BR0304785A - Tela estocástica anisotrópica - Google Patents
Tela estocástica anisotrópicaInfo
- Publication number
- BR0304785A BR0304785A BR0304785-7A BR0304785A BR0304785A BR 0304785 A BR0304785 A BR 0304785A BR 0304785 A BR0304785 A BR 0304785A BR 0304785 A BR0304785 A BR 0304785A
- Authority
- BR
- Brazil
- Prior art keywords
- anisotropic
- anisotropic stochastic
- mesh
- stochastic
- pixel
- 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
- H04N1/40—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)
- Image Processing (AREA)
- Facsimile Image Signal Circuits (AREA)
- Color, Gradation (AREA)
Abstract
"TELA ESTOCáSTICA ANISOTRóPICA". A invenção refere-se a um sistema e um método para a formação de meio-tom de imagens em escala de cinza pela utilização de uma comparação pixel por pixel da imagem contra uma tela estocástica anisotrópica são mostrados. A tela estocástica anisotrópica compreende uma função de ruído não-branco, não-determinística a qual, quando limitada, é projetada para produzir padrões de ponto anisotrópicos, que têm um espectro de potência caracterizado como tendo componentes de freq³ência baixa desprezíveis e uma região de freq³ência alta, a qual tem uma ausência de picos dominantes mais fortes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/285,716 US7139101B2 (en) | 2002-10-31 | 2002-10-31 | Anisotropic stochastic screen |
Publications (1)
Publication Number | Publication Date |
---|---|
BR0304785A true BR0304785A (pt) | 2004-08-31 |
Family
ID=32175233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR0304785-7A BR0304785A (pt) | 2002-10-31 | 2003-10-29 | Tela estocástica anisotrópica |
Country Status (5)
Country | Link |
---|---|
US (1) | US7139101B2 (pt) |
EP (1) | EP1422925B1 (pt) |
JP (1) | JP4399235B2 (pt) |
BR (1) | BR0304785A (pt) |
CA (1) | CA2446631C (pt) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6930801B2 (en) * | 2000-02-03 | 2005-08-16 | Fuji Photo Film Co., Ltd. | Method of determining threshold arrangement for generating gradation image, and apparatus for generating gradation image data |
US7492480B2 (en) * | 2001-08-27 | 2009-02-17 | Phototype Engraving Company | System for halftone screen production |
US7382495B2 (en) * | 2003-12-12 | 2008-06-03 | Xerox Corporation | Reduction of differential gloss |
US7352493B2 (en) * | 2003-12-12 | 2008-04-01 | Xerox Corporation | Enhancement of glossmark images at low and high densities |
JP2006005926A (ja) * | 2004-06-14 | 2006-01-05 | Oce Technol Bv | ディザマスクを生成する方法 |
EP1608146B1 (en) * | 2004-06-14 | 2007-09-19 | Océ-Technologies B.V. | Method for generating a dither mask |
US7301675B2 (en) * | 2004-06-29 | 2007-11-27 | Xerox Corporation | Glossmark images with clear toner |
US7304770B2 (en) * | 2004-08-30 | 2007-12-04 | Xerox Corporation | Reduction of differential gloss with halftoned clear toner |
US7545997B2 (en) * | 2004-09-10 | 2009-06-09 | Xerox Corporation | Simulated high resolution using binary sub-sampling |
US7391537B2 (en) * | 2004-09-28 | 2008-06-24 | Xerox Corporation | User interface for differential gloss images |
US7324241B2 (en) * | 2004-09-29 | 2008-01-29 | Xerox Corporation | Variable data differential gloss images |
JP4039415B2 (ja) * | 2004-09-30 | 2008-01-30 | 富士フイルム株式会社 | ドット配置決定方法及び装置、閾値マトリクスの作成方法、プログラム並びに画像形成装置 |
US20060197992A1 (en) * | 2005-03-02 | 2006-09-07 | Xerox Corporation | Stochastic screens for rendering devices with high-addressability |
US8090141B2 (en) | 2006-01-31 | 2012-01-03 | Xerox Corporation | System and method to automatically establish preferred area for image-wise watermark |
