KR970057872A - Adaptive Vector Quantization Device in Image Signal Coding System - Google Patents

Adaptive Vector Quantization Device in Image Signal Coding System Download PDF

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Publication number
KR970057872A
KR970057872A KR1019950049801A KR19950049801A KR970057872A KR 970057872 A KR970057872 A KR 970057872A KR 1019950049801 A KR1019950049801 A KR 1019950049801A KR 19950049801 A KR19950049801 A KR 19950049801A KR 970057872 A KR970057872 A KR 970057872A
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KR
South Korea
Prior art keywords
vector quantization
edge
code
edge direction
code book
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KR1019950049801A
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Korean (ko)
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KR100197364B1 (en
Inventor
박기송
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배순훈
대우전자 주식회사
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Priority to KR1019950049801A priority Critical patent/KR100197364B1/en
Publication of KR970057872A publication Critical patent/KR970057872A/en
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Publication of KR100197364B1 publication Critical patent/KR100197364B1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00—Image coding
    • G06T9/008—Vector 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
    • H04N19/90—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
    • H04N19/94—Vector 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
    • H04N19/103—Selection of coding mode or of prediction mode

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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, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

본 발명은 영상 데이타를 기 설정 블럭으로 분할하여 DCT 변환을 수행한후 해당 블럭의 에지 성분 포함 여부에 따라 스칼라 양자화와 벡터 양자화를 선택적으로 실행하여 부호화를 수행하는 영상 부호화 시스템의 적응적 벡터 양자화 장치에 관한 것으로, 에지 성분을 포함한 DCT블럭의 에지 방향을 검출하는 에지 방향 검출부(201), 상기 에지 방향에 상응하는 코드들을 저장한 다수개의 부호책, 상기 에지 방향 검출부(201)에 의해 검출된 방향에 상응하는 부호책을 이용하여 벡터 양자화를 수행하는 벡터 양자화부(205)를 구비하여 구성한다.According to the present invention, an adaptive vector quantization apparatus of an image encoding system in which image data is divided into predetermined blocks to perform DCT transform, and then subjected to encoding by selectively performing scalar quantization and vector quantization according to whether the corresponding block includes edge components. An edge direction detection unit 201 for detecting an edge direction of a DCT block including an edge component, a plurality of code books storing codes corresponding to the edge direction, and a direction detected by the edge direction detection unit 201. And a vector quantization unit 205 for performing vector quantization using a code book corresponding thereto.

Description

영상 신호 부호화 시스템에서의 적응적 벡터 양자화 장치Adaptive Vector Quantization Device in Image Signal Coding System

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

제2도는 본 발명의 바람직한 실시예를 나타내는 상세 구성도.2 is a detailed block diagram showing a preferred embodiment of the present invention.

Claims (2)

영상 데이타를 기 설정 블럭으로 분할하여 DCT 변환을 수행한후 해당 블럭의 에지 성분 포함 여부에 따라 스칼라 양자화와 벡터 양자화를 선택적으로 실행하여 부호화를 수행하는 영상 부호화 시스템에 있어서; 상기 에지 성분을 포함한 DCT블럭의 에지 방향을 검출하는 에지 방향 검출부(201), 상기 에지 방향에 상응하는 코드들을 저장한 다수개의 부호책, 상기 에지 방향 검출부(201)에 의해 검출된 방향에 상응하는 부호책을 이용하여 벡터 양자화를 수행하는 벡터 양자화부(205)를 구비하여 구성한 적응적 벡터 양자화 장치.An image encoding system for performing encoding by dividing image data into predetermined blocks, performing DCT transformation, and selectively performing scalar quantization and vector quantization according to whether edge blocks of the corresponding block are included; An edge direction detector 201 for detecting an edge direction of the DCT block including the edge component; a plurality of code books storing codes corresponding to the edge direction; and a direction corresponding to the direction detected by the edge direction detector 201. An adaptive vector quantization apparatus comprising a vector quantization unit (205) for performing vector quantization using a code book. 제1항에 있어서, 상기 다수개의 부호책은 수평 방향 에지 성분을 포함한 블럭에 상응하는 코드를 저장한 제1 부호책(202), 수직 방향 에지 성분을 포함한 블럭에 상응하는 코드를 저장한 제2 부호책(203), 대각선 방향 에지 성분을 포함한 블럭에 상응하는 코드를 저장한 제3부호책(204)으로 구성한 적응적 벡터 양자화 장치.The code book of claim 1, wherein the plurality of code books comprises: a first code book 202 storing a code corresponding to a block including a horizontal edge component; a second code code corresponding to a block including a vertical edge component; An adaptive vector quantization device comprising a code book (203) and a third code book (204) storing codes corresponding to blocks including diagonal edge components. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950049801A 1995-12-14 1995-12-14 Apparatus for adaptively quantizing vectors in image encoding system KR100197364B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950049801A KR100197364B1 (en) 1995-12-14 1995-12-14 Apparatus for adaptively quantizing vectors in image encoding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950049801A KR100197364B1 (en) 1995-12-14 1995-12-14 Apparatus for adaptively quantizing vectors in image encoding system

Publications (2)

Publication Number Publication Date
KR970057872A true KR970057872A (en) 1997-07-31
KR100197364B1 KR100197364B1 (en) 1999-06-15

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100772391B1 (en) 2006-01-23 2007-11-01 삼성전자주식회사 Method for video encoding or decoding based on orthogonal transform and vector quantization, and apparatus thereof

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