PL408821A1 - Sposób kodowania obrazu, sposób dekodowania obrazu, koder obrazu oraz dekoder obrazu - Google Patents

Sposób kodowania obrazu, sposób dekodowania obrazu, koder obrazu oraz dekoder obrazu

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Publication number
PL408821A1
PL408821A1 PL408821A PL40882112A PL408821A1 PL 408821 A1 PL408821 A1 PL 408821A1 PL 408821 A PL408821 A PL 408821A PL 40882112 A PL40882112 A PL 40882112A PL 408821 A1 PL408821 A1 PL 408821A1
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Poland
Prior art keywords
image
transformation
coder
decoding
coding
Prior art date
Application number
PL408821A
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English (en)
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PL231160B1 (pl
Inventor
Bae Keun Lee
Jae Cheol Kwon
Joo Young Kim
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Kt Corp
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Publication date
Application filed by Kt Corp filed Critical Kt Corp
Publication of PL408821A1 publication Critical patent/PL408821A1/pl
Publication of PL231160B1 publication Critical patent/PL231160B1/pl

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    • 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
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H—ELECTRICITY
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    • H04N19/46—Embedding additional information in the video signal during the compression process
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    • 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
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    • 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
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    • H04N19/192—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive
    • H04N19/194—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding the adaptation method, adaptation tool or adaptation type being iterative or recursive involving only two passes
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    • H04N19/45—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder performing compensation of the inverse transform mismatch, e.g. Inverse Discrete Cosine Transform [IDCT] mismatch
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    • H04N19/146—Data rate or code amount at the encoder output
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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Wynalazek dotyczy techniki kodowania i dekodowania obrazu, przy czym sposób kodowania obrazu obejmuje etapy: wykonywanie predykcji względem bieżącego bloku oraz przekształcanie resztki, która jest generowana przez predykcję, przy czym w etapie przekształcania pierwsze przekształcenie jest wykonywane na resztce, a następnie drugie przekształcenie jest wykonywane na obszarze niższej częstotliwości, przy czym o trybie drugiego przekształcenia można zdecydować na podstawie trybu pierwszego przekształcenia.
PL408821A 2011-10-18 2012-10-18 Sposób dekodowania sygnału wideo PL231160B1 (pl)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20110106624 2011-10-18
KR2011-0106624 2011-10-18
PCT/KR2012/008563 WO2013058583A1 (ko) 2011-10-18 2012-10-18 영상 부호화 방법, 영상 복호화 방법, 영상 부호화기 및 영상 복호화기

Publications (2)

Publication Number Publication Date
PL408821A1 true PL408821A1 (pl) 2015-07-20
PL231160B1 PL231160B1 (pl) 2019-01-31

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US (3) US10264283B2 (pl)
KR (10) KR101828964B1 (pl)
CN (19) CN107105244B (pl)
AU (5) AU2012326819B2 (pl)
BR (1) BR112014009449B1 (pl)
CA (2) CA2853002C (pl)
GB (3) GB2561487B (pl)
MX (5) MX336750B (pl)
PL (1) PL231160B1 (pl)
RU (10) RU2719375C2 (pl)
WO (1) WO2013058583A1 (pl)

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