テック株式会社 | 画像処理方法 |
JP2001157056A (ja) * | 1999-11-30 | 2001-06-08 | Fujitsu Ltd | ハーフトーン化方法およびハーフトーン化装置並びにハーフトーン化プログラムを記録したコンピュータ読み取り可能な記録媒体 |
US6804373B1 (en) * | 2000-06-15 | 2004-10-12 | International Business Machines Corporation | Method and system using renormalized pixels for public key and compressed images watermarks on prints |
US7081972B2 (en) * | 2000-09-20 | 2006-07-25 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
KR100859507B1 (ko) * | 2001-12-05 | 2008-09-22 | 삼성전자주식회사 | 디더링 장치 및 디더링 방법 |
JP4047119B2 (ja) * | 2002-09-20 | 2008-02-13 | キヤノン株式会社 | 画像処理装置及び画像処理方法 |
US7330191B2 (en) * | 2005-01-19 | 2008-02-12 | Seiko Epson Corporation | System for secure text display |
US7483587B2 (en) * | 2005-04-29 | 2009-01-27 | Texas Instruments Incorporated | Iterative filtering for dithered imaging |
JP4412248B2 (ja) * | 2005-07-05 | 2010-02-10 | セイコーエプソン株式会社 | 画像処理装置、画像処理方法、及び画像処理プログラム |
JP4238902B2 (ja) * | 2006-09-04 | 2009-03-18 | 日本電気株式会社 | 文字ノイズ除去装置、文字ノイズ除去方法、文字ノイズ除去プログラム |
KR100791389B1 (ko) * | 2006-12-26 | 2008-01-07 | 삼성전자주식회사 | 스트럭쳐드 라이트를 이용한 거리 측정 장치 및 방법 |
JP5472617B2 (ja) * | 2010-02-09 | 2014-04-16 | 富士ゼロックス株式会社 | 画像処理装置、画像形成装置、画像処理プログラム |
JP5573451B2 (ja) * | 2010-07-21 | 2014-08-20 | コニカミノルタ株式会社 | 画像処理装置及び画像処理方法 |
US9168757B2 (en) * | 2013-08-22 | 2015-10-27 | Canon Kabushiki Kaisha | Image processing apparatus and image processing method |
WO2015055235A1 (en) * | 2013-10-15 | 2015-04-23 | Hewlett-Packard Development Company, L.P. | Image processing using content-based weighted dithering |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0031247B1 (de) * | 1979-12-20 | 1984-03-14 | Cambridge Consultants Limited | Vorrichtung und Verfahren zur Herstellung eines aus Streupunkten bestehenden Halbtonbildes aus einem Normalbild |
US4449150A (en) * | 1981-01-19 | 1984-05-15 | Ricoh Company, Ltd. | Method of processing medium tone picture |
DE3312273C3 (de) * | 1982-04-06 | 1996-03-21 | Canon Kk | Bildverarbeitungsgerät |
JPS58202666A (ja) * | 1982-05-21 | 1983-11-25 | Ricoh Co Ltd | 2値化方式 |
JPS59163959A (ja) * | 1983-03-08 | 1984-09-17 | Fujitsu Ltd | 中間調画像変換方式 |
US4545024A (en) * | 1983-04-27 | 1985-10-01 | At&T Bell Laboratories | Hybrid natural random number generator |
JPH0691604B2 (ja) * | 1983-09-02 | 1994-11-14 | 株式会社リコー | 階調情報変倍処理方法 |
EP0141869B1 (de) * | 1983-11-14 | 1987-09-16 | DR.-ING. RUDOLF HELL GmbH | Verfahren und Einrichtung zur Herstellung gerasterter Druckformen |
US4783838A (en) * | 1984-12-26 | 1988-11-08 | Konishiroku Photo Industry Co., Ltd. | Image processing method and apparatus therefor |
US4654721A (en) * | 1985-04-12 | 1987-03-31 | International Business Machines Corporation | System for reproducing multi-level digital images on a bi-level printer of fixed dot size |
US4758897A (en) * | 1985-04-30 | 1988-07-19 | Konishiroku Photo Industry Co., Ltd. | Method and apparatus for estimating halftone image from binary image |
NL8501956A (nl) * | 1985-07-09 | 1987-02-02 | Philips Nv | Beeldherstelschakeling. |
JPH0777418B2 (ja) * | 1986-03-17 | 1995-08-16 | 株式会社東芝 | 画像処理装置 |
DE3751916D1 (de) * | 1986-12-19 | 1996-10-24 | Matsushita Electric Ind Co Ltd | Gerät zur Verarbeitung von Signalen für die Anzeige von Bildern mit zwei Pegeln |
US4878125A (en) * | 1987-01-08 | 1989-10-31 | Canon Kabushiki Kaisha | Method and apparatus for image processing with fed-back error correction |
US4955065A (en) * | 1987-03-17 | 1990-09-04 | Digital Equipment Corporation | System for producing dithered images from continuous-tone image data |
US4975786A (en) * | 1987-12-28 | 1990-12-04 | Canon Kabushiki Kaisha | Image processing method and apparatus with error diffusion capability |
US4924322A (en) * | 1988-03-18 | 1990-05-08 | Matsushita Electric Industrial Co., Ltd. | Bi-level image display signal processing apparatus |
US4891714A (en) * | 1989-04-24 | 1990-01-02 | Eastman Kodak Company | Apparatus for non-linear error diffusion thresholding of multilevel video images |
US5150428A (en) * | 1991-04-01 | 1992-09-22 | Eastman Kodak Company | Method for generating halftone image data with randomly selected threshold array |
-
1990
- 1990-04-20 US US07/512,258 patent/US5201013A/en not_active Expired - Lifetime
- 1990-04-23 DE DE69022469T patent/DE69022469T2/de not_active Expired - Lifetime
- 1990-04-23 EP EP90107677A patent/EP0394929B1/de not_active Expired - Lifetime
- 1990-04-24 KR KR1019900005781A patent/KR0173456B1/ko not_active IP Right Cessation
-
1992
- 1992-05-08 US US07/881,730 patent/US5315669A/en not_active Expired - Lifetime
-
1994
- 1994-05-23 US US08/247,397 patent/US5438634A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5201013A (en) | 1993-04-06 |
KR900017371A (ko) | 1990-11-16 |
US5315669A (en) | 1994-05-24 |
EP0394929B1 (de) | 1995-09-20 |
EP0394929A3 (de) | 1991-09-25 |
EP0394929A2 (de) | 1990-10-31 |
US5438634A (en) | 1995-08-01 |
DE69022469D1 (de) | 1995-10-26 |
KR0173456B1 (ko) | 1999-03-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: YOZAN INC., TOKIO/TOKYO, JP SHARP K.K., OSAKA, JP |
|
8327 | Change in the person/name/address of the patent owner |
Owner name: YOZAN, INC., TOKIO/TOKYO, JP SHARP K.K., OSAKA, JP |