DE69421448D1 - Bildverarbeitungsverfahren und -gerät - Google Patents

Bildverarbeitungsverfahren und -gerät

Info

Publication number: DE69421448D1
Authority: DE; Germany
Prior art keywords: image processing; processing method; image; processing
Prior art date: 1993-05-24
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

Application number

DE69421448T

Other languages

English (en)

Other versions

DE69421448T2 (de

Inventor

Takeshi Makita

Susumu Sugiura

Osamu Yamada

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Canon Inc

Original Assignee

Canon Inc

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.)

1993-05-24

Filing date

1994-05-23

Publication date

1999-12-09

1994-05-23 Application filed by Canon Inc filed Critical Canon Inc

1999-12-09 Publication of DE69421448D1 publication Critical patent/DE69421448D1/de

2000-05-04 Application granted granted Critical

2000-05-04 Publication of DE69421448T2 publication Critical patent/DE69421448T2/de

2014-05-24 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
- H04N5/213—Circuitry for suppressing or minimising impulsive noise

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Image Processing (AREA)
Facsimile Image Signal Circuits (AREA)
Controls And Circuits For Display Device (AREA)

DE69421448T 1993-05-24 1994-05-23 Bildverarbeitungsverfahren und -gerät Expired - Fee Related DE69421448T2 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP12121193A JP3171993B2 (ja)	1993-05-24	1993-05-24	画像処理方法及び装置

Publications (2)

Publication Number	Publication Date
DE69421448D1 true DE69421448D1 (de)	1999-12-09
DE69421448T2 DE69421448T2 (de)	2000-05-04

Family

ID=14805633

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE69421448T Expired - Fee Related DE69421448T2 (de)	1993-05-24	1994-05-23	Bildverarbeitungsverfahren und -gerät

Country Status (4)

Country	Link
US (2)	US5463478A (de)
EP (1)	EP0626780B1 (de)
JP (1)	JP3171993B2 (de)
DE (1)	DE69421448T2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5739808A (en) *	1994-10-28	1998-04-14	Canon Kabushiki Kaisha	Display control method and apparatus
JP3089960B2 (ja) *	1994-11-17	2000-09-18	株式会社富士通ゼネラル	誤差拡散回路
JP3139312B2 (ja) *	1994-11-25	2001-02-26	株式会社富士通ゼネラル	ディスプレイ駆動方法および装置
JP3651941B2 (ja) *	1994-11-28	2005-05-25	キヤノン株式会社	画像再生装置
US5710836A (en) *	1994-12-01	1998-01-20	Xerox Corporation	System and apparatus for tonal reproduction adjustment in an error diffusion process
KR100337866B1 (ko) *	1995-09-06	2002-11-04	삼성에스디아이 주식회사	매트릭스형 액정 표시 소자의 다계조 표시 구동 방법
JP3397059B2 (ja) *	1996-11-07	2003-04-14	セイコーエプソン株式会社	印刷装置および画像記録方法
JP3644183B2 (ja) *	1997-03-17	2005-04-27	富士ゼロックス株式会社	画像処理装置
US6201582B1 (en) *	1997-09-19	2001-03-13	Philips Electronics North America Corporation	Circuit for moiré suppression
JP3700357B2 (ja)	1997-11-25	2005-09-28	コニカミノルタビジネステクノロジーズ株式会社	画像処理装置
US7428011B1 (en)	1999-09-02	2008-09-23	Fujifilm Corporation	Wide dynamic range electronic image recording and reproducing system
US6697169B1 (en)	1999-12-08	2004-02-24	Sharp Laboratories Of America, Inc.	Enhanced error diffusion using a correlated chromatic noise pattern
JP6770828B2 (ja) *	2016-05-19	2020-10-21	オリンパス株式会社	顕微鏡

