DE69738149D1 - Punktzuwachskompensation - Google Patents
PunktzuwachskompensationInfo
- Publication number
- DE69738149D1 DE69738149D1 DE69738149T DE69738149T DE69738149D1 DE 69738149 D1 DE69738149 D1 DE 69738149D1 DE 69738149 T DE69738149 T DE 69738149T DE 69738149 T DE69738149 T DE 69738149T DE 69738149 D1 DE69738149 D1 DE 69738149D1
- Authority
- DE
- Germany
- Prior art keywords
- gain compensation
- dot gain
- dot
- compensation
- gain
- 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
- H04N1/4051—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
- H04N1/4053—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 with threshold modulated relative to input image data or vice versa
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65554896A | 1996-05-30 | 1996-05-30 | |
US655548 | 1996-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69738149D1 true DE69738149D1 (de) | 2007-10-31 |
DE69738149T2 DE69738149T2 (de) | 2008-06-12 |
Family
ID=24629335
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69738149T Expired - Lifetime DE69738149T2 (de) | 1996-05-30 | 1997-05-23 | Punktzuwachskompensation |
Country Status (4)
Country | Link |
---|---|
US (1) | US5768432A (de) |
EP (1) | EP0810772B1 (de) |
JP (1) | JPH1093820A (de) |
DE (1) | DE69738149T2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6289137B1 (en) * | 1994-06-02 | 2001-09-11 | Canon Kabushiki Kaisha | Image processing apparatus and method |
US5903361A (en) * | 1996-06-06 | 1999-05-11 | Xerox Corporation | Method and system for processing image information using background error diffusion |
US6055336A (en) * | 1996-11-18 | 2000-04-25 | Canon Kabushiki Kaisha | Image processing system which converts multi-value image data into binary image data |
JPH11175710A (ja) * | 1997-12-16 | 1999-07-02 | Sharp Corp | 画像形成装置 |
US6381035B1 (en) * | 1998-12-21 | 2002-04-30 | Xerox Corporation | Edge compaction in antialiased images |
US6356654B1 (en) | 1998-12-23 | 2002-03-12 | Xerox Corporation | Systems and methods for template matching of multicolored images |
US6343159B1 (en) | 1998-12-23 | 2002-01-29 | Xerox Corporation | Method and apparatus for modeling and reconstruction of halftoned images |
US6363177B1 (en) | 1998-12-30 | 2002-03-26 | Xerox Corporation | Systems and methods for rotating high addressability images |
US6381372B1 (en) | 1998-12-30 | 2002-04-30 | Xerox Corporation | Systems and methods for designing image processing filters using templates |
US6301397B1 (en) | 1998-12-30 | 2001-10-09 | Xerox Corporation | Systems and methods for rotating high addressability images |
US6771392B1 (en) * | 1999-09-24 | 2004-08-03 | Xerox Corporation | High resolution image mapping for simulating high resolution printing using high addressability without affecting halftone rendering |
US8432582B2 (en) * | 2004-08-20 | 2013-04-30 | Xerox Corporation | Uniformity compensation in halftoned images |
US7440632B2 (en) * | 2005-05-06 | 2008-10-21 | Intel Corporation | Technique for performing error diffusion |
US7532360B2 (en) * | 2005-09-16 | 2009-05-12 | Seiko Epson Corporation | Image output apparatus |
TWI475556B (zh) * | 2012-11-05 | 2015-03-01 | Chunghwa Picture Tubes Ltd | 用於提升顯示系統顯示的彩色影像之對比的方法以及利用此方法的影像處理系統 |
CN105900412B (zh) * | 2013-10-15 | 2018-11-06 | 惠普发展公司,有限责任合伙企业 | 使用基于内容的加权抖动进行图像处理的方法、图像处理器和打印机 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4876610A (en) * | 1986-12-25 | 1989-10-24 | Canon Kabushiki Kaisha | Image processing apparatus with binarization-error dispersal |
