BR112012017955A2 - "codificador de imagem e decodificador de imagem" - Google Patents

"codificador de imagem e decodificador de imagem"

Info

Publication number
BR112012017955A2
BR112012017955A2 BR112012017955A BR112012017955A BR112012017955A2 BR 112012017955 A2 BR112012017955 A2 BR 112012017955A2 BR 112012017955 A BR112012017955 A BR 112012017955A BR 112012017955 A BR112012017955 A BR 112012017955A BR 112012017955 A2 BR112012017955 A2 BR 112012017955A2
Authority
BR
Brazil
Prior art keywords
image
value
integral
floating point
encoder
Prior art date
Application number
BR112012017955A
Other languages
English (en)
Inventor
Thoma Herbert
Motra Ajit
Original Assignee
Fraunhofer Ges Forschung
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 Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of BR112012017955A2 publication Critical patent/BR112012017955A2/pt

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/007—Transform coding, e.g. discrete cosine transform
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/14—Conversion to or from non-weighted codes
    • H03M7/24—Conversion to or from floating-point codes
    • 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
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • 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
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H04N19/64—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission
    • H04N19/647—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission using significance based coding, e.g. Embedded Zerotrees of Wavelets [EZW] or Set Partitioning in Hierarchical Trees [SPIHT]

Landscapes

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

Abstract

CODIFICADOR DE IMAGEM E DECODIFICADOR DE IMAGEM. Um codificador de imagem compreende um determinador do valor extremo, um conversor de ponto flutuante para integral e um codificador. O determinador do valor extremo determina um valor minimo e um valor máximo de um valor de imagem do ponto flutuante de cada pixel de uma imagem, uma imagem ou um grupo de imagens. O conversor de ponto flutuante para integral mapeia o valor da imagem do ponto flutuante de cada pixel para um valor de imagem integral, em que cada valor de imagem integral reside na faixa predefinida de valores de imagem integral. O valor de imagem do ponto flutuante minimo determinado é mapeado para um valor de imagem integral minimo da faixa predefinida dos valores de imagem integrais e o valor de imagem do ponto flutuante máximo determinado é mapeado para um valor de imagem integral máximo da faixa predefinida dos valores de imagem integrais. Ainda, codificador codifica o valor de imagem integral de cada pixel para obter e fornecer dados de imagem codificados de parte da imagem, de imagem ou do grupo de imagens.
BR112012017955A 2010-01-19 2010-12-30 "codificador de imagem e decodificador de imagem" BR112012017955A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP10151074A EP2360926A1 (en) 2010-01-19 2010-01-19 Image encoder and image decoder
PCT/EP2010/070915 WO2011088960A1 (en) 2010-01-19 2010-12-30 Image encoder and image decoder

Publications (1)

Publication Number Publication Date
BR112012017955A2 true BR112012017955A2 (pt) 2017-10-03

Family

ID=42232636

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112012017955A BR112012017955A2 (pt) 2010-01-19 2010-12-30 "codificador de imagem e decodificador de imagem"

Country Status (7)

Country Link
US (1) US9552652B2 (pt)
EP (2) EP2360926A1 (pt)
JP (1) JP5608245B2 (pt)
CN (1) CN102812705B (pt)
BR (1) BR112012017955A2 (pt)
RU (1) RU2571612C2 (pt)
WO (1) WO2011088960A1 (pt)

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EP2360926A1 (en) * 2010-01-19 2011-08-24 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Image encoder and image decoder
US9167261B2 (en) 2011-11-07 2015-10-20 Sharp Laboratories Of America, Inc. Video decoder with constrained dynamic range
US20130114685A1 (en) * 2011-11-07 2013-05-09 Sharp Laboratories Of America, Inc. Video decoder with constrained dynamic range
EP2804378A1 (en) 2013-05-14 2014-11-19 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Chroma subsampling
GB201313292D0 (en) * 2013-07-25 2013-09-11 Bifold Fluidpower Ltd Graphical data representation
WO2015062942A1 (en) * 2013-10-31 2015-05-07 Thomson Licensing Method and device for predictive coding/decoding of a group of pictures of a sequence of images with conversion of the dynamic of the values of the pixels
CN103729864A (zh) * 2013-12-18 2014-04-16 珠海金山网络游戏科技有限公司 一种三维模型的压缩存储方法及系统
CN111246050B (zh) * 2014-02-25 2022-10-28 苹果公司 用于视频数据处理的系统、装置和方法
JP6635312B2 (ja) * 2014-07-03 2020-01-22 ソニー株式会社 画像処理装置および方法
US9936199B2 (en) * 2014-09-26 2018-04-03 Dolby Laboratories Licensing Corporation Encoding and decoding perceptually-quantized video content
EP3220645A1 (en) 2016-03-18 2017-09-20 Thomson Licensing A method and a device for encoding a high dynamic range picture, corresponding decoding method and decoding device
CN107609448B (zh) * 2017-08-28 2020-10-20 苏州佳世达电通有限公司 条码解码方法以及条码解码装置
US11012389B2 (en) 2018-05-07 2021-05-18 Apple Inc. Modifying images with supplemental content for messaging
US10681310B2 (en) 2018-05-07 2020-06-09 Apple Inc. Modifying video streams with supplemental content for video conferencing

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Publication number Priority date Publication date Assignee Title
EP0578950A3 (en) 1992-07-15 1995-11-22 Ibm Method and apparatus for converting floating-point pixel values to byte pixel values by table lookup
US6131104A (en) * 1998-03-27 2000-10-10 Advanced Micro Devices, Inc. Floating point addition pipeline configured to perform floating point-to-integer and integer-to-floating point conversion operations
US6292815B1 (en) * 1998-04-30 2001-09-18 Intel Corporation Data conversion between floating point packed format and integer scalar format
JP4216450B2 (ja) * 2000-09-01 2009-01-28 ローム株式会社 画像処理装置
US7142723B2 (en) 2003-07-18 2006-11-28 Microsoft Corporation System and process for generating high dynamic range images from multiple exposures of a moving scene
US7899855B2 (en) * 2003-09-08 2011-03-01 Intel Corporation Method, apparatus and instructions for parallel data conversions
JP3956311B2 (ja) * 2004-02-19 2007-08-08 オムロン株式会社 画像データ変換装置及びカメラ装置
US20060047734A1 (en) * 2004-08-30 2006-03-02 International Business Machines Corporation Fast conversion of integer to float using table lookup
US7667630B2 (en) * 2004-12-07 2010-02-23 Nippon Telegraph And Telephone Corporation Information compression-encoding device, its decoding device, method thereof, program thereof, and recording medium storing the program
JP5249784B2 (ja) 2006-01-23 2013-07-31 マックス−プランク−ゲゼルシャフト・ツア・フェルデルング・デア・ヴィッセンシャフテン・エー・ファオ 高ダイナミックレンジコーデック
US8014445B2 (en) 2006-02-24 2011-09-06 Sharp Laboratories Of America, Inc. Methods and systems for high dynamic range video coding
US7554557B2 (en) * 2006-03-28 2009-06-30 Silicon Integrated Systems Corp. Device and method for image compression and decompression
US8880571B2 (en) * 2006-05-05 2014-11-04 Microsoft Corporation High dynamic range data format conversions for digital media
US8237865B2 (en) 2006-12-18 2012-08-07 Emanuele Salvucci Multi-compatible low and high dynamic range and high bit-depth texture and video encoding system
US20090322777A1 (en) * 2008-06-26 2009-12-31 Microsoft Corporation Unified texture compression framework
EP2360926A1 (en) * 2010-01-19 2011-08-24 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Image encoder and image decoder
JP2013106333A (ja) * 2011-11-17 2013-05-30 Sony Corp 画像処理装置および方法

Also Published As

Publication number Publication date
JP5608245B2 (ja) 2014-10-15
CN102812705A (zh) 2012-12-05
RU2571612C2 (ru) 2015-12-20
US20130177240A1 (en) 2013-07-11
EP2360926A1 (en) 2011-08-24
US9552652B2 (en) 2017-01-24
WO2011088960A1 (en) 2011-07-28
RU2012140258A (ru) 2014-03-27
CN102812705B (zh) 2016-03-30
EP2526695A1 (en) 2012-11-28
JP2013517723A (ja) 2013-05-16

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Legal Events

Date Code Title Description
B15K Others concerning applications: alteration of classification

Ipc: H04N 7/00 (2011.01), H03M 7/24 (2006.01), H03M 7/3

B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: AS CLASSIFICACOES ANTERIORES ERAM: H04N 7/00 , H03M 7/24 , H03M 7/30

Ipc: H04N 7/00 (2011.01), H04N 19/40 (2014.01), H04N 19

B350 Update of information on the portal [chapter 15.35 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]
B12B Appeal against refusal [chapter 12.2 patent gazette]