KR950002473A - 적응적 양자화방법 및 그 장치 - Google Patents

적응적 양자화방법 및 그 장치 Download PDF

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KR950002473A
KR950002473A KR1019930011322A KR930011322A KR950002473A KR 950002473 A KR950002473 A KR 950002473A KR 1019930011322 A KR1019930011322 A KR 1019930011322A KR 930011322 A KR930011322 A KR 930011322A KR 950002473 A KR950002473 A KR 950002473A
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quantization step
quantization
blocks
curve
buffer
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KR1019930011322A
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KR0162203B1 (ko
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임명식
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김광호
삼성전자 주식회사
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Priority to US08/262,844 priority patent/US5521643A/en
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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
    • H04N19/102—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
    • 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
    • H04N19/87—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving scene cut or scene change detection in combination with video compression
    • 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
    • H04N19/142—Detection of scene cut or scene change
    • 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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • 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
    • H04N19/172—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 picture, frame or field
    • 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
    • H04N19/10—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
    • H04N19/179—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 scene or a shot
    • 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
    • H04N19/10—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
    • H04N19/134—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
    • H04N19/152—Data rate or code amount at the encoder output by measuring the fullness of the transmission buffer

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 화상정보를 전송 또는 저장하기 위해 디지탈부호화하는 시스템에서 양자화스텝(Quantization Step)을 결정하는 방식에 관한 것으로, 특히 한 화면에 대한 인트라모드블록수 및 인터모드블럭수를 산출하여 이 인터모드블록수 및 인트라모드블록수에 의해 다수개의 양자화스텝결정곡선 중에서 하나의 곡선을 선택하고, 버퍼에 데이타가 저장된 정도에 따라 상기 선택된 양자화스텝결정곡선으로부터 양자화스텝을 결정함으로써, 화면변화 및 버퍼내의 상태에 효과적으로 대응하여 양질의 화질을 얻는 효과를 갖는다.
(대표도면:제 1도)

Description

적응적 양자화방법 및 그 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 의한 적응적 양자화장치를 나타내는 블록도, 제2도는 제1도 장치의 동작을 설명하기 위한 파형도.

Claims (6)

  1. 디지탈영상데이타의 부호화방식에서, 한 화면내의 인트라/인터모드블록의 분포상태와 부호화된 데이타가 저장되는 버퍼의 상태에 따라 상기 디지탈영상데이타를 양자화하는 장치에 있어서,상기 디지탈영상데이타를 공급받아 인터모드로 부호화할 것인지 또는 인트라모드로 부호화할 것인지를 블록단위로 결정하고, 상기 인터모드 및 인트라모드에 대한 블록수를 산출하여 출력하는 모드결정수단; 및 상기 모드결정수단으로부터 인터모드블록수 및 인트라모드블록수를 인가받고 상기 버퍼로부터 버퍼상태신호를 인가받아 양자화스텝을 결정하여 양자화기로 출력하는 양자화제어수단을 포함하는 적응적 양자화장치
  2. 제1항에 있어서, 상기 양자화제어수단을 다수개의 양자화스텝결정곡선을 저장하고, 상기 인트라모드블록수가 상기 인터모드블록수보다 많을수록 같은 버퍼점유율에 대해 높은 양자화스텝을 가지는 양자화스텝 결정곡선을 선택하여 이 양자화결정곡선으로부터 양자화스텝을 결정하는 것을 특징으로 하는 적응적 양자화 장치.
  3. 제2항에 있어서, 상기 양자화스텝결정곡선은 버퍼에 유입되는 데이타양에 대한 양자화스텝을 나타내는 곡선인 것을 특징으로 하는 적응적 양자화장치.
  4. 디지탈영상데이타의 부호화방식에서, 한 화면내의 인트라/인터모드블록의 분호상태와 부호화된 데이타가 저장되는 버퍼의 상태에 따라 상기 디지탈영상데이타를 양자화하는 방법에 있어서, 다수의 양자화스텝결정곡선을 사전설정하는 단계; 한 화면에 대한 인터모드블록수 및 인트라모드블록수를 산출하는 단계; 상기 인터모드블록수 및 인트라모드블록수에 의해 다수개의 양자화스텝결정곡선 중에서 하나의 곡선을 선택하는 단계; 및 상기 버퍼에 데이타가 저장된 정도에 따라 상기 선택된 양자화스텝결정곡선으로부터 양자화스텝을 결정하는 단계를 포함하는 것을 특징으로 하는 적응적 양자화방법.
  5. 제4항에 있어서, 상기 양자화스텝결정곡선은 버퍼에 유입되는 데이타양에 대한 양자화스텝을 나타내는 곡선인 것을 특징으로 하는 적응적 양자화방법.
  6. 제4항에 있어서, 상기 선택단계는 상기 인트라모드블록수가 상기 인터모드블록수보다 많을수록, 같은 버퍼점유율에 대해 높은 양자화스텝을 가지는 양자화스텝결정곡선을 선택하여 이 양자화스텝결정곡선으로부터 양자화스텝을 결정하는 것을 특징으로 하는 적응적 양자화방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930011322A 1993-06-21 1993-06-21 양자화스텝사이즈의 가변을 이용한 적응적 부호화방법 및 그 장치 KR0162203B1 (ko)