US4829587A (en) * | 1987-03-02 | 1989-05-09 | Digital Equipment Corporation | Fast bitonal to gray scale image scaling |
EP0395404B1 (de) * | 1989-04-27 | 1999-12-01 | Canon Kabushiki Kaisha | Bildverarbeitungsvorrichtung |
US5045952A (en) * | 1989-08-21 | 1991-09-03 | Xerox Corporation | Method for edge enhanced error diffusion |
US5034990A (en) * | 1989-09-05 | 1991-07-23 | Eastman Kodak Company | Edge enhancement error diffusion thresholding for document images |
US5087981A (en) * | 1990-01-02 | 1992-02-11 | Eastman Kodak Company | Error diffusion of overlapping dots |
US5410615A (en) * | 1990-09-25 | 1995-04-25 | Xerox Corporation | Bitmap image resolution converter compensating for write-white xerographic laser printing |
US5278671A (en) * | 1990-10-05 | 1994-01-11 | Nippon Steel Corporation | Image processing apparatus with correction of diffusion errors of overlapping dots |
US5442461A (en) * | 1991-09-03 | 1995-08-15 | Levien; Raphael L. | Screen generation for halftone screening of images with reduction of irrational correction artifacts |
JP2500834B2 (ja) * | 1991-09-05 | 1996-05-29 | ゼロックス コーポレイション | 画素値の量子化方法及び装置 |
US5268774A (en) * | 1991-11-27 | 1993-12-07 | Xerox Corporation | Halftoning with enhanced dynamic range and edge enhanced error diffusion |
US5258854A (en) * | 1991-12-06 | 1993-11-02 | Xerox Corporation | Converting between write-white, write-black and neutral bitmaps |
KR940005247B1 (ko) * | 1991-12-07 | 1994-06-15 | 삼성전자 주식회사 | 화상처리 시스템의 해상도 변환방법 |
JPH05344340A (ja) * | 1992-04-09 | 1993-12-24 | Matsushita Electric Ind Co Ltd | 階調変換処理方法および装置 |
US5274472A (en) * | 1992-05-21 | 1993-12-28 | Xerox Corporation | High addressability image generator using pseudo interpolation of video and screen data |
US5271070A (en) * | 1992-11-06 | 1993-12-14 | Xerox Corporation | Multi-dimensional error diffusion technique |
US5325211A (en) * | 1993-01-04 | 1994-06-28 | Xerox Corporation | Error diffusion with output and input based feedback |
GB9405723D0 (en) * | 1994-03-23 | 1994-05-11 | Crosfield Electronics Ltd | Method and apparatus for producing a digital half-tone representation of an image |
US5598204A (en) * | 1994-03-25 | 1997-01-28 | Xerox Corporation | Image halftoning system capable of producing additional gradations |
US6347159B1 (en) * | 1994-08-03 | 2002-02-12 | Xerox Corporation | Method and system for processing image information using screening and error diffusion |
US5528384A (en) * | 1994-08-03 | 1996-06-18 | Xerox Corporation | System and method for implementing fast high addressability error diffusion process |
US5710836A (en) * | 1994-12-01 | 1998-01-20 | Xerox Corporation | System and apparatus for tonal reproduction adjustment in an error diffusion process |
-
1997
- 1997-05-22 JP JP9132629A patent/JPH1093820A/ja not_active Withdrawn
- 1997-05-23 EP EP97303544A patent/EP0810772B1/de not_active Expired - Lifetime
- 1997-05-23 DE DE69738149T patent/DE69738149T2/de not_active Expired - Lifetime
- 1997-07-28 US US08/901,383 patent/US5768432A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5768432A (en) | 1998-06-16 |
EP0810772A2 (de) | 1997-12-03 |
JPH1093820A (ja) | 1998-04-10 |
EP0810772A3 (de) | 2003-07-16 |
DE69738149T2 (de) | 2008-06-12 |
EP0810772B1 (de) | 2007-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition |