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KR930005468A - 적응 dct/dpcm부호기에 의한 영상신호부호화방법 및 복호화방법 - Google Patents

적응 dct/dpcm부호기에 의한 영상신호부호화방법 및 복호화방법 Download PDF

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KR930005468A
KR930005468A KR1019920015643A KR920015643A KR930005468A KR 930005468 A KR930005468 A KR 930005468A KR 1019920015643 A KR1019920015643 A KR 1019920015643A KR 920015643 A KR920015643 A KR 920015643A KR 930005468 A KR930005468 A KR 930005468A
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block
video signal
coefficient
encoded
discrete cosine
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KR1019920015643A
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KR950005620B1 (ko
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후이 요우 와이 루카스
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다니이 아끼오
마쯔시다덴기산교 가부시기가이샤
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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
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness
    • 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
    • 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
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/527—Global motion vector estimation
    • 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
    • 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
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability

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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)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

내용 없음.

Description

적응 DCT/DPCM 부호기에 의한 영상신호부호화방법 및 복호화방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 일실시예에 있어서의 적용 DCT/DPCM 부호기의 블록도,
제2도는 본 발명의 영상신호부호화방법에 대응하는 복호기의 흐름도.

Claims (3)

  1. 입력영상신호의 각 프레임을 보다 작은 화소데이터의 블록으로 분할하는 공정과, 상기 블록자체 및 그 주위의 블록을 조사해서 상기 블록이 에지블록으로서 분류되는지의 여부를 결정하는 상기 각 블록을 에지검출처리하는 공정과, 상기 블록이 에지블록으로서 분류되지 않으면, 상기 블록이 DCT계수로 이산적코사인변환, 양자화, 지그재그주사 및 가변길이부호에 의해 런렝스부호화되는, 상기 블록을 이산적 코사인변환부호처리하는 공정과, 상기블록이 에지블록으로서 분류되면, 상기 블록의 화소값이 추정되고, 상기 화소값과 추정값간의 차가 양자화되며, 가변길이부호에 의해 런렝스부호화되는, 상기 에지블록을 차분펄스부호 변조처리하는 공정으로 이루어진 영상 신호 부호화 방법.
  2. 제1항에 있어서, 상기 블록을 이산적 코사인 변환부호화처리 또는 상기 차분펄스부호변조처리하기 전에, 상기 블록이 시간적 용장을 감소하기 위하여 이동보상처리되는 영상신호부호화방법.
  3. 제1항에 의한 부호화방법에 의해 부화화된 영상신호를 복호화하는 영상신호복호화방법에 있어서, 가변길이부호화된 런렝스부호를 복호화하여, 부호화된 프레임의 각 블록의 양자화계수를 재구성하는 공정과, 각 복호화된 양자화된 계수블록이 이산적 코사인변환부호화처리에 의해 부호화 되어 있으면, 상기 각 복호화된 양자와 계수블록을 역양자화처리 및 역이산적 코사인변환처리하여, 프레임버퍼에 위치될 블록화소값을 재구성하는 공정과, 상기 복호화된 양자화된 계수블록이 차분펄스부호변조처리에 의해 부호화되어 있으면, 양자화된 계수블록의 각 계수를 역양자화하고, 추정된 최소값을 부가하여, 프레임버퍼에 위치될 블록화값을 재구성하는 공정으로 이루어진 영상신호복호화방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019920015643A 1991-08-30 1992-08-29 적응 dct/dpcm부호기에 의한 영상신호부호화방법 및 복호화방법 KR950005620B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91-219554 1991-08-30
JP21955491A JP2507204B2 (ja) 1991-08-30 1991-08-30 映像信号符号化装置

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KR930005468A true KR930005468A (ko) 1993-03-23
KR950005620B1 KR950005620B1 (ko) 1995-05-27

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US (1) US5260782A (ko)
EP (1) EP0531041A1 (ko)
JP (1) JP2507204B2 (ko)
KR (1) KR950005620B1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100712531B1 (ko) * 2005-09-10 2007-04-27 삼성전자주식회사 Ｍｐｅｇ－２ 데이터를 ｈ．２６４ 데이터로변환부호화하는 장치 및 방법
KR100716998B1 (ko) * 2005-05-24 2007-05-10 삼성전자주식회사 블록화 현상을 감소시키기 위한 부호화 및 복호화 장치 및그 방법과, 이를 구현하기 위한 프로그램이 기록된 기록매체
KR100568649B1 (ko) * 1997-12-25 2008-03-11 산요덴키가부시키가이샤 동화상복호화장치및동화상복호화방법
WO2011099792A3 (ko) * 2010-02-10 2011-12-08 엘지전자 주식회사 비디오 신호의 처리 방법 및 장치

