DE69816710T2 - Digitaler Bildprozessor - Google Patents
Digitaler Bildprozessor Download PDFInfo
- Publication number
- DE69816710T2 DE69816710T2 DE69816710T DE69816710T DE69816710T2 DE 69816710 T2 DE69816710 T2 DE 69816710T2 DE 69816710 T DE69816710 T DE 69816710T DE 69816710 T DE69816710 T DE 69816710T DE 69816710 T2 DE69816710 T2 DE 69816710T2
- Authority
- DE
- Germany
- Prior art keywords
- segments
- halftone
- image
- continuous tone
- pixels
- 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
Links
- 238000009792 diffusion process Methods 0.000 claims description 50
- 238000012545 processing Methods 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 28
- 239000007787 solid Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 description 7
- 238000004422 calculation algorithm Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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)
- Image Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/862,236 US5892851A (en) | 1997-05-23 | 1997-05-23 | Parallelized error diffusion |
| US862236 | 1997-05-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69816710D1 DE69816710D1 (de) | 2003-09-04 |
| DE69816710T2 true DE69816710T2 (de) | 2004-04-15 |
Family
ID=25338008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69816710T Expired - Fee Related DE69816710T2 (de) | 1997-05-23 | 1998-05-20 | Digitaler Bildprozessor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5892851A (enExample) |
| EP (1) | EP0880275B1 (enExample) |
| JP (1) | JPH10334231A (enExample) |
| DE (1) | DE69816710T2 (enExample) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000152005A (ja) | 1998-11-17 | 2000-05-30 | Toshiba Corp | 画像処理装置 |
| JP2001136402A (ja) * | 1999-11-10 | 2001-05-18 | Minolta Co Ltd | 色変換装置 |
| US7460275B2 (en) * | 1999-12-02 | 2008-12-02 | Texas Instruments Incorporated | Odd/even error diffusion filter |
| US6850566B2 (en) | 2000-02-22 | 2005-02-01 | Intervideo, Inc. | Implementation of quantization for SIMD architecture |
| JP3995868B2 (ja) * | 2000-06-12 | 2007-10-24 | シャープ株式会社 | 誤差拡散演算装置 |
| JP3661624B2 (ja) * | 2000-10-06 | 2005-06-15 | セイコーエプソン株式会社 | 画像処理装置 |
| JP3720268B2 (ja) * | 2001-02-26 | 2005-11-24 | 株式会社メガチップス | 画像処理装置 |
| US7355747B2 (en) * | 2002-01-18 | 2008-04-08 | Hewlett-Packard Development Company, L.P. | System for improving the speed of data processing |
| US7312901B2 (en) * | 2002-03-15 | 2007-12-25 | Canon Kabushiki Kaisha | Image processing apparatus, image processing method, and program |
| US20040008382A1 (en) * | 2002-07-09 | 2004-01-15 | Barbalet Thomas Samuel | System and method for error diffusion screening with parallel processing |
| US7086712B2 (en) * | 2002-07-30 | 2006-08-08 | Hewlett-Packard Development Company, L.P | Halftoning method and apparatus |
| US7319549B2 (en) | 2003-03-27 | 2008-01-15 | Lexmark International, Inc. | Multiple weight error diffusion |
| JP2005012726A (ja) * | 2003-06-23 | 2005-01-13 | Konica Minolta Business Technologies Inc | 画像処理装置および画像処理方法 |
| KR100508936B1 (ko) * | 2003-08-12 | 2005-08-17 | 삼성에스디아이 주식회사 | 고속 동작이 가능한 오차 확산 방법 및 그 방법을 이용한플라즈마 디스플레이 패널 구동 장치 |
| US7450270B2 (en) * | 2004-01-16 | 2008-11-11 | Hewlett-Packard Development Company, L.P. | Image data processing methods, hard imaging devices, and articles of manufacture |
| JP4219887B2 (ja) * | 2004-12-28 | 2009-02-04 | 富士通マイクロエレクトロニクス株式会社 | 画像処理装置及び画像処理方法 |
| US7468814B2 (en) * | 2005-02-08 | 2008-12-23 | Astro-Med, Inc. | Algorithm for controlling half toning process |
| US8169667B2 (en) * | 2009-02-28 | 2012-05-01 | Hewlett-Packard Development Company, L.P. | Performing halftoning by plurality of halftoning mechanisms |
| KR101328793B1 (ko) * | 2009-11-23 | 2013-11-13 | 엘지디스플레이 주식회사 | 오차 확산 방법과 이를 이용한 액정표시장치 |
| US9007659B1 (en) | 2013-12-16 | 2015-04-14 | Xerox Corporation | Re-ordered error diffusion for fast implementation |
| US9262704B1 (en) | 2015-03-04 | 2016-02-16 | Xerox Corporation | Rendering images to lower bits per pixel formats using reduced numbers of registers |
| US9906687B2 (en) * | 2016-03-09 | 2018-02-27 | Xerox Corporation | Method and apparatus for starting an error diffusion method |
| JP7703876B2 (ja) * | 2021-03-29 | 2025-07-08 | セイコーエプソン株式会社 | 画像処理装置および画像処理方法 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5553165A (en) * | 1993-01-11 | 1996-09-03 | Canon, Inc. | Parallel error diffusion method and apparatus |
| US5519791A (en) * | 1993-01-11 | 1996-05-21 | Canon, Inc. | Block parallel error diffusion method and apparatus |
| NL9300684A (nl) * | 1993-04-22 | 1994-11-16 | Oce Nederland Bv | Werkwijze voor het halftonen van gedigitaliseerde grijswaardebeelden en beeldbewerkingsinrichting geschikt voor het uitvoeren van een dergelijke werkwijze. |
-
1997
- 1997-05-23 US US08/862,236 patent/US5892851A/en not_active Expired - Lifetime
-
1998
- 1998-05-14 JP JP10132083A patent/JPH10334231A/ja active Pending
- 1998-05-20 EP EP98304006A patent/EP0880275B1/en not_active Expired - Lifetime
- 1998-05-20 DE DE69816710T patent/DE69816710T2/de not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE69816710D1 (de) | 2003-09-04 |
| US5892851A (en) | 1999-04-06 |
| EP0880275A3 (en) | 1999-11-03 |
| JPH10334231A (ja) | 1998-12-18 |
| EP0880275B1 (en) | 2003-07-30 |
| EP0880275A2 (en) | 1998-11-25 |
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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: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE |
|
| 8339 | Ceased/non-payment of the annual fee |