WO2009044744A1 - 画像符号化装置、画像符号化方法、画像符復号化システム - Google Patents

画像符号化装置、画像符号化方法、画像符復号化システム Download PDF

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Publication number
WO2009044744A1
WO2009044744A1 PCT/JP2008/067762 JP2008067762W WO2009044744A1 WO 2009044744 A1 WO2009044744 A1 WO 2009044744A1 JP 2008067762 W JP2008067762 W JP 2008067762W WO 2009044744 A1 WO2009044744 A1 WO 2009044744A1
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WIPO (PCT)
Prior art keywords
data
encoding
image encoding
generate
target
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PCT/JP2008/067762
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English (en)
French (fr)
Inventor
Masayuki Yamaguchi
Akihisa Yamada
Shinichi Maeta
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Sharp Kabushiki Kaisha
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Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Priority to EP08835686.0A priority Critical patent/EP2202983B1/en
Priority to CN200880109832XA priority patent/CN101816182B/zh
Priority to US12/733,904 priority patent/US8340445B2/en
Publication of WO2009044744A1 publication Critical patent/WO2009044744A1/ja

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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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • 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
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • 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
    • H04N19/182—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 pixel
    • 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
    • H04N19/423—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 characterised by memory arrangements
    • H04N19/426—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 characterised by memory arrangements using memory downsizing methods
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • 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
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

　符号化遅延が小さく、画素データ毎の符号化を固定長データによって行うとともに、復号化して生成される画像の画質劣化を最小限に抑制可能な画像符号化装置を提供する。符号化対象画素の画素データである対象画素データを予測して予測値データを生成する予測値生成手段１６と、対象画素データと予測値データの差分値を算出して差分値データを生成する減算器１１と、差分値データに基づいて符号化モードを決定し、バッファ１７に一時的に保持する符号化モード決定手段１２と、符号化モードに基づいて符号化処理を行う対象となる符号化対象データを、対象画素データ或いは差分値データの何れとするかを決定する符号化対象決定手段１３と、符号化モードに基づいて符号化対象データに量子化処理を行って量子化データを生成する量子化手段１４と、量子化データに符号化モードを付して固定長符号を生成する固定長符号生成手段１５とを備える。
PCT/JP2008/067762 2007-10-01 2008-09-30 画像符号化装置、画像符号化方法、画像符復号化システム WO2009044744A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08835686.0A EP2202983B1 (en) 2007-10-01 2008-09-30 Image encoding device, image encoding method, and image encoding system
CN200880109832XA CN101816182B (zh) 2007-10-01 2008-09-30 图像编码装置、图像编码方法、图像编解码系统
US12/733,904 US8340445B2 (en) 2007-10-01 2008-09-30 Image encoding device, image encoding method, image encoding/decoding system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007-257981 2007-10-01
JP2007257981 2007-10-01
JP2008133522 2008-05-21
JP2008-133522 2008-05-21

Publications (1)

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WO2009044744A1 true WO2009044744A1 (ja) 2009-04-09

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US (1) US8340445B2 (ja)
EP (1) EP2202983B1 (ja)
JP (1) JP4612716B2 (ja)
CN (1) CN101816182B (ja)
WO (1) WO2009044744A1 (ja)

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JP2010004514A (ja) 2010-01-07
CN101816182B (zh) 2012-11-21
EP2202983A4 (en) 2016-03-23
US20100220936A1 (en) 2010-09-02
EP2202983B1 (en) 2019-06-05
US8340445B2 (en) 2012-12-25
JP4612716B2 (ja) 2011-01-12
EP2202983A1 (en) 2010-06-30
CN101816182A (zh) 2010-08-25

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