WO2012177027A3 - 영상의 변환 방법 및 장치, 역변환 방법 및 장치 - Google Patents

영상의 변환 방법 및 장치, 역변환 방법 및 장치 Download PDF

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Publication number
WO2012177027A3
WO2012177027A3 PCT/KR2012/004811 KR2012004811W WO2012177027A3 WO 2012177027 A3 WO2012177027 A3 WO 2012177027A3 KR 2012004811 W KR2012004811 W KR 2012004811W WO 2012177027 A3 WO2012177027 A3 WO 2012177027A3
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WO
WIPO (PCT)
Prior art keywords
transformation
discrete cosine
images
point discrete
transformation matrix
Prior art date
Application number
PCT/KR2012/004811
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English (en)
French (fr)
Other versions
WO2012177027A2 (ko
Inventor
알쉬나엘레나
알쉰알렉산더
Original Assignee
삼성전자 주식회사
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 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to JP2014515766A priority Critical patent/JP2014523673A/ja
Priority to US14/127,042 priority patent/US20140140394A1/en
Priority to EP12803459.2A priority patent/EP2723075A4/en
Priority to CN201280040311.XA priority patent/CN103748885A/zh
Publication of WO2012177027A2 publication Critical patent/WO2012177027A2/ko
Publication of WO2012177027A3 publication Critical patent/WO2012177027A3/ko

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Classifications

    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Discrete Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Complex Calculations (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Image Processing (AREA)

Abstract

영상의 변환 방법 및 장치, 역변환 방법 및 장치가 개시된다. 본 발명의 일 실시예에 따른 영상 변환 방법은 N 포인트 이산 코사인 변환에 이용되는 변환 행렬을 구성하는 원소들을 소정의 스케일링 팩터를 이용하여 스케일링하여 정수값을 갖는 스케일링된 원소들을 획득하고, 정수값을 갖는 스케일링된 원소들로 구성된 정수 변환 행렬을 이용하여 N 포인트 이산 코사인 변환을 수행하며, 스케일링 팩터를 이용하여 N 포인트 이산 코사인 변환 행렬의 결과값을 디스케일링한다.
PCT/KR2012/004811 2011-06-18 2012-06-18 영상의 변환 방법 및 장치, 역변환 방법 및 장치 WO2012177027A2 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2014515766A JP2014523673A (ja) 2011-06-18 2012-06-18 映像の変換方法及びその装置、逆変換方法及びその装置
US14/127,042 US20140140394A1 (en) 2011-06-18 2012-06-18 Method and device for the transformation and method and device for the reverse transformation of images
EP12803459.2A EP2723075A4 (en) 2011-06-18 2012-06-18 METHOD AND DEVICE FOR TRANSFORMATION, AND METHOD AND DEVICE FOR INVERSE TRANSFORMATION OF IMAGES
CN201280040311.XA CN103748885A (zh) 2011-06-18 2012-06-18 用于图像变换的方法和装置及用于图像逆变换的方法和装置

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201161498530P 2011-06-18 2011-06-18
US61/498,530 2011-06-18
US201161501943P 2011-06-28 2011-06-28
US61/501,943 2011-06-28

Publications (2)

Publication Number Publication Date
WO2012177027A2 WO2012177027A2 (ko) 2012-12-27
WO2012177027A3 true WO2012177027A3 (ko) 2013-02-28

Family

ID=47423066

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/004811 WO2012177027A2 (ko) 2011-06-18 2012-06-18 영상의 변환 방법 및 장치, 역변환 방법 및 장치

Country Status (6)

Country Link
US (1) US20140140394A1 (ko)
EP (1) EP2723075A4 (ko)
JP (1) JP2014523673A (ko)
KR (1) KR20120139611A (ko)
CN (1) CN103748885A (ko)
WO (1) WO2012177027A2 (ko)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3044507A1 (fr) * 2015-11-30 2017-06-02 Orange Procede de codage et de decodage d'images, dispositif de codage et de decodage d'images et programmes d'ordinateur correspondants
WO2019194505A1 (ko) * 2018-04-01 2019-10-10 엘지전자 주식회사 축소된 회전기반 변환을 이용하여 비디오 신호를 처리하는 방법 및 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1175186A (ja) * 1997-06-13 1999-03-16 Sun Microsyst Inc スケーリングされた順方向および逆方向の離散コサイン変換と、これを使用するビデオ圧縮伸長システム
KR20060135613A (ko) * 2003-09-24 2006-12-29 텍사스 인스트루먼츠 인코포레이티드 8×8 변환 및 양자화
JP2009258786A (ja) * 2008-04-11 2009-11-05 Mitsubishi Electric Corp 動画像符号化装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8335811B2 (en) * 2004-03-04 2012-12-18 Broadcom Corporation Method and system for high fidelity IDCT and DCT algorithms
CN100433837C (zh) * 2004-03-18 2008-11-12 华中科技大学 视频编码的整数变换方法
CN100442847C (zh) * 2005-11-25 2008-12-10 浙江大学 H.264整数变换加速的装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1175186A (ja) * 1997-06-13 1999-03-16 Sun Microsyst Inc スケーリングされた順方向および逆方向の離散コサイン変換と、これを使用するビデオ圧縮伸長システム
KR20060135613A (ko) * 2003-09-24 2006-12-29 텍사스 인스트루먼츠 인코포레이티드 8×8 변환 및 양자화
JP2009258786A (ja) * 2008-04-11 2009-11-05 Mitsubishi Electric Corp 動画像符号化装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2723075A4 *

Also Published As

Publication number Publication date
CN103748885A (zh) 2014-04-23
EP2723075A4 (en) 2014-12-24
EP2723075A2 (en) 2014-04-23
US20140140394A1 (en) 2014-05-22
JP2014523673A (ja) 2014-09-11
WO2012177027A2 (ko) 2012-12-27
KR20120139611A (ko) 2012-12-27

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