KR960036741A - 디지탈 비디오 영상의 이산적 코사인 변환 방법 - Google Patents

디지탈 비디오 영상의 이산적 코사인 변환 방법 Download PDF

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Publication number
KR960036741A
KR960036741A KR1019960006701A KR19960006701A KR960036741A KR 960036741 A KR960036741 A KR 960036741A KR 1019960006701 A KR1019960006701 A KR 1019960006701A KR 19960006701 A KR19960006701 A KR 19960006701A KR 960036741 A KR960036741 A KR 960036741A
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field
discrete cosine
cosine transform
frame
digital video
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KR1019960006701A
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앤 홀 바바라
이 엥가이 아그네스
마이클 서튼 존
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윌리암 티. 엘리스
인터내셔널 비지네스 머신즈 코포레이션
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Publication of KR960036741A publication Critical patent/KR960036741A/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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/625—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using discrete cosine transform [DCT]
    • 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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/112—Selection of coding mode or of prediction mode according to a given display mode, e.g. for interlaced or progressive display mode
    • 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

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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)

Abstract

디지탈 비디오 영상(digital video image)의 이산적 코사인 변환(Discrete Cosine Transformation)의 방법이 개시된다. 개시된 방법에서 필드 변화(Field Variance) 및 프레임 변화(Frame Variance)가 계산된다. 필드 변화가 필드 변화보다 작은 경우 필드 이산적 코사인 변환형 변환이 수행된다. 대안적으로, 필드변화가 프레임 변화보다 작은 경우, 프레임 이산적 코사인 변환형 변환이 수행된다.

Description

디지탈 비디오 영상의 이산적 코사인 변환 방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 화상의 그룹을 형성하는 내측프레임, 예측프레임, 및 양방향 프레임의 관계를 도시하는 도면, 제2도는 이산적 코사인 변환 인코딩의 세 단계의 흐름도, 제3도는 본 발명의 동적으로 구획가능한 디지탈 비디오 인코더 프로세서의 흐름도, 제4도는 화소들, 예를 들면, 연속적인 라인들사이, 홀수 라인들 사이, 및 짝수 라인들 사이의 감산을 도시한 도면.

Claims (3)

  1. 디지탈 비디오 영상(a digital video image)의 이산적 코사인 변환(Discrete Cosine Transformation)의 방법에 있어서, 필드 변화(Field Variance)가 프레임 변화(Frame Variance)보다 작은 경우 필드 이산적 코사인 변환형(Field Discrete Cosine Transform type) 변환이 수행되고, 프레임 변화(Frame Variance)가 필드 변화보다 작은 경우, 프레임 이산적 코사인 변환형 변환이 수행되는 디지탈 비디오 영상의 이산적 코사인 변환 방법.
  2. 제1항에 있어서, 프레임 변화는 프레임 구조내의 인접한 라인들간의 절대 차의 합산에 의해 계산되는 디지탈 비디오 영상의 이산적 코사인 변환 방법.
  3. 제1항에 있어서, 상기 필드 변화는 두 부분, 즉, 필드 1(Field1) 및 필드(Field2)로 계산되되, 필드1는 프레임 구조내의 인접한 홀수 라인들간의 절대 차의 합산이고, 필드1 변화는 대체 홀수 라인들의 절대 차의 합산이며, 필드2는 대체 짝수 라인들에 의해 계산되는 디지탈 비디오 영상의 이산적 코사인 변환 방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019960006701A 1995-03-27 1996-03-13 디지탈 비디오 영상의 이산적 코사인 변환 방법 KR960036741A (ko)

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US41112695A 1995-03-27 1995-03-27
US08/411,126 1995-03-27

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KR960036741A true KR960036741A (ko) 1996-10-28

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US (1) US5737020A (ko)
JP (1) JPH08275160A (ko)
KR (1) KR960036741A (ko)

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US5737020A (en) 1998-04-07

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