WO2012115487A3 - 영상의 변환 및 역변환 방법, 및 이를 이용한 영상의 부호화 및 복호화 장치 - Google Patents

영상의 변환 및 역변환 방법, 및 이를 이용한 영상의 부호화 및 복호화 장치 Download PDF

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Publication number
WO2012115487A3
WO2012115487A3 PCT/KR2012/001447 KR2012001447W WO2012115487A3 WO 2012115487 A3 WO2012115487 A3 WO 2012115487A3 KR 2012001447 W KR2012001447 W KR 2012001447W WO 2012115487 A3 WO2012115487 A3 WO 2012115487A3
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WIPO (PCT)
Prior art keywords
transform
image
same
decoding device
inverse transform
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PCT/KR2012/001447
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English (en)
French (fr)
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WO2012115487A2 (ko
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홍윤미
김일구
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삼성전자 주식회사
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Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to US14/001,567 priority Critical patent/US20140010284A1/en
Publication of WO2012115487A2 publication Critical patent/WO2012115487A2/ko
Publication of WO2012115487A3 publication Critical patent/WO2012115487A3/ko

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    • 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
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • G06F17/14—Fourier, Walsh or analogous domain transformations, e.g. Laplace, Hilbert, Karhunen-Loeve, transforms
    • G06F17/147—Discrete orthonormal transforms, e.g. discrete cosine transform, discrete sine transform, and variations therefrom, e.g. modified discrete cosine transform, integer transforms approximating the discrete cosine transform
    • 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
    • H04N19/169—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
    • H04N19/60—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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Computational Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Discrete Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Complex Calculations (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

영상의 변환/역변환 방법 및 장치가 개시된다. 본 발명에 따른 영상 변환 방법은 이산 코사인 변환 행렬에 포함된 삼각함수를 유리수로 치환하고, 양자화와 함께 수행되는 스케일링 과정에서 스케일링 행렬을 적용하여 치환된 이산 코사인 변환 행렬에 의한 변환 오차를 최소화한다.
PCT/KR2012/001447 2011-02-25 2012-02-24 영상의 변환 및 역변환 방법, 및 이를 이용한 영상의 부호화 및 복호화 장치 WO2012115487A2 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/001,567 US20140010284A1 (en) 2011-02-25 2012-02-24 Image transform and inverse transform method, and image encoding and decoding device using same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161446656P 2011-02-25 2011-02-25
US61/446,656 2011-02-25

Publications (2)

Publication Number Publication Date
WO2012115487A2 WO2012115487A2 (ko) 2012-08-30
WO2012115487A3 true WO2012115487A3 (ko) 2012-12-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/001447 WO2012115487A2 (ko) 2011-02-25 2012-02-24 영상의 변환 및 역변환 방법, 및 이를 이용한 영상의 부호화 및 복호화 장치

Country Status (3)

Country Link
US (1) US20140010284A1 (ko)
KR (1) KR20120098500A (ko)
WO (1) WO2012115487A2 (ko)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI519133B (zh) * 2012-02-29 2016-01-21 新力股份有限公司 影像處理裝置及方法
WO2017135663A2 (ko) * 2016-02-01 2017-08-10 엘지전자 주식회사 행 -열 변환 (row- column transform)을 이용하여 변환을 수행하는 방법 및 장치
WO2018143687A1 (ko) * 2017-02-01 2018-08-09 엘지전자(주) 행-열 변환을 이용하여 변환을 수행하는 방법 및 장치
CN109309835A (zh) * 2017-07-26 2019-02-05 苏州智语新视信息科技有限公司 一种图像压缩方法及装置
EP3474232A1 (en) * 2017-10-19 2019-04-24 Thomson Licensing A method and device for encoding and decoding a rotation 2d/3d matrix
US11769275B2 (en) 2017-10-19 2023-09-26 Interdigital Vc Holdings, Inc. Method and device for predictive encoding/decoding of a point cloud
RU2762873C2 (ru) * 2017-12-15 2021-12-23 ЭлДжи ЭЛЕКТРОНИКС ИНК. Способ кодирования изображений на основе преобразования и устройство для этого
US10812797B2 (en) * 2018-02-05 2020-10-20 Tencent America LLC Method, apparatus and medium for decoding or encoding using a low-complexity transform
US10462486B1 (en) * 2018-05-07 2019-10-29 Tencent America, Llc Fast method for implementing discrete sine transform type VII (DST 7)
WO2020046085A1 (ko) * 2018-09-02 2020-03-05 엘지전자 주식회사 영상 신호를 처리하기 위한 방법 및 장치
EP3918797A4 (en) * 2019-03-10 2023-01-25 HFI Innovation Inc. METHOD AND DEVICE FOR CALCULATION AND REPRESENTATION OF QUANTIZATION MATRICES FOR VIDEO CODING
US11170260B2 (en) 2019-11-14 2021-11-09 Alibaba Group Holding Limited Techniques for determining importance of encoded image components for artificial intelligence tasks
US11403783B2 (en) 2019-11-14 2022-08-02 Alibaba Group Holding Limited Techniques to dynamically gate encoded image components for artificial intelligence tasks
US11366979B2 (en) 2019-11-14 2022-06-21 Alibaba Group Holding Limited Using selected components of frequency domain image data in artificial intelligence tasks
US20210152832A1 (en) * 2019-11-14 2021-05-20 Alibaba Group Holding Limited Reconstructing transformed domain information in encoded video streams

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060112256A (ko) * 2001-09-18 2006-10-31 마이크로소프트 코포레이션 이미지 및 비디오 코딩을 위한 향상된 블록 변환 및 양자화
WO2010085125A2 (ko) * 2009-01-22 2010-07-29 삼성전자 주식회사 영상의 변환 방법 및 장치, 역변환 방법 및 장치

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5872866A (en) * 1995-04-18 1999-02-16 Advanced Micro Devices, Inc. Method and apparatus for improved video decompression by predetermination of IDCT results based on image characteristics
US6002801A (en) * 1995-04-18 1999-12-14 Advanced Micro Devices, Inc. Method and apparatus for improved video decompression by selection of IDCT method based on image characteristics
US7185037B2 (en) * 2001-08-23 2007-02-27 Texas Instruments Incorporated Video block transform
US7082450B2 (en) * 2001-08-30 2006-07-25 Nokia Corporation Implementation of a transform and of a subsequent quantization
US7548727B2 (en) * 2005-10-26 2009-06-16 Broadcom Corporation Method and system for an efficient implementation of the Bluetooth® subband codec (SBC)
US8571340B2 (en) * 2006-06-26 2013-10-29 Qualcomm Incorporated Efficient fixed-point approximations of forward and inverse discrete cosine transforms

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060112256A (ko) * 2001-09-18 2006-10-31 마이크로소프트 코포레이션 이미지 및 비디오 코딩을 위한 향상된 블록 변환 및 양자화
WO2010085125A2 (ko) * 2009-01-22 2010-07-29 삼성전자 주식회사 영상의 변환 방법 및 장치, 역변환 방법 및 장치

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Publication number Publication date
WO2012115487A2 (ko) 2012-08-30
KR20120098500A (ko) 2012-09-05
US20140010284A1 (en) 2014-01-09

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