KR970025158A - Video encoder - Google Patents

Video encoder Download PDF

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Publication number
KR970025158A
KR970025158A KR1019950038521A KR19950038521A KR970025158A KR 970025158 A KR970025158 A KR 970025158A KR 1019950038521 A KR1019950038521 A KR 1019950038521A KR 19950038521 A KR19950038521 A KR 19950038521A KR 970025158 A KR970025158 A KR 970025158A
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KR
South Korea
Prior art keywords
frame
image
forming unit
information
unit
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Application number
KR1019950038521A
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Korean (ko)
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KR100213283B1 (en
Inventor
이상일
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배순훈
대우전자 주식회사
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Priority to KR1019950038521A priority Critical patent/KR100213283B1/en
Publication of KR970025158A publication Critical patent/KR970025158A/en
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Publication of KR100213283B1 publication Critical patent/KR100213283B1/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
    • H04N19/10—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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • H04N19/10—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
    • H04N19/186—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 colour or a chrominance component
    • 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]

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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 움직임의 큰 동영상인 경우에 이 동영상의 회도 및 칼러신호를 선택적으로 부호화하는 장치에 관한 것으로, 이를 해결하기 위하여 입력 영상을 프레임 형성부에 의해서 프레임 단위로 구현하고, 이 구현된 프레임을 순차적으로 제공하며, 이로부터의 현재 프레임과 예측된 프레임간의 차분값을 DCT, 양자화 및 VLC 등을 이용하여 부호화는 장치에 있어서, 프레임 형성부로부터 제공되는 프래임과 이 프레임의 다음번째로 입력되는 프레임간에 의거하여 프레임에 대한 부호화 정보를 분석하는 이미지 분리부, 이미지 분석부의 분석정보에 의거하여 상기 프레임과 예측된 프레임간의 차분신호의 부호화를 제어하는 이미지 제어부로 구성됨으로써, 정지영상과 동영상을 판별함과 아울러 이에 따른 부호화를 효율적으로 할 수 있는 효과가 있다.The present invention relates to a device for selectively encoding the video and color signals of a moving picture in the case of a large moving picture. To solve this problem, an input image is implemented by a frame forming unit in a frame unit. And sequentially encode the difference value between the current frame and the predicted frame using DCT, quantization, VLC, etc., wherein the frame provided from the frame forming unit and the next input of the frame Image separation unit for analyzing the encoding information on the frame based on the frame, and an image control unit for controlling the encoding of the difference signal between the frame and the predicted frame based on the analysis information of the image analysis unit to determine a still image and a video In addition, there is an effect that can be efficiently encoded accordingly.

Description

동영상 부호화기Video encoder

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

제2도는 본 발명에 따른 동영상 부호화장치를 도시한 블럭구성도2 is a block diagram showing a video encoding apparatus according to the present invention.

Claims (3)

입력 영상을 프레임 형성부에 의해서 프레임 단위로 구현하고, 이 구현된 프레임을 순차적으로 제공하며, 이로부터의 현재 프레임과 예측된 프레임간의 차분값을 DCT, 양자화 및 VLC등을 이용하여 부호화는 장치에 있어서; 상기 프레임 형성부로부터 제공되는 프레임과 이 프레임의 다음번째로 입력되는 프레임간에 의거하여 상기 프레임에 대한 부호화 정보를 분석하는 이미지 분리부(23O)와; 상기 이미지 분석부(210)의 분석정보에 의거하여 상기 프레임과 예측된 프레임간의 차분신호의 부호화를 제어하는 이미지 제어부(240)로 구성됨을 특징으로 하는 동영상 부호화기.The input image is implemented on a frame-by-frame basis by the frame forming unit, and the implemented frames are sequentially provided, and the difference value between the current frame and the predicted frame is encoded using DCT, quantization, and VLC. In; An image separator (230) for analyzing encoding information on the frame based on a frame provided from the frame forming unit and a frame input next to the frame; And an image controller (240) for controlling encoding of the difference signal between the frame and the predicted frame based on the analysis information of the image analyzer (210). 제1항에 있어서, 상기 이미지 분리부(23O)는, 상기 프레임 형성부(202)로부터 제공되는 프레임과 다음번째로 입력되는 프레임간에 의거하여 상기 프레임이 동영상인지 또는 정지영상인지를 분석함과 아울러 상기 프레임에 대한 휘도 및 칼러정보를 분석함을 특징으로 하는 동영상 부호화기.The method of claim 1, wherein the image separation unit (230) analyzes whether the frame is a video or a still image based on a frame provided from the frame forming unit (202) and a next input frame. And a luminance and color information of the frame. 제2항에 있어서, 상기 프레임이 동영상인지 또는 정지영상인지의 분석은, 상기 프레임 형성부(202)로부터 제공되는 프레임과 다음번째의 입력되는 프레임간의 차분신호가 기설정된 임계값보다 큰 경우에는, 움직임이 큰 동영상으로 간주하고, 기설정된 임계값보다 작은 경우에는, 움직임이 작은 정지영상으로 간주하는 제어정보를 발생되도록 구성됨을 특징으로 하는 동영상 부호화기.The method of claim 2, wherein the analysis of whether the frame is a moving picture or a still image comprises: when the difference signal between the frame provided from the frame forming unit 202 and the next input frame is larger than a preset threshold value, And a motion information that is regarded as a large motion picture and is smaller than a preset threshold, and generates control information that regards the motion as a small still picture.
KR1019950038521A 1995-10-31 1995-10-31 Moving picture encoder KR100213283B1 (en)

Priority Applications (1)

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KR1019950038521A KR100213283B1 (en) 1995-10-31 1995-10-31 Moving picture encoder

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Application Number Priority Date Filing Date Title
KR1019950038521A KR100213283B1 (en) 1995-10-31 1995-10-31 Moving picture encoder

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KR970025158A true KR970025158A (en) 1997-05-30
KR100213283B1 KR100213283B1 (en) 1999-08-02

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100377240B1 (en) * 2000-02-22 2003-03-28 김태원 Method of compressing and restoring data for moving pictures

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101251000B1 (en) 2011-11-22 2013-04-04 건국대학교 산학협력단 Method for controlling quantization parameter for real time video communication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100377240B1 (en) * 2000-02-22 2003-03-28 김태원 Method of compressing and restoring data for moving pictures

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