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KR1019930011322A KR0162203B1 (ko) 1993-06-21 1993-06-21 양자화스텝사이즈의 가변을 이용한 적응적 부호화방법 및 그 장치
US08/262,844 US5521643A (en) 1993-06-21 1994-06-21 Adaptively coding method and apparatus utilizing variation in quantization step size

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KR1019930011322A KR0162203B1 (ko) 1993-06-21 1993-06-21 양자화스텝사이즈의 가변을 이용한 적응적 부호화방법 및 그 장치

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KR0162203B1 KR0162203B1 (ko) 1998-12-15

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100405051B1 (ko) * 2001-04-18 2003-11-07 한국과학기술연구원 내연기관의 배기 소음 제어장치
KR100466596B1 (ko) * 2002-01-07 2005-01-24 주식회사 팬택앤큐리텔 인트라 리프레쉬를 이용한 블럭기반 비디오 부호화기의적응적 율제어 방법
KR100496325B1 (ko) * 2001-11-09 2005-06-17 현대모비스 주식회사 차량 배기계의 소음 감쇠 장치
US8844671B2 (en) 2012-05-16 2014-09-30 Leica Microsystems Cms Gmbh Apparatus for damping sound in the optical beam path of a microscope, and microscope having a corresponding apparatus

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933451A (en) * 1994-04-22 1999-08-03 Thomson Consumer Electronics, Inc. Complexity determining apparatus
JP3954656B2 (ja) * 1994-09-29 2007-08-08 ソニー株式会社 画像符号化装置及び方法
JPH08256341A (ja) * 1995-03-17 1996-10-01 Sony Corp 画像信号符号化方法、画像信号符号化装置、画像信号記録媒体、及び画像信号復号化装置
US6084908A (en) * 1995-10-25 2000-07-04 Sarnoff Corporation Apparatus and method for quadtree based variable block size motion estimation
US5731837A (en) * 1996-01-25 1998-03-24 Thomson Multimedia, S.A. Quantization circuitry as for video signal compression systems
US6668088B1 (en) 1997-02-25 2003-12-23 British Broadcasting Corporation Digital signal compression encoding with improved quantisation
JP2001501430A (ja) * 1997-07-29 2001-01-30 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 可変ビットレート・ビデオ符号化方法および対応するビデオ符号器
US6633673B1 (en) * 1999-06-17 2003-10-14 Hewlett-Packard Development Company, L.P. Fast fade operation on MPEG video or other compressed data
US20030185299A1 (en) * 2001-11-30 2003-10-02 Taro Takita Program, recording medium, and image encoding apparatus and method
US20030128761A1 (en) * 2001-12-07 2003-07-10 Minhua Zhou Image and video coding
US8396119B1 (en) * 2009-09-30 2013-03-12 Ambarella, Inc. Data sample compression and decompression using randomized quantization bins
US20110317762A1 (en) * 2010-06-29 2011-12-29 Texas Instruments Incorporated Video encoder and packetizer with improved bandwidth utilization

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4972260A (en) * 1988-08-22 1990-11-20 Matsushita Electric Industrial Co., Ltd. Apparatus for coding a moving-picture signal
JPH0714209B2 (ja) * 1989-12-20 1995-02-15 松下電器産業株式会社 動画像符号化装置
US5136371A (en) * 1990-03-15 1992-08-04 Thomson Consumer Electronics, Inc. Digital image coding using random scanning
US5396567A (en) * 1990-11-16 1995-03-07 Siemens Aktiengesellschaft Process for adaptive quantization for the purpose of data reduction in the transmission of digital images

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100405051B1 (ko) * 2001-04-18 2003-11-07 한국과학기술연구원 내연기관의 배기 소음 제어장치
KR100496325B1 (ko) * 2001-11-09 2005-06-17 현대모비스 주식회사 차량 배기계의 소음 감쇠 장치
KR100466596B1 (ko) * 2002-01-07 2005-01-24 주식회사 팬택앤큐리텔 인트라 리프레쉬를 이용한 블럭기반 비디오 부호화기의적응적 율제어 방법
US8844671B2 (en) 2012-05-16 2014-09-30 Leica Microsystems Cms Gmbh Apparatus for damping sound in the optical beam path of a microscope, and microscope having a corresponding apparatus

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KR0162203B1 (ko) 1998-12-15

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