BR7601403A - Processo e aparelho para criacao sobre uma superficie de uma reproducao de meio tom de uma imagem original - Google Patents
Processo e aparelho para criacao sobre uma superficie de uma reproducao de meio tom de uma imagem originalInfo
- Publication number
- BR7601403A BR7601403A BR7601403A BR7601403A BR7601403A BR 7601403 A BR7601403 A BR 7601403A BR 7601403 A BR7601403 A BR 7601403A BR 7601403 A BR7601403 A BR 7601403A BR 7601403 A BR7601403 A BR 7601403A
- Authority
- BR
- Brazil
- Prior art keywords
- creation
- original image
- halftone reproduction
- halftone
- reproduction
- 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
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
- H04N1/19505—Scanning picture elements spaced apart from one another in at least one direction
-
- 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
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
- H04N1/19505—Scanning picture elements spaced apart from one another in at least one direction
- H04N1/19521—Arrangements for moving the elements of the array relative to the scanned image or vice versa
- H04N1/19526—Optical means
- H04N1/19531—Reflecting elements
-
- 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
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/19—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays
- H04N1/195—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using multi-element arrays the array comprising a two-dimensional array or a combination of two-dimensional arrays
- H04N1/19505—Scanning picture elements spaced apart from one another in at least one direction
- H04N1/19521—Arrangements for moving the elements of the array relative to the scanned image or vice versa
- H04N1/19526—Optical means
- H04N1/19552—Rotation of optical elements
- H04N1/19563—Rotation of optical elements about an axis perpendicular to the optical axis
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Dot-Matrix Printers And Others (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Image Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/558,594 US4051536A (en) | 1975-03-14 | 1975-03-14 | Electronic halftone imaging system |
Publications (1)
Publication Number | Publication Date |
---|---|
BR7601403A true BR7601403A (pt) | 1976-09-14 |
Family
ID=24230157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR7601403A BR7601403A (pt) | 1975-03-14 | 1976-03-09 | Processo e aparelho para criacao sobre uma superficie de uma reproducao de meio tom de uma imagem original |
Country Status (10)
Country | Link |
---|---|
US (1) | US4051536A (pt) |
JP (1) | JPS5952423B2 (pt) |
BR (1) | BR7601403A (pt) |
CA (1) | CA1057201A (pt) |
CH (1) | CH608632A5 (pt) |
DE (1) | DE2608134C2 (pt) |
FR (1) | FR2304233A1 (pt) |
GB (1) | GB1536000A (pt) |
NL (1) | NL7602580A (pt) |
SU (1) | SU665831A3 (pt) |
Families Citing this family (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4205350A (en) * | 1977-03-10 | 1980-05-27 | Xerox Corporation | Reproduction scanning system having intermediate storage between input and output scanning stations |
US4169275A (en) * | 1977-03-10 | 1979-09-25 | Xerox Corporation | Reproduction scanning system having intermediate storage between input and output scanning stations |
US4302782A (en) * | 1977-03-10 | 1981-11-24 | Xerox Corporation | Reproduction scanning system having intermediate storage between input and output scanning stations |
US4185304A (en) * | 1977-07-07 | 1980-01-22 | Xerox Corporation | Electronic halftone screening |
US4149194A (en) * | 1977-07-07 | 1979-04-10 | Xerox Corporation | Variable angle electronic halftone screening |
CA1142858A (en) * | 1978-07-14 | 1983-03-15 | Robert W. Waller | Method and apparatus for forming high resolution halftone images |
US4196452A (en) * | 1978-12-01 | 1980-04-01 | Xerox Corporation | Tone error control for image contour removal |
US4196453A (en) * | 1978-12-01 | 1980-04-01 | Xerox Corporation | Image screening system |
US4196454A (en) * | 1978-12-04 | 1980-04-01 | Xerox Corporation | Tone error control for relatively large image areas |
US4468706A (en) * | 1979-02-13 | 1984-08-28 | Coulter Systems Corporation | Imaging by varying the placement of elements in the pixels |
DE3064518D1 (en) * | 1979-04-16 | 1983-09-15 | Eastman Kodak Co | Method of improving maximum density and tonal range of electrographic images and an electrographic copying apparatus using the method |