Families Citing this family (108)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9405914D0 (en) 1994-03-24 1994-05-11 Discovision Ass Video decompression
EP0576749B1 (en) 1992-06-30 1999-06-02 Discovision Associates Data pipeline system
US5475501A (en) * 1991-09-30 1995-12-12 Sony Corporation Picture encoding and/or decoding method and apparatus
GB9204117D0 (en) * 1992-02-26 1992-04-08 British Broadcasting Corp Video image processing
US6680975B1 (en) 1992-02-29 2004-01-20 Samsung Electronics Co., Ltd. Signal encoding and decoding system and method
KR960006762B1 (ko) * 1992-02-29 1996-05-23 삼성전자주식회사 화상부호화를 위한 효율적인 2차원 데이타의 주사선택회로
JP2611607B2 (ja) * 1992-06-29 1997-05-21 日本ビクター株式会社 シーンチェンジ検出装置
US6330665B1 (en) 1992-06-30 2001-12-11 Discovision Associates Video parser
US7095783B1 (en) 1992-06-30 2006-08-22 Discovision Associates Multistandard video decoder and decompression system for processing encoded bit streams including start codes and methods relating thereto
US6047112A (en) 1992-06-30 2000-04-04 Discovision Associates Technique for initiating processing of a data stream of encoded video information
US6067417A (en) 1992-06-30 2000-05-23 Discovision Associates Picture start token
US5809270A (en) 1992-06-30 1998-09-15 Discovision Associates Inverse quantizer
US5842033A (en) 1992-06-30 1998-11-24 Discovision Associates Padding apparatus for passing an arbitrary number of bits through a buffer in a pipeline system
US6435737B1 (en) 1992-06-30 2002-08-20 Discovision Associates Data pipeline system and data encoding method
US6079009A (en) 1992-06-30 2000-06-20 Discovision Associates Coding standard token in a system compromising a plurality of pipeline stages
US6112017A (en) 1992-06-30 2000-08-29 Discovision Associates Pipeline processing machine having a plurality of reconfigurable processing stages interconnected by a two-wire interface bus
US5768561A (en) 1992-06-30 1998-06-16 Discovision Associates Tokens-based adaptive video processing arrangement
JP3315766B2 (ja) * 1992-09-07 2002-08-19 富士通株式会社 画像データ符号化方法、その方法を用いた画像データ符号化装置、画像データ復元方法、その方法を用いた画像データ復元装置、シーン変化検出方法、その方法を用いたシーン変化検出装置、シーン変化記録装置、及び画像データのシーン変化記録・再生装置
US5387938A (en) * 1992-10-08 1995-02-07 Matsushita Electric Industrial Co., Ltd. Adaptive interframe/intraframe block coding method and apparatus
FR2697393A1 (fr) * 1992-10-28 1994-04-29 Philips Electronique Lab Dispositif de codage de signaux numériques représentatifs d'images, et dispositif de décodage correspondant.
KR100276427B1 (ko) * 1993-01-30 2000-12-15 윤종용 화상데이타의 압축 및 복원장치
DE69434989T2 (de) * 1993-03-29 2008-02-14 Canon K.K. Verfahren zur Kontrolle der Datenmenge und Kodierer zur Durchführung derselben
US5426462A (en) * 1993-05-13 1995-06-20 Intel Corporation Apparatus for encoding signals using a configurable transform circuit
US5436666A (en) * 1993-05-21 1995-07-25 Intel Corporation Limited-domain motion estimation/compensation for video encoding/decoding
US5440350A (en) * 1993-05-28 1995-08-08 Intel Corporation Method and apparatus for encoding selected blocks of a residual image signal
US5861894A (en) 1993-06-24 1999-01-19 Discovision Associates Buffer manager
JPH0730888A (ja) * 1993-06-24 1995-01-31 Canon Inc 動画像送信装置及び動画像受信装置
US5699544A (en) * 1993-06-24 1997-12-16 Discovision Associates Method and apparatus for using a fixed width word for addressing variable width data
US5829007A (en) 1993-06-24 1998-10-27 Discovision Associates Technique for implementing a swing buffer in a memory array
US5805914A (en) 1993-06-24 1998-09-08 Discovision Associates Data pipeline system and data encoding method
JP2590705B2 (ja) * 1993-09-28 1997-03-12 日本電気株式会社 動き補償予測装置
US5638068A (en) * 1993-11-24 1997-06-10 Intel Corporation Processing images using two-dimensional forward transforms
US5729484A (en) * 1994-02-28 1998-03-17 Intel Corporation Processes, apparatuses, and systems of encoding and decoding signals using transforms
CA2145361C (en) 1994-03-24 1999-09-07 Martin William Sotheran Buffer manager
CA2145365C (en) 1994-03-24 1999-04-27 Anthony M. Jones Method for accessing banks of dram
CA2145379C (en) 1994-03-24 1999-06-08 William P. Robbins Method and apparatus for addressing memory
GB9405799D0 (en) * 1994-03-24 1994-05-11 Thomson Consumer Electronics Shaped parabolic correction waveform for curved face plate display tube
GB9417138D0 (en) 1994-08-23 1994-10-12 Discovision Ass Data rate conversion
US5621468A (en) * 1994-10-07 1997-04-15 Daewoo Electronics Co., Ltd. Motion adaptive spatio-temporal filtering of video signals
US5590064A (en) * 1994-10-26 1996-12-31 Intel Corporation Post-filtering for decoded video signals
US5886743A (en) * 1994-12-28 1999-03-23 Hyundai Electronics Industries Co. Ltd. Object-by information coding apparatus and method thereof for MPEG-4 picture instrument
EP0721286A3 (en) * 1995-01-09 2000-07-26 Matsushita Electric Industrial Co., Ltd. Video signal decoding apparatus with artifact reduction
KR100209409B1 (ko) * 1995-03-20 1999-07-15 전주범 물체 왜곡을 이용한 물체 기반 부호화 방법 및 장치
US5644504A (en) * 1995-03-27 1997-07-01 International Business Machines Corporation Dynamically partitionable digital video encoder processor
US5946044A (en) * 1995-06-30 1999-08-31 Sony Corporation Image signal converting method and image signal converting apparatus
JP3353604B2 (ja) * 1995-08-09 2002-12-03 ソニー株式会社 動画像符号化方法及び装置、並びに信号記録媒体
US5729691A (en) * 1995-09-29 1998-03-17 Intel Corporation Two-stage transform for video signals
JP3681835B2 (ja) * 1995-12-27 2005-08-10 三菱電機株式会社 画像符号化装置及び画像復号化装置及び符号化・復号化システム
US6957350B1 (en) 1996-01-30 2005-10-18 Dolby Laboratories Licensing Corporation Encrypted and watermarked temporal and resolution layering in advanced television
US5786856A (en) * 1996-03-19 1998-07-28 International Business Machines Method for adaptive quantization by multiplication of luminance pixel blocks by a modified, frequency ordered hadamard matrix
JP3977426B2 (ja) * 1996-04-18 2007-09-19 ノキア コーポレイション ビデオデータ用エンコーダ及びデコーダ
ES2171377T3 (es) * 1996-05-28 2002-09-16 Matsushita Electric Ind Co Ltd Dispositivo de prediccion y decodificado de imagen.
EP0817499A3 (en) * 1996-06-28 2002-05-22 Matsushita Electric Industrial Co., Ltd. Image coding method using extrapolated pixels in insignificant areas of blocks
EP1465431B1 (en) * 1996-09-20 2015-07-15 AT&T Corp. Video coder providing implicit coefficient prediction and scan adaption for image coding and intra coding of video
US6895051B2 (en) 1998-10-15 2005-05-17 Nokia Mobile Phones Limited Video data encoder and decoder
US6621867B1 (en) * 1998-11-16 2003-09-16 Hitachi America, Ltd Methods and apparatus for detecting edges within encoded images
US8374237B2 (en) 2001-03-02 2013-02-12 Dolby Laboratories Licensing Corporation High precision encoding and decoding of video images
US7266150B2 (en) 2001-07-11 2007-09-04 Dolby Laboratories, Inc. Interpolation of video compression frames
US8111754B1 (en) 2001-07-11 2012-02-07 Dolby Laboratories Licensing Corporation Interpolation of video compression frames
US20030112863A1 (en) 2001-07-12 2003-06-19 Demos Gary A. Method and system for improving compressed image chroma information
US7003035B2 (en) 2002-01-25 2006-02-21 Microsoft Corporation Video coding methods and apparatuses
US7023918B2 (en) * 2002-05-30 2006-04-04 Ess Technology, Inc. Color motion artifact detection and processing apparatus compatible with video coding standards
US20040001546A1 (en) 2002-06-03 2004-01-01 Alexandros Tourapis Spatiotemporal prediction for bidirectionally predictive (B) pictures and motion vector prediction for multi-picture reference motion compensation
US7280700B2 (en) 2002-07-05 2007-10-09 Microsoft Corporation Optimization techniques for data compression
US7944971B1 (en) * 2002-07-14 2011-05-17 Apple Inc. Encoding video
US7154952B2 (en) 2002-07-19 2006-12-26 Microsoft Corporation Timestamp-independent motion vector prediction for predictive (P) and bidirectionally predictive (B) pictures
KR100522595B1 (ko) * 2002-11-29 2005-10-19 삼성전자주식회사 엠펙 비디오 복호화방법 및 엠펙 비디오 복호화기
US7212571B2 (en) * 2003-01-31 2007-05-01 Seiko Epson Corporation Method and apparatus for DCT domain filtering for block based encoding
US7039247B2 (en) * 2003-01-31 2006-05-02 Sony Corporation Graphic codec for network transmission
BRPI0408087A (pt) * 2003-03-03 2006-02-14 Agency Science Tech & Res método de intrapredição de codificação de vìdeo avançada (avc) para codificar vìdeo digital, aparelho que utiliza essa intrapredição e produto de programa de computador
US7609763B2 (en) 2003-07-18 2009-10-27 Microsoft Corporation Advanced bi-directional predictive coding of video frames
US8064520B2 (en) 2003-09-07 2011-11-22 Microsoft Corporation Advanced bi-directional predictive coding of interlaced video
US7394856B2 (en) * 2003-09-19 2008-07-01 Seiko Epson Corporation Adaptive video prefilter
US7573406B2 (en) * 2004-05-21 2009-08-11 Broadcom Corporation System and method for decoding context adaptive variable length coding
TWI253001B (en) * 2004-11-16 2006-04-11 An Lnternet Products & Technol Method for setting the threshold of a fast motion estimation algorithm
JP2006205854A (ja) 2005-01-27 2006-08-10 Aisin Seiki Co Ltd ステップ装置
US8084001B2 (en) * 2005-05-02 2011-12-27 Cornell Research Foundation, Inc. Photoluminescent silica-based sensors and methods of use
KR100809603B1 (ko) * 2005-12-01 2008-03-06 한국전자통신연구원 화소 단위 기반 영상 부호화 및 복호화 장치 및 방법
TWI323604B (en) * 2006-05-09 2010-04-11 Realtek Semiconductor Corp Video processing method and apparatus based on smooth detection
US8208545B2 (en) 2006-06-01 2012-06-26 Electronics And Telecommunications Research Institute Method and apparatus for video coding on pixel-wise prediction
TWI342157B (en) * 2006-09-19 2011-05-11 Realtek Semiconductor Corp De-interlacing methods and related apparatuses
KR101103968B1 (ko) * 2006-12-19 2012-01-06 현대중공업 주식회사 타이어식 건설장비의 굴절 접이식 발판
KR101312260B1 (ko) * 2007-01-19 2013-09-25 삼성전자주식회사 에지 영역을 효과적으로 압축하고 복원하는 방법 및 장치
JP4748603B2 (ja) * 2007-02-28 2011-08-17 株式会社Ｋｄｄｉ研究所 動画像符号化装置
US20080225947A1 (en) * 2007-03-13 2008-09-18 Matthias Narroschke Quantization for hybrid video coding
US8254455B2 (en) 2007-06-30 2012-08-28 Microsoft Corporation Computing collocated macroblock information for direct mode macroblocks
JP5194833B2 (ja) * 2008-01-23 2013-05-08 ソニー株式会社 符号化装置および方法、記録媒体、並びにプログラム
US9445121B2 (en) 2008-08-04 2016-09-13 Dolby Laboratories Licensing Corporation Overlapped block disparity estimation and compensation architecture
KR20110118641A (ko) * 2009-01-29 2011-10-31 파나소닉 주식회사 화상 부호화 방법 및 화상 복호 방법
US8189666B2 (en) 2009-02-02 2012-05-29 Microsoft Corporation Local picture identifier and computation of co-located information
EP2216998A1 (en) 2009-02-10 2010-08-11 Panasonic Corporation Hierarchical coding for intra
US9774875B2 (en) * 2009-03-10 2017-09-26 Avago Technologies General Ip (Singapore) Pte. Ltd. Lossless and near-lossless image compression
US9129409B2 (en) * 2009-07-29 2015-09-08 Qualcomm Incorporated System and method of compressing video content
US9106933B1 (en) 2010-05-18 2015-08-11 Google Inc. Apparatus and method for encoding video using different second-stage transform
US8428381B2 (en) * 2010-06-04 2013-04-23 Altek Corporation Image compression method with variable quantization parameter
JP5195875B2 (ja) * 2010-11-10 2013-05-15 ソニー株式会社 復号装置及び方法、記録媒体、並びにプログラム
US9210442B2 (en) 2011-01-12 2015-12-08 Google Technology Holdings LLC Efficient transform unit representation
US9380319B2 (en) 2011-02-04 2016-06-28 Google Technology Holdings LLC Implicit transform unit representation
UA109312C2 (uk) 2011-03-04 2015-08-10 Імпульсно-кодова модуляція з квантуванням при кодуванні відеоінформації
US9219915B1 (en) 2013-01-17 2015-12-22 Google Inc. Selection of transform size in video coding
US9544597B1 (en) 2013-02-11 2017-01-10 Google Inc. Hybrid transform in video encoding and decoding
US9967559B1 (en) 2013-02-11 2018-05-08 Google Llc Motion vector dependent spatial transformation in video coding
US9674530B1 (en) 2013-04-30 2017-06-06 Google Inc. Hybrid transforms in video coding
US9565451B1 (en) 2014-10-31 2017-02-07 Google Inc. Prediction dependent transform coding
US9769499B2 (en) 2015-08-11 2017-09-19 Google Inc. Super-transform video coding
US10277905B2 (en) 2015-09-14 2019-04-30 Google Llc Transform selection for non-baseband signal coding
US9807423B1 (en) 2015-11-24 2017-10-31 Google Inc. Hybrid transform scheme for video coding
US11122297B2 (en) 2019-05-03 2021-09-14 Google Llc Using border-aligned block functions for image compression

