KR910005691A - 변환 부호화 장치 - Google Patents

변환 부호화 장치 Download PDF

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KR910005691A
KR910005691A KR1019900012397A KR900012397A KR910005691A KR 910005691 A KR910005691 A KR 910005691A KR 1019900012397 A KR1019900012397 A KR 1019900012397A KR 900012397 A KR900012397 A KR 900012397A KR 910005691 A KR910005691 A KR 910005691A
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transform
coefficients
coefficient
zero
dimensional
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KR1019900012397A
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KR930009872B1 (ko
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요시아끼 가또
도꾸마찌 무라까미
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시기 모리야
미쯔비시덴끼 가부시끼가이샤
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Priority claimed from JP21362289A external-priority patent/JP2503678B2/ja
Priority claimed from JP32452789A external-priority patent/JP2503698B2/ja
Priority claimed from JP2011500A external-priority patent/JP2503706B2/ja
Priority claimed from JP2034658A external-priority patent/JPH0822064B2/ja
Application filed by 시기 모리야, 미쯔비시덴끼 가부시끼가이샤 filed Critical 시기 모리야
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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
    • H04N19/10—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
    • H04N19/18—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
    • 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
    • H04N19/102—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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • 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
    • H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
    • 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
    • H04N19/189—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
    • H04N19/196—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 being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • 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
    • 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
    • H04N19/149—Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
    • 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
    • H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer

Abstract

내용 없음

Description

변환 부호화 장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 1실시예를 설명하는 블럭도.
제2도는 본 발명의 1실시예를 설명하기 위한 블럭도.
제3도는 본 발명의 1실시예의 동작을 설명하는 흐름도.

Claims (4)

  1. 입력신호 계열에 대하여 선형 변환을 실행하는 변환영역에서 저역에서 고역으로 순차로 변환 계수를 양자화 하여 부호화하는 변환 부호화 장치에 있어서, 선형 변환과 양자화의 조작을 조합해서 실행하는것에 의해 양자화되는 변환 계수의 값이 미리 영으로 추정되는 변환 계수에 대해서 선형 변환 연산을 중지하며, 또 후속하는 변환계수의 양자화 출력을 영으로 하는 수단을 마련하여 고속으로 변환 부호화를 실행하는 것을 특징으로 하는 변환부호화 장치.
  2. 입력 신호 계열에 대해서 선형 변환을 실행하여 변환영역에서 저역에서 고역으로 순차로 변환 계수를 양자화해서 부호화하는 변환 부호화 장치에 있어서, 양자화된 변환 계수의 값중 연속하는 영계수의 갯수를 계수하는 수단(25), 송신버퍼 (11)의 데이타 잔량에 따라서 전송하는 연속한 영계수의 갯수의 임계값을 결정하는 수단(29)및 상기 계수값이 상기 임계값을 넘었을때 후속하는 변환 계수에 대해서는그들 양자화 출력을 영으로하는 수단(15)을 마련해서 이루어지는 변환부호화 장치.
  3. 입력 신호 계열에 대해서 블럭화를 실행한 후 2차원 선형 변환을 실행하여 변환 영역에서의 저역에서 고역으로 변환계수를 순차로 양자화하여 부호화하는 변환부호화 장치에 있어서, 블럭화한 입력 신호 계열에 1차원 선형 변환을 실시하여 1차원 변환계수 블럭을 얻는 수단(20), 상기 1차원 변환개수 블럭에 또 직교하는 1차원 선형 변환을 실시하여 저역에서 고역으로 순차로 1개의 2차원 변환계수를 얻는 수단(21), 상기 2차원 변환 계수를 소정의 양자화 특성으로 양자화 한 양자화 계수중 연속하는 영계수의 갯수를 계수하는 수단(25), 상기 양자화 계수열에서 영이 아닌 계수와 상기 영이 아닌 계수가 나타나기까지 상기 계수 수단에 의해 계수된 영연속 영계수의 갯수를 조로 해서 블럭단위로 기억하는 수단(30), 부호화 정보 발생량을 소정의 전송 정보량에 가깝게 하기 위해 부호화 전송하는연속 영계수의 갯수의 임계값을 송신 버퍼에 데이타 잔량에서 설정하는 수단(29)및 상기 연속 영계수를 계수한 값이 상기 임계값을 넘었을 때 후속하는 2차원 변환계수를 구하기 위한 1차원 선형 변환 및양자화 처리를 중단하여 상기 기억된 조마다 부호의 할당을 실행하는 수단(31)을 마련해서 이루어지는 변환부호화장치.
  4. 입력 신호 계열에 대하여 블럭화를 실행한 후 선형변환을 실행하여 변환 영역에서 저역에서 고역으로 변환 계수를 순서로 양자화해서 부호화하는 변환 부호화 장치에 있어서, 변환계수를 소정의 양자화특성으로 양자화한 양자화 계수중 연속하는 영계수의 갯수를 계수하는 수단(25), 상기 양자화 계수열에서 영이 아닌 계수와 상기 영이 아닌 계수가 나타나기까지 상기 계수 수단에 의해 계수된 연속영계수의 갯수를 조로 해서 블럭 단위로 기억하는 수단(30), 부호화 정보 발생량을 소정의 전송 정보량에 접근시키기 위해서 부호화 전송하는 연속 영계수의 갯수의 임계값을 송신버퍼의 데이타 잔량에서 설정하는 수단(29)및 상기 연속 영계수를 계수한 값이 상기 임계값을 넘었을때 후속하는 변환 계수의 양자화를 중단하여 상기 기억된 조마다 부호의 할당을 실행하는 수단(31)를 마련해서 이루어지는 변환 부호화 장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900012397A 1989-08-19 1990-08-13 변환 부호화 장치 KR930009872B1 (ko)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
JP1-213622 1989-08-19
JP89-213622 1989-08-19
JP21362289A JP2503678B2 (ja) 1989-08-19 1989-08-19 変換符号化方式
JP32452789A JP2503698B2 (ja) 1989-12-13 1989-12-13 変換符号化方式
JP1-324527 1989-12-13
JP89-324527 1989-12-13
JP90-11500 1990-01-19
JP2011500A JP2503706B2 (ja) 1990-01-19 1990-01-19 変換符号化方式
JP90-34658 1990-02-15
JP2034658A JPH0822064B2 (ja) 1990-02-15 1990-02-15 変換符号化方式

Publications (2)

Publication Number Publication Date
KR910005691A true KR910005691A (ko) 1991-03-30
KR930009872B1 KR930009872B1 (ko) 1993-10-12

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US (1) US5086488A (ko)
EP (1) EP0414074B1 (ko)
KR (1) KR930009872B1 (ko)
AU (1) AU622572B2 (ko)
CA (1) CA2023440C (ko)
DE (1) DE69016880T2 (ko)
FI (1) FI98111C (ko)
NO (1) NO303480B1 (ko)

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KR930009872B1 (ko) 1993-10-12
CA2023440A1 (en) 1991-02-20
FI98111C (fi) 1997-04-10
DE69016880D1 (de) 1995-03-23
US5086488A (en) 1992-02-04
CA2023440C (en) 1994-11-08
AU622572B2 (en) 1992-04-09

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