US4246614A (en) * | 1979-12-26 | 1981-01-20 | Xerox Corporation | Binary graphic printer system having an electronic screen with shift control suited for rescreening |
DE3049369A1 (de) * | 1979-12-29 | 1981-09-17 | Canon K.K., Tokyo | Bildreproduktionsgeraet |
JPS5698078A (en) * | 1979-12-29 | 1981-08-07 | Canon Inc | Image reproducer |
US4408868A (en) * | 1980-04-11 | 1983-10-11 | Coulter Systems Corporation | Digital plate maker system and method |
US4439789A (en) * | 1980-04-11 | 1984-03-27 | Coulter Systems Corporation | Binary scan system |
DE3030648C2 (de) * | 1980-08-13 | 1983-11-10 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und Anordnung zum Darstellen von Grauwerten bei einer Faksimile-Übertragung |
EP0050348A3 (en) * | 1980-10-17 | 1982-12-15 | Autologic S.A. | Photocomposing machine and method |
US4403258A (en) * | 1980-11-07 | 1983-09-06 | Ringier & Co., Ag. | Method and device for sequentially imaging an original |
JPS57120937A (en) * | 1981-01-21 | 1982-07-28 | Dainippon Screen Mfg Co Ltd | Formation of halftone plate image |
JPS57125577A (en) * | 1981-01-29 | 1982-08-04 | Ricoh Co Ltd | Binarized tonal processing method for analog video signal |
JPS57155542A (en) * | 1981-03-23 | 1982-09-25 | Dainippon Printing Co Ltd | Formation of halftone dot for printing |
US4475130A (en) * | 1981-05-19 | 1984-10-02 | Datacopy Corporation | Method and means for the real-time storage of images captured by an electronic scanning camera |
US4442544A (en) * | 1981-07-09 | 1984-04-10 | Xerox Corporation | Adaptive thresholder |
US5666444A (en) * | 1982-04-06 | 1997-09-09 | Canon Kabushiki Kaisha | Image processing apparatus |
GB2120896B (en) * | 1982-04-06 | 1987-01-28 | Canon Kk | Half-tone facsimile system |
DE3274710D1 (en) * | 1982-09-28 | 1987-01-22 | Delta Scan Inc | Method and apparatus for producing images on radiation sensitive recording mediums |
JPS5970078A (ja) * | 1982-10-15 | 1984-04-20 | Fuji Photo Film Co Ltd | 画像処理方法 |
GB2129652B (en) * | 1982-10-27 | 1986-06-04 | Matsushita Electric Ind Co Ltd | Method and apparatus for processing image signal |
JPS59122080A (ja) * | 1982-12-27 | 1984-07-14 | Leo Giken:Kk | 網点画像の発生方法 |
NL8320205A (nl) * | 1983-06-03 | 1985-05-01 | Gravure Res Inst | Rastergravure-graveersysteem voor elektromechanische graveerinrichtingen. |
JPS60132465A (ja) * | 1983-10-28 | 1985-07-15 | Dainippon Screen Mfg Co Ltd | 網点形成方法 |
US4633327A (en) * | 1983-11-10 | 1986-12-30 | Xerox Corporation | Enhancement halftoning |
US4651287A (en) * | 1984-06-14 | 1987-03-17 | Tsao Sherman H | Digital image processing algorithm for output devices with discrete halftone gray scale capability |
GB2163923B (en) * | 1984-08-30 | 1988-07-13 | Ricoh Kk | Color electrophotographic copying process |
US4797943A (en) * | 1985-11-29 | 1989-01-10 | Ricoh Company, Ltd. | Gradation data processing apparatus |
US4878126A (en) * | 1986-02-19 | 1989-10-31 | Canon Kabushiki Kaisha | Imgae processing apparatus |
US4730221A (en) * | 1986-10-16 | 1988-03-08 | Xerox Corporation | Screening techniques by identification of constant grey components |
US4899214A (en) * | 1988-09-02 | 1990-02-06 | Itek Graphic Corp. | Low cost color scanner |
US4916530A (en) * | 1988-09-02 | 1990-04-10 | Itek Graphix Corp. | High resolution halftone dot generator system including LED array |
US4942480A (en) * | 1988-09-06 | 1990-07-17 | Nynex Corporation | Reproduction of halftone original with moire reduction and tone adjustment |
US4918622A (en) * | 1988-11-16 | 1990-04-17 | Eastman Kodak Company | Electronic graphic arts screener |
US4916545A (en) * | 1988-11-16 | 1990-04-10 | Eastman Kodak Company | Electronic graphic arts screener that suppresses Moire patterns using pseudo-random font selection |
US4977458A (en) * | 1988-11-16 | 1990-12-11 | Eastman Kodak Company | Apparatus for addressing a font to suppress Moire patterns occurring thereby and a method for use therein |
US4891714A (en) * | 1989-04-24 | 1990-01-02 | Eastman Kodak Company | Apparatus for non-linear error diffusion thresholding of multilevel video images |
US4926267A (en) * | 1989-05-26 | 1990-05-15 | Nynex Corporation | Reproduction of halftone original with reduced moire |
US5274473A (en) * | 1989-08-04 | 1993-12-28 | Intergraph Corporation | Rapid variable angle digital screening |
JP2651493B2 (ja) * | 1990-11-21 | 1997-09-10 | スターリング ドライ イメイジング,インコーポレイテッド | 印刷装置及び方法 |
US5170261A (en) * | 1990-11-21 | 1992-12-08 | Polaroid Corporation | Printing method |
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 |
DE4104467A1 (de) * | 1991-02-14 | 1992-08-20 | Hell Ag Linotype | Verfahren und anordnung zur erzeugung von signalen, welche dem informationsgehalt von gerasterten bildern entsprechen |
US5276535A (en) * | 1991-12-24 | 1994-01-04 | Levien Raphael L | Method and apparatus for halftoning of images using grayscale error diffusion |
US5243443A (en) * | 1991-12-06 | 1993-09-07 | Xerox Corporation | Halftoning with error feedback and image dependent enhancement |
US5331429A (en) * | 1992-02-07 | 1994-07-19 | Levien Raphael L | Digital generation of halftone images with error diffusion and frequency matched periodic screen rulings |
US5321525A (en) * | 1992-12-14 | 1994-06-14 | Xerox Corporation | Clustered halftoning with dot-to-dot error diffusion |
US5325211A (en) * | 1993-01-04 | 1994-06-28 | Xerox Corporation | Error diffusion with output and input based feedback |
JP3241157B2 (ja) * | 1993-04-19 | 2001-12-25 | 富士写真フイルム株式会社 | 網点画像データ補正方法および補正機能を有する画像処理装置 |
US5523849A (en) * | 1993-06-17 | 1996-06-04 | Eastman Kodak Company | Optimizing edge enhancement for electrographic color prints |
JPH07304209A (ja) * | 1994-05-11 | 1995-11-21 | Tec Corp | 電子写真装置 |
US5426519A (en) * | 1994-08-25 | 1995-06-20 | Xerox Corporation | Method and apparatus for implementing accurate angle screens |
US5493416A (en) * | 1994-10-31 | 1996-02-20 | Xerox Corporation | Method combining error diffusion and traditional halftoning with arbitrary screen orientation |
JPH09130605A (ja) * | 1995-10-31 | 1997-05-16 | Fuji Photo Film Co Ltd | 網点画像出力方法およびその装置 |
US5668638A (en) * | 1996-06-27 | 1997-09-16 | Xerox Corporation | Error diffusion method with symmetric enhancement |
US7085017B1 (en) | 2001-08-03 | 2006-08-01 | Elesys, Inc. | Polar halftone methods for radial printing |
US6226103B1 (en) | 1998-09-02 | 2001-05-01 | Xerox Corporation | Method of producing spot colors appearance with process color printing |
EP1079601B1 (en) | 1999-03-05 | 2008-06-18 | Seiko Epson Corporation | Image data correcting device, image data correcting method, medium on which image data correcting program is recorded |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH332844A (de) * | 1954-11-10 | 1958-09-30 | Hell Rudolf Dr Ing Fa | Verfahren zur Herstellung von gerasterten Klischees mit automatischer Tonwertkorrektur und Vorrichtung zur Durchführung des Verfahrens |
DE1039842B (de) * | 1957-08-14 | 1958-09-25 | Rudol Hell Dr Ing | Verfahren zur kuenstlichen Kontraststeigerung an Tonwertspruengen und Konturen in mittels elektronischer Klischier-maschinen herzustellenden Klischees |
US3294896A (en) * | 1963-07-24 | 1966-12-27 | Bell Telephone Labor Inc | Digital encoder for facsimile transmission |
FR1541018A (fr) * | 1966-08-01 | 1968-10-04 | Xerox Corp | Système de transmission de fac-similé |
DE1772367C3 (de) * | 1968-05-04 | 1974-10-31 | Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel | Verfahren zur gerasterten Reproduktion von Halbtonbildern |
US3604846A (en) * | 1969-03-03 | 1971-09-14 | Mead Corp | Method and system for reconstruction of half-tone images |
-
1975
- 1975-03-14 US US05/558,594 patent/US4051536A/en not_active Expired - Lifetime
-
1976
- 1976-02-10 CA CA245,368A patent/CA1057201A/en not_active Expired
- 1976-02-27 DE DE2608134A patent/DE2608134C2/de not_active Expired
- 1976-03-03 CH CH266576A patent/CH608632A5/xx not_active IP Right Cessation
- 1976-03-03 SU SU762329603A patent/SU665831A3/ru active
- 1976-03-08 JP JP51024944A patent/JPS5952423B2/ja not_active Expired
- 1976-03-09 BR BR7601403A patent/BR7601403A/pt unknown
- 1976-03-11 GB GB9773/76A patent/GB1536000A/en not_active Expired
- 1976-03-11 NL NL7602580A patent/NL7602580A/xx not_active Application Discontinuation
- 1976-03-12 FR FR7607266A patent/FR2304233A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
DE2608134A1 (de) | 1976-09-30 |
CA1057201A (en) | 1979-06-26 |
FR2304233A1 (fr) | 1976-10-08 |
JPS51114133A (en) | 1976-10-07 |
US4051536A (en) | 1977-09-27 |
CH608632A5 (pt) | 1979-01-15 |
FR2304233B1 (pt) | 1982-05-14 |
GB1536000A (en) | 1978-12-13 |
SU665831A3 (en) | 1979-05-30 |
NL7602580A (nl) | 1976-09-16 |
DE2608134C2 (de) | 1984-12-13 |
JPS5952423B2 (ja) | 1984-12-19 |
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