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3714589A1 (de) * 1987-05-01 1988-11-10 Standard Elektrik Lorenz Ag Videosignal-codierer mit dpcm und adaptiver praediktion
JPH01173974A (ja) * 1987-12-26 1989-07-10 Fujitsu Ltd 画像符号化方式
JPH0284894A (ja) * 1988-09-20 1990-03-26 Nippon Telegr & Teleph Corp <Ntt> 画像符号化方式
JP3085465B2 (ja) * 1989-10-31 2000-09-11 オリンパス光学工業株式会社 画像データの符号化装置および符号化方法
JP3005007B2 (ja) * 1989-12-21 2000-01-31 キヤノン株式会社 画像符号化装置
US5008745A (en) * 1989-12-21 1991-04-16 Burle Technologies, Inc. Clock synchronized digital TV motion detector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100568649B1 (ko) * 1997-12-25 2008-03-11 산요덴키가부시키가이샤 동화상복호화장치및동화상복호화방법
KR100716998B1 (ko) * 2005-05-24 2007-05-10 삼성전자주식회사 블록화 현상을 감소시키기 위한 부호화 및 복호화 장치 및그 방법과, 이를 구현하기 위한 프로그램이 기록된 기록매체
KR100712531B1 (ko) * 2005-09-10 2007-04-27 삼성전자주식회사 Ｍｐｅｇ－２ 데이터를 ｈ．２６４ 데이터로변환부호화하는 장치 및 방법
WO2011099792A3 (ko) * 2010-02-10 2011-12-08 엘지전자 주식회사 비디오 신호의 처리 방법 및 장치
US9100649B2 (en) 2010-02-10 2015-08-04 Lg Electronics Inc. Method and apparatus for processing a video signal

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