WO2002048960A3 - Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering - Google Patents

Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering Download PDF

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Publication number
WO2002048960A3
WO2002048960A3 PCT/JP2001/010915 JP0110915W WO0248960A3 WO 2002048960 A3 WO2002048960 A3 WO 2002048960A3 JP 0110915 W JP0110915 W JP 0110915W WO 0248960 A3 WO0248960 A3 WO 0248960A3
Authority
WO
WIPO (PCT)
Prior art keywords
sub
resolution
sampling
images
systems
Prior art date
Application number
PCT/JP2001/010915
Other languages
French (fr)
Other versions
WO2002048960A2 (en
Inventor
Scott J Daly
Rajesh Reddy K Kovvuri
Original Assignee
Sharp Kk
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
Priority claimed from US09/735,454 external-priority patent/US6775420B2/en
Priority claimed from US09/735,425 external-priority patent/US6807319B2/en
Priority claimed from US09/735,424 external-priority patent/US6608632B2/en
Application filed by Sharp Kk filed Critical Sharp Kk
Priority to EP01270858A priority Critical patent/EP1350221A2/en
Priority to JP2002550598A priority patent/JP2004524729A/en
Priority to KR1020037007876A priority patent/KR100597156B1/en
Publication of WO2002048960A2 publication Critical patent/WO2002048960A2/en
Publication of WO2002048960A3 publication Critical patent/WO2002048960A3/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T3/00—Geometric image transformations in the plane of the image
    • G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
    • G06T3/4015—Image demosaicing, e.g. colour filter arrays [CFA] or Bayer patterns
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/39—Control of the bit-mapped memory
    • G09G5/395—Arrangements specially adapted for transferring the contents of the bit-mapped memory to the screen
    • 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
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0414—Vertical resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0421—Horizontal resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0428—Gradation resolution change
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/04—Changes in size, position or resolution of an image
    • G09G2340/0457—Improvement of perceived resolution by subpixel rendering
    • 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
    • G09G3/2059—Display of intermediate tones using error diffusion
    • 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
    • G09G3/2074—Display of intermediate tones using sub-pixels

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Image Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Color Image Communication Systems (AREA)
  • Color Television Systems (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

The present invention provides a method and an apparatus for converting a color image of a higher-resolution to an image of a lower-resolution. With the method of the present invention, based on characteristics of spatial frequency responses of the human visual system, a lower-resolution image (116) is formed by separating a higher-resolution image (72) into a luminance channel (76) and chrominance channels (98 & 100) so as to carry out suitable sampling and filtering for each of the luminance channel (76) and the chrominance channels (98 & 100), then by combing the luminance channel (86) and the chrominance channels (111 & 114) after the sampling. As to the chrominance channels (98 & 100), traditional sub-sampling (101 & 103) is carried out to avoid chromatic aliasing, while sub-pixel sampling (80) is performed for the luminance channel (76) to improve resolution of luminance component.
PCT/JP2001/010915 2000-12-12 2001-12-12 Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering WO2002048960A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01270858A EP1350221A2 (en) 2000-12-12 2001-12-12 Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering
JP2002550598A JP2004524729A (en) 2000-12-12 2001-12-12 Display resolution enhancement method and system using sub-pixel sampling and visual distortion filtering
KR1020037007876A KR100597156B1 (en) 2000-12-12 2001-12-12 Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US09/735,454 2000-12-12
US09/735,454 US6775420B2 (en) 2000-06-12 2000-12-12 Methods and systems for improving display resolution using sub-pixel sampling and visual error compensation
US09/735,424 2000-12-12
US09/735,425 2000-12-12
US09/735,425 US6807319B2 (en) 2000-06-12 2000-12-12 Methods and systems for improving display resolution in achromatic images using sub-pixel sampling and visual error filtering
US09/735,424 US6608632B2 (en) 2000-06-12 2000-12-12 Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering

Publications (2)

Publication Number Publication Date
WO2002048960A2 WO2002048960A2 (en) 2002-06-20
WO2002048960A3 true WO2002048960A3 (en) 2003-07-24

Family

ID=27419197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/010915 WO2002048960A2 (en) 2000-12-12 2001-12-12 Methods and systems for improving display resolution in images using sub-pixel sampling and visual error filtering

Country Status (5)

Country Link
EP (1) EP1350221A2 (en)
JP (1) JP2004524729A (en)
CN (1) CN1267882C (en)
TW (1) TW558899B (en)
WO (1) WO2002048960A2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7110012B2 (en) 2000-06-12 2006-09-19 Sharp Laboratories Of America, Inc. System for improving display resolution
US6927804B2 (en) * 2002-09-09 2005-08-09 Eastman Kodak Company Reducing color aliasing artifacts from color digital images
US7084906B2 (en) * 2002-10-15 2006-08-01 Eastman Kodak Company Reducing computation time in removing color aliasing artifacts from color digital images
JP4813787B2 (en) * 2003-10-17 2011-11-09 パナソニック株式会社 Image processing apparatus and method
US7787702B2 (en) 2005-05-20 2010-08-31 Samsung Electronics Co., Ltd. Multiprimary color subpixel rendering with metameric filtering
KR101364076B1 (en) * 2005-11-09 2014-02-26 코닌클리케 필립스 엔.브이. A method and apparatus processing pixel signals for driving a display and a display using the same
EP2439727B1 (en) 2006-06-02 2017-11-29 Samsung Display Co., Ltd. Display apparatus having multiple segmented backlight comprising a plurality of light guides
US7592996B2 (en) 2006-06-02 2009-09-22 Samsung Electronics Co., Ltd. Multiprimary color display with dynamic gamut mapping
JP2009141430A (en) * 2007-12-03 2009-06-25 Murata Mach Ltd Image processor
US8724928B2 (en) 2009-08-31 2014-05-13 Intellectual Ventures Fund 83 Llc Using captured high and low resolution images
JP4861523B2 (en) * 2010-03-15 2012-01-25 シャープ株式会社 Display device and television receiver
EP3275190B1 (en) 2015-03-25 2024-04-17 Dolby Laboratories Licensing Corporation Chroma subsampling and gamut reshaping
CN106470335B (en) * 2015-08-17 2019-05-17 西安诺瓦电子科技有限公司 Image processing method and image display method based on sub-pix sampling

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170152A (en) * 1990-12-14 1992-12-08 Hewlett-Packard Company Luminance balanced encoder
EP0772179A2 (en) * 1995-10-31 1997-05-07 Cirrus Logic, Inc. Method and apparatus for determining chrominance components
WO2000021067A1 (en) * 1998-10-07 2000-04-13 Microsoft Corporation Methods and apparatus for detecting and reducing color artifacts in images

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5170152A (en) * 1990-12-14 1992-12-08 Hewlett-Packard Company Luminance balanced encoder
EP0772179A2 (en) * 1995-10-31 1997-05-07 Cirrus Logic, Inc. Method and apparatus for determining chrominance components
WO2000021067A1 (en) * 1998-10-07 2000-04-13 Microsoft Corporation Methods and apparatus for detecting and reducing color artifacts in images

Also Published As

Publication number Publication date
CN1489760A (en) 2004-04-14
WO2002048960A2 (en) 2002-06-20
CN1267882C (en) 2006-08-02
TW558899B (en) 2003-10-21
EP1350221A2 (en) 2003-10-08
JP2004524729A (en) 2004-08-12

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