BR9902723A - Sistema para derivar um sinal de vìdeo de resolução reduzida decodificado a partir de um sinal de vìdeo de alta definição codificado - Google Patents

Sistema para derivar um sinal de vìdeo de resolução reduzida decodificado a partir de um sinal de vìdeo de alta definição codificado

Info

Publication number
BR9902723A
BR9902723A BR9902723-2A BR9902723A BR9902723A BR 9902723 A BR9902723 A BR 9902723A BR 9902723 A BR9902723 A BR 9902723A BR 9902723 A BR9902723 A BR 9902723A
Authority
BR
Brazil
Prior art keywords
video signal
pixel
resolution image
deriving
high definition
Prior art date
Application number
BR9902723-2A
Other languages
English (en)
Inventor
Mary Lafuze Comer
Eric Stephen Carlsgaard
Thomas Edward Horlander
Steven Anthony Barron
Original Assignee
Thompson Consumer Electronics
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 Thompson Consumer Electronics filed Critical Thompson Consumer Electronics
Publication of BR9902723A publication Critical patent/BR9902723A/pt

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
    • G06T3/4084—Scaling of whole images or parts thereof, e.g. expanding or contracting in the transform domain, e.g. fast Fourier transform [FFT] domain scaling
    • 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
    • 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
    • G06T3/4023—Scaling of whole images or parts thereof, e.g. expanding or contracting based on decimating pixels or lines of pixels; based on inserting pixels or lines of pixels
    • 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
    • H04N19/102—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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/10—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
    • H04N19/18—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 a set of transform coefficients
    • 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
    • H04N19/186—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 a colour or a chrominance component
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • 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
    • 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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
    • H04N5/45—Picture in picture, e.g. displaying simultaneously another television channel in a region of the screen

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

"SISTEMA PARA DERIVAR UM SINAL DE VìDEO DE RESOLUçãO REDUZIDA DECODIFICADO A PARTIR DE UM SINAL DE VìDEO DE ALTA DEFINIçãO CODIFICADO". Trata-se de um sistema para decodificar dados de imagem comprimidos na forma de blocos de pixels representando uma imagem de uma primeira resolução para proporcionar uma imagem de um segunda resolução reduzida que descomprime um bloco de pixel de imagem da primeira resolução. O sistema envolve selecionar (204) um subgrupo de coeficientes de domínio de freq³ência nos dados do bloco de pixel comprimido e processar os elementos (204, 205, 206, 208) do subgrupo de coeficientes para proporcionar os dados de pixel representando pixels compreendendo um subgrupo de pixel espacialmente distribuído no bloco de pixel na imagem de primeira resolução e exclui outros pixels do bloco de pixel. Os dados de pixel compreendendo os pixels espacialmente distribuídos é formatado (210) para proporcionar a imagem de segunda resolução reduzida.
BR9902723-2A 1998-07-14 1999-07-12 Sistema para derivar um sinal de vìdeo de resolução reduzida decodificado a partir de um sinal de vìdeo de alta definição codificado BR9902723A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9273998P 1998-07-14 1998-07-14

Publications (1)

Publication Number Publication Date
BR9902723A true BR9902723A (pt) 2000-03-08

Family

ID=22234871

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9902723-2A BR9902723A (pt) 1998-07-14 1999-07-12 Sistema para derivar um sinal de vìdeo de resolução reduzida decodificado a partir de um sinal de vìdeo de alta definição codificado

Country Status (8)

Country Link
EP (1) EP0973337A3 (pt)
JP (1) JP2000049617A (pt)
KR (1) KR20000011665A (pt)
CN (1) CN1246019A (pt)
BR (1) BR9902723A (pt)
SG (1) SG75179A1 (pt)
TR (1) TR199901639A2 (pt)
TW (1) TW417403B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002054777A1 (en) * 2000-12-28 2002-07-11 Koninklijke Philips Electronics N.V. Mpeg-2 down-sampled video generation
CA2470346C (en) 2002-01-07 2012-05-01 British Telecommunications Public Limited Company Method and apparatus for extracting pixel values
FR2894423A1 (fr) * 2005-12-05 2007-06-08 Thomson Licensing Sas Procede de prediction de donnees mouvement et de texture
JP2008270936A (ja) * 2007-04-17 2008-11-06 Nec Electronics Corp 画像出力装置および画像表示装置
CN104410857A (zh) * 2014-12-26 2015-03-11 广东威创视讯科技股份有限公司 一种图像显示控制方法及相关设备
GB2553785A (en) * 2016-09-13 2018-03-21 Sony Corp A decoder, encoder, computer program and method
CN112600565A (zh) * 2020-12-18 2021-04-02 上海集成电路研发中心有限公司 一种游程解码数字电路

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5262854A (en) * 1992-02-21 1993-11-16 Rca Thomson Licensing Corporation Lower resolution HDTV receivers
WO1993021731A1 (en) * 1992-04-13 1993-10-28 Sony Corporation Image reproducing apparatus
US5614952A (en) * 1994-10-11 1997-03-25 Hitachi America, Ltd. Digital video decoder for decoding digital high definition and/or digital standard definition television signals
WO1995015538A1 (en) * 1993-11-30 1995-06-08 Polaroid Corporation Coding methods and apparatus for scaling and filtering images using discrete cosine transforms
US5737019A (en) * 1996-01-29 1998-04-07 Matsushita Electric Corporation Of America Method and apparatus for changing resolution by direct DCT mapping

Also Published As

Publication number Publication date
TR199901639A2 (xx) 2000-02-21
TW417403B (en) 2001-01-01
EP0973337A2 (en) 2000-01-19
CN1246019A (zh) 2000-03-01
SG75179A1 (en) 2000-09-19
EP0973337A3 (en) 2003-01-15
KR20000011665A (ko) 2000-02-25
JP2000049617A (ja) 2000-02-18

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Legal Events

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