KR910009094A - 영상신호부호화 방법 및 전송장치 - Google Patents

영상신호부호화 방법 및 전송장치 Download PDF

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KR910009094A
KR910009094A KR1019900016150A KR900016150A KR910009094A KR 910009094 A KR910009094 A KR 910009094A KR 1019900016150 A KR1019900016150 A KR 1019900016150A KR 900016150 A KR900016150 A KR 900016150A KR 910009094 A KR910009094 A KR 910009094A
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video signal
digital video
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data
quantization step
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요이찌 야가사끼
준 요네미쓰
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오가 노리오
소니 가부시기가이샤
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • 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
    • H04N19/115—Selection of the code volume for a coding unit prior to 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
    • H04N19/124—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
    • H04N19/14—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
    • H04N19/10—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
    • H04N19/169—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
    • H04N19/60—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
    • H04N19/124—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
    • H04N19/134—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

Abstract

내용 없음

Description

영상신호부호화방법 및 전송장치
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명에 의한 영상신호부호화방법을 사용한 화상 데이타발생장치를 나타내는 블록도,
제2도는 본원 발명에 의한 영상신호부호화방법의 제1실시예를 나타내는 플로챠트,
제3도는 부호화스텝을 할당하는 영역을 설명하기 위한 약선도.

Claims (9)

  1. 디지탈영상신호를 고능률부호화데이타로 양자화하도록 하여 이루어지는 영상신호부호화방법에 있어서, 전송할 소정의 화상정보를 나타내는 메인영역에 할당된 메인 영역전송허용데이타량을 상기 메인영역을 구성하는 서브영역에 대하여, 당해 서브영역의 디지탈영상신호량에 대응하는 서브 영역전송허용데이타량으로 분배하고, 상기 서브영역전송허용데이타량에 의거하여 당해 서브영역의 디지탈영상신호를 양자화할 때에 사용하는 양자화스텝을 결정하는 것을 특징으로 하는 영상신호부호화방법.
  2. 디지탈영상신호를 고능률부호화데이타로 양자화하도록 이루어지는 영상신호부호화방법에 있어서, 전송할 소정의 화상정보를 나타내는 메인영역의 디지탈영상 신호량과, 상기 메인영역을 구성하는 서브영역의 디지탈영상신호량과의 비에 의거하여, 당해 서브영역의 디지탈영상신호를 양자화할 때에 사용하는 양자화스텝을 결정하는 것을 특징으로 하는 영상신호부호화방법.
  3. 디지탈영상신호를 고능률부호화데이타로 양자화하도록 이루어지는 영상신호부호화방법에 있어서, 전송할 소정의 화상정보를 나타내는 메인영역을 구성하는 서브영역에 대하여, 그 디지탈영상신호량에 비례하는 양자화스텝을 구하고, 상기 양자화스텝에 의해서 서브영역의 상기 디지탈영상신호를 양자화함으로써, 상기 서브영역으로부터 대략 일정량의 데이타를 발생시키는 것을 특징으로 하는 영상신호부호화방법.
  4. 디지탈영상신호를 양자화스텝에 의해서 양자화함으로써 전송데이타를 발생하도록 이루어지는 영상신호부호화방법에 있어서, 전송할 화상정보량에 따라 상기 양자화스텝의 값을 변경제어하는 것을 특징으로 하는 영상신호부호화방법.
  5. 디지탈영상신호를 양자화스텝에 의해서 양자화함으로써 전송데이타를 발생하고, 당해 전송데이타를 전송버퍼메모리를 통해서 전송하도록 이루어지는 영상신호부호화방법에 있어서, 전송할 화상정보량과, 상기 전송버퍼메모리의 잔량을 나타내는 잔량데이타에 따라 상기 양자화스텝의 값을 변경제어하는 것을 특징으로 하는 영상신호부호화방법.
  6. 디지탈영상신호를 양자화스텝에 의해서 양자화함으로써 전송데이타를 발생하도록 이루어지는 영상신호부호화방법에 있어서, 전송하려고 하는 피부호화화상영역에 인접하는 인접화상영역에 대하여, 화상정보의 변화의 정도를 표시하는 정지도(靜止度)데이타를 발생하고, 상기 정지도데이타의 크기와, 상기 피부호화상영역의 움직임을 나타내는 움직임데이타에 의거하여 양자화스텝을 제어하는 것을 특징으로 하는 영상신호부호화방법.
  7. 디지탈영상신호를 양자화스텝에 의해서 양자화함으로써 전송데이타를 발생하도록 이루어지는 영상신호부호화방법에 있어서, 전송하려고 하는 피부호화화상영역에 인접하는 인접화상영역에 대해 화상정보의 변화의 정도를 나타내는 정지도데이타를 발생하고, 상기 정지도데이타의 크기와, 상기 피부호화화상영역의 움직임을 나타내는 동작데이타에 의거하여 변환율데이타를 구하고, 상기 변환율데이타에 의해서 버퍼메모리의 데이타잔량에 따라 정해지는 피드백양자화스텝을 변환하여 양자화스텝을 제어하는 것을 특징으로 하는 영상신호부호화방법.
  8. 디지탈영상신호를 양자화스텝에 의해서 양자화함으로써 전송데이타를 발생하도록 이루어지는 영상신호부호화방법에 있어서, 피부호화화상영역의 제1의 화상정보와, 상기 피부호화화상영역과 인접하는 인접화상영역의 제2의 화상정보와의 변화를 나타내는 차분정보를 구하고, 상기 차분정보에 의거하여 상기 피부호화화상영역의 디지탈 영상신호를 양자화할 때에 사용하는 양자화스텝을 결정하는 것을 특징으로 하는 영상신호부호화방법.
  9. 디지탈 영상신호를 고능률부호화하여 전송하는 영상신호전송 장치에 있어서, 1프레임분의 전송에 제공되는 화상정보량을 검출하는 동시에, 그 검출결과에 의거하여 소정영역마다의 한계치레벨을 설정하고, 당해 한계치레벨이상의 상기 화상정보량을 가진 상기 영역을 검출하여, 당해 영역의 공간주파수의 고역성분에 대해 양자화스텝을 크게하여 전송하도록 한 것을 특징으로 하는 영상신호전송장치.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900016150A 1989-10-14 1990-10-12 영상신호부호화 방법 및 전송장치 KR910009094A (ko)

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JP1-267049 1989-10-14
JP1267049A JPH03129987A (ja) 1989-10-14 1989-10-14 映像信号符号化装置及び映像信号符号化方法

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US (1) US5136376A (ko)
EP (2) EP0800316A3 (ko)
JP (1) JPH03129987A (ko)
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CA (1) CA2027526A1 (ko)

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