MXPA05008945A - Metodo y dispositivo para conversion a escala de grises. - Google Patents

Metodo y dispositivo para conversion a escala de grises.

Info

Publication number
MXPA05008945A
MXPA05008945A MXPA05008945A MXPA05008945A MXPA05008945A MX PA05008945 A MXPA05008945 A MX PA05008945A MX PA05008945 A MXPA05008945 A MX PA05008945A MX PA05008945 A MXPA05008945 A MX PA05008945A MX PA05008945 A MXPA05008945 A MX PA05008945A
Authority
MX
Mexico
Prior art keywords
dithering
value
output value
transfer function
discrete input
Prior art date
Application number
MXPA05008945A
Other languages
English (en)
Inventor
Cedric Thebault
Original Assignee
Thomson Licensing
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.)
Filing date
Publication date
Application filed by Thomson Licensing filed Critical Thomson Licensing
Publication of MXPA05008945A publication Critical patent/MXPA05008945A/es

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2044—Display of intermediate tones using dithering
    • G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern
    • G09G3/2055—Display of intermediate tones using dithering with use of a spatial dither pattern the pattern being varied in time
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2007—Display of intermediate tones
    • G09G3/2044—Display of intermediate tones using dithering
    • G09G3/2051—Display of intermediate tones using dithering with use of a spatial dither pattern
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/2803—Display of gradations

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Image Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Picture Signal Circuits (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Analogue/Digital Conversion (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)

Abstract

Se puede reducir el ruido que se presenta cuando se aplica conversion (conversion a escala de grises o ajuste a la capacidad de presentacion preestablecida) en una funcion de transferencia. Por lo tanto, se asocian (S1) un primer valor de salida y un segundo valor de salida a un valor de entrada separado de la funcion de transferencia. En base en un numero dado de bitios de conversion se selecciona (S2) un valor intermedio que es igual a o que se encuentra entre el primer valor de salida y el segundo valor de salida y que utiliza el menor numero de bitios de conversion. Finalmente, se toma (S3) este valor intermedio como un valor de salida para el valor de entrada separado. De esta manera, se reduce en gran cantidad el ruido de conversion.
MXPA05008945A 2004-08-25 2005-08-23 Metodo y dispositivo para conversion a escala de grises. MXPA05008945A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04292087A EP1630772A1 (en) 2004-08-25 2004-08-25 Method and device for dithering

Publications (1)

Publication Number Publication Date
MXPA05008945A true MXPA05008945A (es) 2006-03-28

Family

ID=34931352

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05008945A MXPA05008945A (es) 2004-08-25 2005-08-23 Metodo y dispositivo para conversion a escala de grises.

Country Status (7)

Country Link
US (1) US20060044325A1 (es)
EP (1) EP1630772A1 (es)
JP (1) JP2006065329A (es)
KR (1) KR20060050616A (es)
CN (1) CN1741108A (es)
MX (1) MXPA05008945A (es)
TW (1) TW200608771A (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8339428B2 (en) * 2005-06-16 2012-12-25 Omnivision Technologies, Inc. Asynchronous display driving scheme and display
US8223179B2 (en) * 2007-07-27 2012-07-17 Omnivision Technologies, Inc. Display device and driving method based on the number of pixel rows in the display
US8228349B2 (en) * 2008-06-06 2012-07-24 Omnivision Technologies, Inc. Data dependent drive scheme and display
US8228350B2 (en) * 2008-06-06 2012-07-24 Omnivision Technologies, Inc. Data dependent drive scheme and display
US9024964B2 (en) * 2008-06-06 2015-05-05 Omnivision Technologies, Inc. System and method for dithering video data
JP2022109140A (ja) * 2021-01-14 2022-07-27 キヤノン株式会社 画像処理装置、画像表示システム、画像処理方法、プログラム、記憶媒体

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000023181A (ja) * 1998-07-03 2000-01-21 Hitachi Ltd カラー映像信号の表示装置
EP1136974A1 (en) * 2000-03-22 2001-09-26 Deutsche Thomson-Brandt Gmbh Method for processing video data for a display device
CN1185616C (zh) * 2000-10-03 2005-01-19 精工爱普生株式会社 图像处理方法和图像处理装置
US6909435B2 (en) * 2000-12-20 2005-06-21 Thomson Licensing S.A. Reduction of gamma correction contouring in liquid crystal on silicon (LCOS) displays
EP1256924B1 (en) * 2001-05-08 2013-09-25 Deutsche Thomson-Brandt Gmbh Method and apparatus for processing video pictures
EP1262942A1 (en) * 2001-06-01 2002-12-04 Deutsche Thomson-Brandt Gmbh Method and apparatus for processing video data for a display device
EP1353314A1 (en) * 2002-04-11 2003-10-15 Deutsche Thomson-Brandt Gmbh Method and apparatus for processing video pictures to improve the greyscale resolution of a display device

Also Published As

Publication number Publication date
EP1630772A1 (en) 2006-03-01
KR20060050616A (ko) 2006-05-19
CN1741108A (zh) 2006-03-01
US20060044325A1 (en) 2006-03-02
TW200608771A (en) 2006-03-01
JP2006065329A (ja) 2006-03-09

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Legal Events

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