JP4865475B2 (ja) * | 2006-09-25 | 2012-02-01 | 株式会社リコー | 画像表示データ生成システム、画像表示データ生成方法及び画像表示データ生成プログラム |
US20090034006A1 (en) * | 2007-08-03 | 2009-02-05 | Blondal Daniel J | Stochastic halftone images based on screening parameters |
US20090034008A1 (en) * | 2007-08-03 | 2009-02-05 | Lawrence Croft | Method for generating stochastic dither matrix |
JP4912270B2 (ja) * | 2007-10-16 | 2012-04-11 | キヤノン株式会社 | 画像処理装置及びその制御方法 |
CN101515364B (zh) * | 2009-03-26 | 2011-05-04 | 哈尔滨工业大学 | 基于最频值滤波的各向异性图像平滑方法 |
US8351085B2 (en) * | 2009-08-12 | 2013-01-08 | Xerox Corporation | Moire-free color halftoning methods, apparatus and systems |
US8467103B2 (en) * | 2009-08-12 | 2013-06-18 | Xerox Corporation | Moiré-free color halftoning methods, apparatus and systems |
US9787871B2 (en) | 2015-01-29 | 2017-10-10 | Xerox Corporation | Hidden Markov model generation of multi-plane random screens |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58114570A (ja) * | 1981-12-26 | 1983-07-07 | Canon Inc | 画像処理装置 |
US4918622A (en) * | 1988-11-16 | 1990-04-17 | Eastman Kodak Company | Electronic graphic arts screener |
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 |
US5111310A (en) * | 1990-12-04 | 1992-05-05 | Research Technologies Corporation, Inc. | Method and apparatus for halftone rendering of a gray scale image using a blue noise mask |
US5323247A (en) * | 1990-12-04 | 1994-06-21 | Research Corporation Technologies | Method and apparatus for halftoning and inverse halftoning and the transmission of such images |
DE69406741T2 (de) * | 1993-09-02 | 1998-06-18 | Agfa Gevaert Nv | Verfahren zur Herstellung eines frequenzmodulierten Rasterbildes |
US5673121A (en) * | 1996-06-17 | 1997-09-30 | Xerox Corporation | Stochastic halftoning screening method |
EP0963105A3 (en) | 1998-06-03 | 2001-01-24 | Canon Kabushiki Kaisha | Threshold matrix, and method and apparatus of reproducing gray level using threshold matrix |
US6351319B1 (en) * | 1998-12-18 | 2002-02-26 | Xerox Corporation | System and apparatus for single subpixel elimination with local error compensation in an high addressable error diffusion process |
US6606168B1 (en) * | 1999-03-31 | 2003-08-12 | 3M Innovative Properties Company | Narrow band, anisotropic stochastic halftone patterns and methods of creating and using the same |
US7277201B2 (en) * | 2003-05-28 | 2007-10-02 | Xerox Corporation | Systems and methods for designing digital anamorphic line screens |
-
2002
- 2002-10-31 US US10/285,716 patent/US7139101B2/en not_active Expired - Fee Related
-
2003
- 2003-10-24 CA CA002446631A patent/CA2446631C/en not_active Expired - Fee Related
- 2003-10-24 JP JP2003364217A patent/JP4399235B2/ja not_active Expired - Fee Related
- 2003-10-28 EP EP03256813.1A patent/EP1422925B1/en not_active Expired - Fee Related
- 2003-10-29 BR BR0304785-7A patent/BR0304785A/pt not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1422925A3 (en) | 2004-08-18 |
EP1422925A2 (en) | 2004-05-26 |
US7139101B2 (en) | 2006-11-21 |
EP1422925B1 (en) | 2016-04-06 |
CA2446631C (en) | 2008-07-15 |
JP4399235B2 (ja) | 2010-01-13 |
US20040085588A1 (en) | 2004-05-06 |
JP2004153824A (ja) | 2004-05-27 |
CA2446631A1 (en) | 2004-04-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application fees: application dismissed [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 12A ANUIDADE. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2330 DE 01-09-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |