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KR960033128A - 디지탈 영상 복호화 방법 - Google Patents

디지탈 영상 복호화 방법 Download PDF

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Publication number
KR960033128A
KR960033128A KR1019950003964A KR19950003964A KR960033128A KR 960033128 A KR960033128 A KR 960033128A KR 1019950003964 A KR1019950003964 A KR 1019950003964A KR 19950003964 A KR19950003964 A KR 19950003964A KR 960033128 A KR960033128 A KR 960033128A
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South Korea
Prior art keywords
block
average value
boundary
average
signal data
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KR1019950003964A
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KR0174453B1 (ko
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김상호
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배순훈
대우전자 주식회사
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Priority to KR1019950003964A priority Critical patent/KR0174453B1/ko
Priority to US08/595,141 priority patent/US5757969A/en
Priority to JP2235196A priority patent/JP3678481B2/ja
Priority to CN96101254A priority patent/CN1121120C/zh
Publication of KR960033128A publication Critical patent/KR960033128A/ko
Application granted granted Critical
Publication of KR0174453B1 publication Critical patent/KR0174453B1/ko

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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
    • H04N19/85—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

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

Abstract

본 발명은 디지털 영상 복호화 방법에 관한 것으로, 프레임 메모리에 저장되어 있는 이전 블록의 영상신호 데이타 중에 현재 블록에 인접한 블록의 경계부 추정값이 경계부 평균값 추정부에서 다음과 같은 식에 의해 계산되고,
E = (2b － a ＋ ad－ c)/2 (식)
식에서 a는 현재 블록에 인접한 하나의 경계부 평균값이고, b는 그 블록의 a 바로 이전의 경계부 평균값, c는 현재 블록에 인접한 다른 하나의 블록 경계부 평균값, d는 이 블록의 c 바로 이전의 경계부 평균값이다.
이 추정값(E)과 현재 블록의 경계화소 평균값(B)의 차이가 0 ≤│E-B│ ≤ ½STEP 범위로 제한되므로써, 이전블럭의 경계화소 평균값이 계산에 의해 보다 정확하게 추정되므로, 영상신호 데이터의 양자화 및 역양자화시에 영상신호 데이터의 유실로 인한 블록킹 현상을 보다 효과적으로 제거할 수 있을 뿐만 아니라 보다 깨끗하고 선명한 화질을 갖는 영상을 디스플레이할 수 있도록 한 것이다.

Description

디지털 영상 복호화 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명의 바랍직한 실시예에 따른 디지털 영상 복호화장치의 개략적인 블록구성도,
제2도는 제1도의 DC값 재조정부의 상셰도,
제3도는 본 발명의 일실시예로서 데이터블럭을 도시한 도면.

Claims (1)

  1. 움직임 보상 차분 부호화되어 입력되는 현재 프레임의 영상신호 데이터를 가변길이 복화화 부단과 역이산코사인 변환수단을 통해 원래의 영상신호 데이터로 복원하여, 이 복원된 현재 프레임의 블록경계부 평균값과 프레임 메모리에 저장되어 있는 이전 프레임의 블록경계부 평균값을 추정하여 움직임 보상을 실행함으로써, 차분 부호화된 영상신호를 원신호를 복원하는 디지털 영상 복호화 방법에 있어서, 상기 이전 프레임의 블록경계부 평균값 추성은 하기의 식에 의해 수행되며,
    E ＝ (2B－ A＋2D－C)/2
    상기 식에서 A는 상기 현재 프레임의 블록과 인접한 하나의 블록경계부 평균값, B는 상기 A 바로 이전의 평균값, C는 상기 현재 프레임의 블록과 인접한 다른 하나의 블록경계부 평균값, D는 상기 C 바로 이전의 평균값인 것을 특징으로 하는 디지털 영상 복호화 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019950003964A 1995-02-28 1995-02-28 디지털 영상 복호화 방법 KR0174453B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019950003964A KR0174453B1 (ko) 1995-02-28 1995-02-28 디지털 영상 복호화 방법
US08/595,141 US5757969A (en) 1995-02-28 1996-02-01 Method for removing a blocking effect for use in a video signal decoding apparatus
JP2235196A JP3678481B2 (ja) 1995-02-28 1996-02-08 映像データ後処理方法
CN96101254A CN1121120C (zh) 1995-02-28 1996-02-08 用于视频信号解码装置中用以去除分块效应的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950003964A KR0174453B1 (ko) 1995-02-28 1995-02-28 디지털 영상 복호화 방법

Publications (2)

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KR960033128A true KR960033128A (ko) 1996-09-17
KR0174453B1 KR0174453B1 (ko) 1999-03-20

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US (1) US5757969A (ko)
JP (1) JP3678481B2 (ko)
KR (1) KR0174453B1 (ko)
CN (1) CN1121120C (ko)

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Also Published As

Publication number Publication date
CN1134088A (zh) 1996-10-23
CN1121120C (zh) 2003-09-10
US5757969A (en) 1998-05-26
KR0174453B1 (ko) 1999-03-20
JPH08265761A (ja) 1996-10-11
JP3678481B2 (ja) 2005-08-03

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