KR960040003A - Video encoding device - Google Patents

Video encoding device Download PDF

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Publication number
KR960040003A
KR960040003A KR1019950010594A KR19950010594A KR960040003A KR 960040003 A KR960040003 A KR 960040003A KR 1019950010594 A KR1019950010594 A KR 1019950010594A KR 19950010594 A KR19950010594 A KR 19950010594A KR 960040003 A KR960040003 A KR 960040003A
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South Korea
Prior art keywords
frame
dct
motion compensation
feature point
compensation
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KR1019950010594A
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Korean (ko)
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KR100200227B1 (en
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임종태
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배순훈
대우전자 주식회사
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Priority to KR1019950010594A priority Critical patent/KR100200227B1/en
Publication of KR960040003A publication Critical patent/KR960040003A/en
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Publication of KR100200227B1 publication Critical patent/KR100200227B1/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
    • H04N19/134—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
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51—Motion estimation or motion compensation
    • H04N19/513—Processing of motion vectors
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic 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

본 발명은 초저속 전송에 알맞는 고압축 영상 부호화 시스템에 관한 것으로, 이를 해결하기 위하여 입력되는 영상 프레임 신호를 블럭단위 움직음 보상 -DCT 방식과 특정점단위 움직임 보상 -DCT 방식에 따라 부호화를 수행될 수 있도록 선택하는 선택기 (30)와, 어느 한 움직임 보상 -DCT 방식에 의한 부호화가 선택되면, 입력되는 영상 프레임을 저장하는 제 1프레임 메모리 (50)와, 제 1, 2프레임 메모리 (42)(50)에서 복원되는 프레임들과 현재 입력되는 프레임을 근거로 어느 세트의 프레임에 대한 움직임 변위와 보상될 오차변위를 각각 제공하는 특징점 움직임 예측부 (60)와, 현재 입력되는 프레임과 특징점 움직임 예측부 (60)의 보상오차변위를 부호화하는 제 1부호기 (70)를 포함하도록 구성된다.The present invention relates to a high compression video encoding system suitable for ultra low speed transmission. To solve this problem, an input image frame signal is encoded according to block motion compensation -DCT and specific point motion compensation -DCT. A selector 30 for selecting a video signal, a first frame memory 50 for storing an input video frame, and a first and second frame memory 42 ( A feature point motion predictor 60 which provides a motion displacement for a set of frames and an error displacement to be compensated based on the frames reconstructed in step 50) and the currently input frame, and the currently input frame and the feature point motion predictor 60, respectively. And a first encoder (70) for encoding the compensation error displacement of (60).

Description

동영상 부호화장치Video encoding device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제 2도는 본 발명에 대한 동영상 부호화장치도, 제 3도는 제 2도의 세 종류의 움직임 보상 방법을 도시한 도면, 제 4도는 특징점이 아닌 점에 대한 움직임 변위를 검출하는 방법을 도시한 도면.2 is a diagram illustrating a video encoding apparatus according to the present invention, FIG. 3 is a diagram illustrating three types of motion compensation methods of FIG. 2, and FIG. 4 is a diagram illustrating a method of detecting a motion displacement with respect to a point that is not a feature point.

Claims (3)

비디오 신호의 현재 프레임과 예측된 현재 프레임을 이용하여 부호화하고, 이 부호된 프레임을 복호화하며, 이전 프레임으로 제 2프레임 메모리 (42)에 저장하며, 이 복원된 프레임과 현프레임 간을 움직임 추정부에서 예측하며, 엔트로티피 부호기등을 구비한 부호화 장차에 있어서 ; 입력되는 영상 프레임 신호를 블럭단위 움직임 보상 -DCT 방식과 특징점단위 움직임 보상 -DCT 방식에 따라 부호화를 수행될 수 있도록 선택하는 선택기 (30)와 ; 상기 선택기 (30)에 의해 어느 한 움직임 보상 -DCT 방식에 의한 부후화가 선택되면, 상기 입력되는 영상 프레임을 저장하는 제 1프레임 메모리 (50)와 ; 상기 제 1,2프레임 메모리 (42)(50)에서 복원되는 프레임들과 현재 입력되는 프레임을 근거로 어느 세트의 프레임에 대한 움직임 변위와 보상될 오차변위를 각각 제공하는 특징점 움직임 예측부 (60)와 ; 현재 입력되는 프레임과 상기 특징점 움직임 예측부 (60)의 보상오차변위를 부호화하는 제 1부호화기 (70)를 포함함을 특징으로 하는 동영상 부호화장치.The current frame and the predicted current frame of the video signal are encoded, the coded frame is decoded, and stored in the second frame memory 42 as a previous frame. In the encoding process, which is predicted by an entropy encoder and the like; A selector 30 for selecting an input image frame signal to be encoded according to a block-based motion compensation -DCT scheme and a feature point-based motion compensation -DCT scheme; A first frame memory (50) for storing the input image frame when the deterioration by any one of the motion compensation -DCT schemes is selected by the selector (30); A feature point motion predictor 60 which provides a motion displacement and an error displacement to be compensated for a set of frames based on the frames reconstructed in the first and second frame memories 42 and 50 and the currently input frame. Wow ; And a first encoder (70) for encoding a currently input frame and a compensation error displacement of the feature point motion predictor (60). 제 1항에 있어서, 상기 특징점 움직임 예측부 (60)는, 상기 포워드점 단위 움직임 보상 -DCT의 부호화와 상기 백워드점 단위 움직임 보상 -DCT의 부호화 및 상기 양방향단위 움직임 보상 -DCT의 부호화를 실시함과 더불어 어느 한 부호화된 움직임이 보상된 프레임만을 선택함을 특징으로 하는 동영상 부호화장치.The method of claim 1, wherein the feature point motion predictor 60 encodes the forward point unit motion compensation -DCT and the backward point unit motion compensation -DCT encoding and the bidirectional unit motion compensation -DCT encoding. In addition, the video encoding apparatus, characterized in that for selecting only the frame in which one coded motion is compensated. 제 1항 또는 제 2항에 있어서, 상기 양방향단위 움직임 보상 -DCT는, 상기 포워드단위 움직임 보상 -DCT의 부호화된 프레임 신호와 상기 백워드단위 움직임 보상 -DCT의 부호화된 프레임 신호를 평균하여 구함을 특징으로 하는 동영상 부호화장치.The method of claim 1 or 2, wherein the bidirectional unit motion compensation -DCT is obtained by averaging the encoded frame signal of the forward unit motion compensation -DCT and the encoded frame signal of the backward unit motion compensation -DCT. A video encoding apparatus characterized by the above. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950010594A 1995-04-29 1995-04-29 Motion picture encoder KR100200227B1 (en)

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KR960040003A true KR960040003A (en) 1996-11-25
KR100200227B1 KR100200227B1 (en) 1999-06-15

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