KR960028440A - Video Coding Device Using Fractal Coding Technique - Google Patents

Video Coding Device Using Fractal Coding Technique Download PDF

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KR960028440A
KR960028440A KR1019940034112A KR19940034112A KR960028440A KR 960028440 A KR960028440 A KR 960028440A KR 1019940034112 A KR1019940034112 A KR 1019940034112A KR 19940034112 A KR19940034112 A KR 19940034112A KR 960028440 A KR960028440 A KR 960028440A
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South Korea
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fractal
mode
image
encoder
coding
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KR1019940034112A
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Korean (ko)
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KR0159566B1 (en
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김종락
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배순훈
대우전자 주식회사
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/001—Model-based coding, e.g. wire frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 프랙탈 영상 부호화기법을 이용한 동영상 부호화장치에 관한 것으로, 입력영상과 움직임 보상된 영상과의 차이영상에 대하여 프랙탈 코딩을 적용하는 인터프레임 코딩에 있어서 입력영상과 움직임 보상된 영상으로 부터 선택된 모드별로 프랙탈 코딩을 적용함으로써 부호화 효율을 개선한 것이다.The present invention relates to a video encoding apparatus using a fractal image coding technique, wherein a mode selected from an input image and a motion compensated image in interframe coding applying fractal coding to a difference image between an input image and a motion compensated image By applying fractal coding, the coding efficiency is improved.

Description

프랙탈 부호화기법을 이용한 동영상 부호화장치Video Coding Device Using Fractal Coding Technique

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 바람직한 실시예에 따른 프랙탈 영상 부호화 기법을 이용한 동영상 부호화장치의 블럭구성도, 제2도는 종래의 전형적인 프랙탈 부호화기법을 이용한 동영상 부호화 장치의 블럭구성도.1 is a block diagram of a video encoding apparatus using a fractal image encoding method according to a preferred embodiment of the present invention, and FIG. 2 is a block diagram of a video encoding apparatus using a conventional typical fractal encoding method.

Claims (4)

입력영상과 각 영상의 움직임 추정/보상된 차이영상을 통한 프랙탈 부호화기법을 이용하여 동영상을 부호화하여 전송채널을 통해 전송하는 부호화장치에 있어서, 상기 입력영상과 움직임 보상된 각 영상에서 구한 블럭의 에러와 미리 설정해 놓은 문턱값을 비교하여 그에 상응하는 모드값을 선택하기 위한 모드선택기: 상기 모드선택기에서 선택된 모드값에 따라 상기 입력영상에 대하여 프랙탈 부호화를 수행하기 위한 프랙탈 엔코더; 상기 모드선택기에서 출력되는 선택된 모드값과 움직임 보상된 영상을 상기 프랙탈 엔코더에서 출력되는 프랙탈 코드와 함께 복호화하기 위한 프랙탈 디코더; 상기 프랙탈 디코더에서 복호화된 영상에 대하여 움직임의 추정 및 보상을 수행하여, 움직임 보상된 영상을 상기 모드선택기로 출력하기 위한 움직임 추정/보상부; 상기 움직임추정/보상부에서 출력되는 움직임벡터를 이용하여 상기 프랙탈 엔코더에서 부호화된 영상에 대하여 가변장 부호화를 수행하기 위한 가변장 부호화기; 및 상기 모드선택에서 출력되는 영상신호와 상기 가변장 부호화기의 출력신호를 선택적으로 절환하여 상기 전송채널로 전송하기 위한 절환수단으로 이루어진 프랙탈 부호화기법을 이용한 동영상 부호화장치.An encoding apparatus for encoding a video by using a fractal encoding method using an input image and a motion estimation / compensated difference image of each image and transmitting the same through a transmission channel, wherein an error of a block obtained from the input image and each motion compensated image is obtained. A mode selector for selecting a mode value corresponding to the preset threshold value by comparing with a preset threshold value: a fractal encoder for performing fractal encoding on the input image according to the mode value selected by the mode selector; A fractal decoder for decoding the selected mode value and the motion compensated image output from the mode selector together with the fractal code output from the fractal encoder; A motion estimation / compensation unit for performing motion estimation and compensation on the image decoded by the fractal decoder and outputting the motion compensated image to the mode selector; A variable length encoder for performing variable length coding on an image encoded by the fractal encoder using the motion vector output from the motion estimation / compensator; And switching means for selectively switching the video signal output from the mode selection and the output signal of the variable length encoder to be transmitted to the transmission channel. 제1항에 있어서, 상기 모드선택기에서 선택되는 모드는 no_tr 모드와 tr모드로 인것을 특징으로 하는 프랙탈 부호화기법을 이용한 동영상 부호화장치.The video encoding apparatus of claim 1, wherein the mode selected by the mode selector is a no_tr mode and a tr mode. 제2항에 있어서, 상기 모드선택기는 상기 블럭에러가 미리 설정해 놓은 문턱값 보다 작으면 상기 프랙탈 엔코더에서 트랜스폼을 보내지 않도록 하기 위하여 그 블럭을 no_tr 모드로 선택하는 것을 특징으로 하는 프랙탈 부호화기법을 이용한 동영상 부호화장치.The fractal selector of claim 2, wherein the mode selector selects the block as a no_tr mode so that the fractal encoder does not send a transform when the block error is smaller than a preset threshold. Video encoding device. 제2항에 있어서, 상기 모드선택기는 상기 블럭에러가 미리 설정해 놓은 문턱값 보다 크면 상기 프랙탈 엔코더에서 통상적인 프랙탈 코딩처럼 입력영상 내부에서 트랜스폼을 찾아 전송하도록 하기 위하여 그 블럭을 tr 모드로 선택하는 것을 특징으로 하는 프랙탈 부호화기법을 이용한 동영상 부호화장치.3. The method of claim 2, wherein the mode selector selects the block in tr mode so that the fractal encoder finds and transmits a transform in the input image as in the normal fractal coding if the block error is greater than a preset threshold. A video encoding apparatus using a fractal encoding method. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940034112A 1994-12-14 1994-12-14 Image coder using a fractal image coding KR0159566B1 (en)

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KR0159566B1 KR0159566B1 (en) 1999-01-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100449397B1 (en) * 2001-11-13 2004-09-18 아이마스터 주식회사 Apparatus to improve compression rate for digital motion images

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100449397B1 (en) * 2001-11-13 2004-09-18 아이마스터 주식회사 Apparatus to improve compression rate for digital motion images

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