CA2312983A1 - Continuous gradation compression and expansion of an image or acoustics data based on a polynomial approximation - Google Patents

Continuous gradation compression and expansion of an image or acoustics data based on a polynomial approximation Download PDF

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Publication number
CA2312983A1
CA2312983A1 CA002312983A CA2312983A CA2312983A1 CA 2312983 A1 CA2312983 A1 CA 2312983A1 CA 002312983 A CA002312983 A CA 002312983A CA 2312983 A CA2312983 A CA 2312983A CA 2312983 A1 CA2312983 A1 CA 2312983A1
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Canada
Prior art keywords
expansion
image
compression
data based
unit
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.)
Granted
Application number
CA002312983A
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French (fr)
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CA2312983C (en
Inventor
Yoshiro Nomura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Force Tech Corp
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Force Technology Corp.
Yoshiro Nomura
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 Force Technology Corp., Yoshiro Nomura filed Critical Force Technology Corp.
Publication of CA2312983A1 publication Critical patent/CA2312983A1/en
Application granted granted Critical
Publication of CA2312983C publication Critical patent/CA2312983C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/001—Model-based coding, e.g. wire frame
    • 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
    • H04N1/41—Bandwidth or redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
    • H04N9/69—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits for modifying the colour signals by gamma correction

Abstract

An image processor by which an excellent image can be obtained even after compression and expansion. A compression circuit (12) has a line scanning unit (22) which divides original image data into color data groups in relation to respective pixels, a line compression unit (24) which expresses the value (y) of the color data corresponding to each pixel position in a predetermined section with a polynominal: y = ax3 + bx2 + cx + d wherein (x) denotes the pixel position which is a variable and a parameter calculation unit (26) which obtains the parameters of the polynominal. An expansion circuit (14) has a line expansion unit (34) which obtains the color data values corresponding to the respective pixel positions in accordance with the received parameters and pixel positions. The restored image data are outputted to a display device, etc.
CA 2312983 1997-12-05 1998-11-05 Continuous gradation compression and expansion of an image or acoustics data based on a polynomial approximation Expired - Fee Related CA2312983C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JPH09-335633 1997-12-05
JP33563397 1997-12-05
PCT/JP1998/004982 WO1999030483A1 (en) 1997-12-05 1998-11-05 Continuous gradation compression device and method, continuous gradation expansion device and method, data processor and device and memory medium in which programs for executing the programs

Publications (2)

Publication Number Publication Date
CA2312983A1 true CA2312983A1 (en) 1999-06-17
CA2312983C CA2312983C (en) 2008-06-03

Family

ID=18290786

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2312983 Expired - Fee Related CA2312983C (en) 1997-12-05 1998-11-05 Continuous gradation compression and expansion of an image or acoustics data based on a polynomial approximation

Country Status (8)

Country Link
US (1) US6795581B1 (en)
EP (1) EP1035728B1 (en)
JP (1) JP3966691B2 (en)
AU (1) AU9761798A (en)
CA (1) CA2312983C (en)
DE (1) DE69826146D1 (en)
TW (1) TW409210B (en)
WO (1) WO1999030483A1 (en)

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JP4026491B2 (en) * 2002-12-13 2007-12-26 ソニー株式会社 Image signal processing apparatus, image signal processing method, program, and medium
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US9418450B2 (en) 2006-08-31 2016-08-16 Ati Technologies Ulc Texture compression techniques
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KR100864278B1 (en) * 2007-06-22 2008-10-17 매그나칩 반도체 유한회사 Apparatus to processing data
TWI397891B (en) * 2008-03-26 2013-06-01 Etron Technology Inc Method for driving a pixel by generating an over-driving grey-level value and driver thereof
US20110188583A1 (en) * 2008-09-04 2011-08-04 Japan Science And Technology Agency Picture signal conversion system
CN102187665A (en) * 2008-09-04 2011-09-14 独立行政法人科学技术振兴机构 Frame rate converting apparatus and corresponding point estimating apparatus, corresponding point estimating method and corresponding point estimating program
JP2010160304A (en) * 2009-01-08 2010-07-22 Seiko Epson Corp Image data processing method and image display system
JP5321275B2 (en) * 2009-06-18 2013-10-23 船井電機株式会社 Video display system, video output device, and video playback device
JP5544996B2 (en) * 2010-04-09 2014-07-09 ソニー株式会社 Image processing apparatus and method
US8655065B2 (en) * 2010-10-14 2014-02-18 Chimei Innolux Corporation Image processing device using adding module for adding error diffusion value or error diffusion seed
TWI490457B (en) * 2010-10-20 2015-07-01 Hon Hai Prec Ind Co Ltd System and method for detecting light intensity
TWI502550B (en) * 2012-03-30 2015-10-01 Nation United University Differential layered image compression method
TWI479134B (en) * 2013-04-26 2015-04-01 Chroma Ate Inc Two - dimensional timing type colorimeter detection method and the colorimeter
EP3087743A4 (en) * 2013-12-27 2017-02-22 HFI Innovation Inc. Method and apparatus for major color index map coding
EP3841493A4 (en) * 2018-10-01 2022-05-18 Sandbox Semiconductor, Inc. Visualization of data for optimization of multidimensional processes

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Also Published As

Publication number Publication date
EP1035728A4 (en) 2002-08-07
EP1035728B1 (en) 2004-09-08
TW409210B (en) 2000-10-21
JP3966691B2 (en) 2007-08-29
EP1035728A1 (en) 2000-09-13
US6795581B1 (en) 2004-09-21
DE69826146D1 (en) 2004-10-14
WO1999030483A1 (en) 1999-06-17
AU9761798A (en) 1999-06-28
CA2312983C (en) 2008-06-03

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