CA2048882A1 - Image data processing method and apparatus - Google Patents

Image data processing method and apparatus

Info

Publication number
CA2048882A1
CA2048882A1 CA2048882A CA2048882A CA2048882A1 CA 2048882 A1 CA2048882 A1 CA 2048882A1 CA 2048882 A CA2048882 A CA 2048882A CA 2048882 A CA2048882 A CA 2048882A CA 2048882 A1 CA2048882 A1 CA 2048882A1
Authority
CA
Canada
Prior art keywords
image
image data
transform coefficient
quantized transform
dimensional quantized
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
CA2048882A
Other languages
French (fr)
Other versions
CA2048882C (en
Inventor
Masahiro Fukuda
Tsugio Noda
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.)
Fujitsu Ltd
Original Assignee
Masahiro Fukuda
Tsugio Noda
Fujitsu Limited
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 Masahiro Fukuda, Tsugio Noda, Fujitsu Limited filed Critical Masahiro Fukuda
Publication of CA2048882A1 publication Critical patent/CA2048882A1/en
Application granted granted Critical
Publication of CA2048882C publication Critical patent/CA2048882C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/24—Systems for the transmission of television signals using pulse code modulation
    • H04N7/52—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal
    • H04N7/54—Systems for transmission of a pulse code modulated video signal with one or more other pulse code modulated signals, e.g. an audio signal or a synchronizing signal the signals being synchronous
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/112—Selection of coding mode or of prediction mode according to a given display mode, e.g. for interlaced or progressive display mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/16—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter for a given display mode, e.g. for interlaced or progressive display mode
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/93—Run-length coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding

Abstract

An image data reconstructing method and apparatus, adaptive to both progressive and sequential image buildup modes, reconstructs an orthogonally transformed image by dequantizing transform coefficients decoded from coded data of a continuous tone image, by causing the transform coefficients to have a common data structure through an attachment of a dummy signal representing a zero value DC element.
The image data reconstructing method comprises a coded data decoding step, a common data structure one-dimensional quantized transform coefficient creating step, a one-to-two dimensional quantized transform coefficient transforming step, a dequantization threshold storing step, and a two-dimensional quantized transform coefficient dequantizing step. The image data reconstructing apparatus comprises a dummy signal generator for generating such dummy signals and a selector for selecting the dummy signals.
CA 2048882 1990-08-10 1991-08-09 Image data processing method and apparatus Expired - Fee Related CA2048882C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP02-213379 1990-08-10
JP21337990A JP2839943B2 (en) 1990-08-10 1990-08-10 Image data restoration method and apparatus

Publications (2)

Publication Number Publication Date
CA2048882A1 true CA2048882A1 (en) 1992-02-11
CA2048882C CA2048882C (en) 1996-11-12

Family

ID=16638223

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2048882 Expired - Fee Related CA2048882C (en) 1990-08-10 1991-08-09 Image data processing method and apparatus

Country Status (6)

Country Link
US (1) US5369502A (en)
EP (2) EP0470851B1 (en)
JP (1) JP2839943B2 (en)
KR (1) KR940009117B1 (en)
CA (1) CA2048882C (en)
DE (2) DE69132552T2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR0121328B1 (en) * 1991-12-13 1997-11-17 사또오 후미오 Digital video signal recording/reproducing apparatus
JPH06141185A (en) * 1992-10-26 1994-05-20 Nec Corp Picture thinning device
JP3007235B2 (en) * 1992-11-10 2000-02-07 富士写真フイルム株式会社 Variable length code decompression device and compression / decompression device
JPH08163594A (en) * 1994-12-12 1996-06-21 Sony Corp Moving image decoding method and moving image decoder
US6339614B1 (en) * 1996-12-20 2002-01-15 Intel Corporation Method and apparatus for quantizing and run length encoding transform coefficients in a video coder
JP4527322B2 (en) * 2001-07-25 2010-08-18 日本電気株式会社 Image search device, image search method, and image search program
US6714203B1 (en) * 2002-03-19 2004-03-30 Aechelon Technology, Inc. Data aware clustered architecture for an image generator
JP4486847B2 (en) * 2003-06-16 2010-06-23 オセ−テクノロジーズ・ベー・ヴエー Method and apparatus for creating halftone images from compressed images
JP4725127B2 (en) * 2005-02-16 2011-07-13 ソニー株式会社 Decoding apparatus and method, recording medium, and program
JP6210368B2 (en) * 2012-09-18 2017-10-11 サン パテント トラスト Image decoding method and image decoding apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2962722B2 (en) * 1988-02-22 1999-10-12 キヤノン株式会社 Decryption device
JPH0683442B2 (en) * 1988-05-16 1994-10-19 日本電気株式会社 Image signal coding method and apparatus
JPH02161874A (en) * 1988-05-16 1990-06-21 Nec Corp Picture signal coding system and device therefor
JP2826321B2 (en) * 1988-07-23 1998-11-18 日本電気株式会社 Orthogonal transform coding device
JPH0810935B2 (en) * 1988-12-09 1996-01-31 富士写真フイルム株式会社 Image signal compression encoding device and decompression reproducing device
CA2000156C (en) * 1989-02-14 1995-05-02 Kohtaro Asai Picture signal encoding and decoding apparatus
JP2571274B2 (en) * 1989-02-14 1997-01-16 富士通株式会社 Code data storage / readout method
JPH02274028A (en) * 1989-04-17 1990-11-08 Nec Corp Image transmission method
US5121216A (en) * 1989-07-19 1992-06-09 Bell Communications Research Adaptive transform coding of still images
JPH0832039B2 (en) * 1989-08-19 1996-03-27 日本ビクター株式会社 Variable length coding method and apparatus thereof
US5150432A (en) * 1990-03-26 1992-09-22 Kabushiki Kaisha Toshiba Apparatus for encoding/decoding video signals to improve quality of a specific region
KR930011694B1 (en) * 1991-03-27 1993-12-18 삼성전자 주식회사 Compressing method and apparatus for digital video data

Also Published As

Publication number Publication date
DE69132552D1 (en) 2001-04-12
JPH0495469A (en) 1992-03-27
US5369502A (en) 1994-11-29
KR940009117B1 (en) 1994-09-29
DE69132552T2 (en) 2001-06-21
EP0470851B1 (en) 1997-10-29
EP0786903A3 (en) 1997-10-29
EP0786903A2 (en) 1997-07-30
EP0470851A3 (en) 1993-06-09
KR920005014A (en) 1992-03-28
DE69128054T2 (en) 1998-02-26
EP0786903B1 (en) 2001-03-07
JP2839943B2 (en) 1998-12-24
CA2048882C (en) 1996-11-12
DE69128054D1 (en) 1997-12-04
EP0470851A2 (en) 1992-02-12

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