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4823194A (en) *	1986-08-01	1989-04-18	Hitachi, Ltd.	Method for processing gray scale images and an apparatus thereof
US4680645A (en) *	1986-08-25	1987-07-14	Hewlett-Packard Company	Method for rendering gray scale images with variable dot sizes
US5252986A (en) *	1987-05-20	1993-10-12	Canon Kabushiki Kaisha	Image processing method for superposing plural dots on a recording medium at a predetermined interval and apparatus utilizing same
US4924322A (en) *	1988-03-18	1990-05-08	Matsushita Electric Industrial Co., Ltd.	Bi-level image display signal processing apparatus
JPH0220185A (ja) *	1988-07-08	1990-01-23	Ricoh Co Ltd	動画像伝送方式
JPH03129987A (ja) *	1989-10-14	1991-06-03	Sony Corp	映像信号符号化装置及び映像信号符号化方法
US5025316A (en) *	1989-11-06	1991-06-18	North American Philips Corporation	Video noise reduction system with measured noise input
JP2581341B2 (ja) *	1991-04-26	1997-02-12	日本ビクター株式会社	高能率符号化装置及び復号化装置
US5262878A (en) *	1991-06-14	1993-11-16	General Instrument Corporation	Method and apparatus for compressing digital still picture signals
US5243443A (en) *	1991-12-06	1993-09-07	Xerox Corporation	Halftoning with error feedback and image dependent enhancement
US5245678A (en) *	1991-12-20	1993-09-14	Xerox Corporation	Image conversion with lossy adaptive error diffusion
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
JP3177543B2 (ja) *	1992-07-22	2001-06-18	トウシバビデオプロダクツプライベートリミテッド	映像信号のノイズ低減装置
US5353127A (en) *	1993-12-15	1994-10-04	Xerox Corporation	Method for quantization gray level pixel data with extended distribution set

1993
- 1993-05-24 JP JP12121193A patent/JP3171993B2/ja not_active Expired - Fee Related
1994
- 1994-05-17 US US08/243,929 patent/US5463478A/en not_active Expired - Fee Related
- 1994-05-23 EP EP94303669A patent/EP0626780B1/de not_active Expired - Lifetime
- 1994-05-23 DE DE69421448T patent/DE69421448T2/de not_active Expired - Fee Related
1995
- 1995-06-05 US US08/464,367 patent/US5621476A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
JPH06332396A (ja)	1994-12-02
US5621476A (en)	1997-04-15
EP0626780A2 (de)	1994-11-30
US5463478A (en)	1995-10-31
EP0626780A3 (de)	1995-07-19
JP3171993B2 (ja)	2001-06-04
DE69421448T2 (de)	2000-05-04
EP0626780B1 (de)	1999-11-03

Publication	Publication Date	Title
DE69429464D1 (de)	2002-01-31	Bildverarbeitungsverfahren- und gerät
DE69429962D1 (de)	2002-04-04	Bildverarbeitungsvorrichtung und -verfahren
DE69430464D1 (de)	2002-05-29	Bildverarbeitungsgerät und -verfahren
DE69427497D1 (de)	2001-07-26	Bildverarbeitungsvorrichtung und -verfahren
DE69429854D1 (de)	2002-03-21	Bildverarbeitungsverfahren und -gerät
DE69433603D1 (de)	2004-04-15	Bildverarbeitungsverfahren und -gerät
DE69232992D1 (de)	2003-05-08	Bildverarbeitungsverfahren und -Gerät
DE69325765D1 (de)	1999-09-02	Bildverarbeitungsgerät und -verfahren
DE69519504D1 (de)	2001-01-04	Bildverarbeitungsverfahren und -vorrichtung
DE69524357D1 (de)	2002-01-17	Bildverarbeitungsvorrichtung und -verfahren
DE69522386D1 (de)	2001-10-04	Bildverarbeitungsgerät und -verfahren
DE69519196D1 (de)	2000-11-30	Bildverarbeitungsgerät und -verfahren
DE69324290D1 (de)	1999-05-12	Bildverarbeitungsverfahren und -gerät
DE69514143D1 (de)	2000-02-03	Bildverarbeitungsvorrichtung und -verfahren
DE69524899D1 (de)	2002-02-14	Bildverarbeitungsverfahren und -gerät
DE69329983D1 (de)	2001-04-12	Bildverarbeitungsverfahren und -vorrichtung
DE69516734D1 (de)	2000-06-15	Bildverarbeitungsverfahren und -gerät
DE69326210D1 (de)	1999-10-07	Bildverarbeitungsvorrichtung und -verfahren
DE69521550D1 (de)	2001-08-09	Bildverarbeitungsverfahren und -vorrichtung
DE69324874D1 (de)	1999-06-17	Bildverarbeitungsverfahren und -gerät
DE69323222D1 (de)	1999-03-11	Bildbearbeitungsverfahren und -vorrichtung
DE69333421D1 (de)	2004-04-01	Bildverarbeitungsverfahren und -vorrichtung
DE69415712D1 (de)	1999-02-18	Bildverarbeitungsverfahren und -vorrichtung
DE69329449D1 (de)	2000-10-26	Bildverarbeitungsvorrichtung und -verfahren
DE69324301D1 (de)	1999-05-12	Bildverarbeitungsvorrichtung und -verfahren

Legal Events

Date	Code	Title	Description
2000-11-23	8364	No opposition during term of opposition
2005-03-17	8339	Ceased/non-payment of the annual fee