KR930015839A - Data Selection Method and Circuit for Image Compression in 3D Subband Coded Image System - Google Patents

Data Selection Method and Circuit for Image Compression in 3D Subband Coded Image System Download PDF

Info

Publication number
KR930015839A
KR930015839A KR1019910025314A KR910025314A KR930015839A KR 930015839 A KR930015839 A KR 930015839A KR 1019910025314 A KR1019910025314 A KR 1019910025314A KR 910025314 A KR910025314 A KR 910025314A KR 930015839 A KR930015839 A KR 930015839A
Authority
KR
South Korea
Prior art keywords
image
msb
signal
selection
bands
Prior art date
Application number
KR1019910025314A
Other languages
Korean (ko)
Other versions
KR0164770B1 (en
Inventor
윤대희
김원재
이정래
이종대
Original Assignee
강진구
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019910025314A priority Critical patent/KR0164770B1/en
Publication of KR930015839A publication Critical patent/KR930015839A/en
Application granted granted Critical
Publication of KR0164770B1 publication Critical patent/KR0164770B1/en

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T9/00Image coding
    • G06T9/007Transform coding, e.g. discrete cosine transform
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00Colour television systems
    • H04N11/04Colour television systems using pulse code modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

3차원 서브 밴드 부호화 영상처리에서의 영상 압축을 위한 주파수 대역 신호선택 방법에 있어서, 영상 취득 매체로 부터 얻어진 RGB영상신호를 Y,I,Q신호를 변환하고 상기 변환된 Y,I,Q 신호를 공간(수직,수평) 시간축으로 소정 밴드로 총 n개의 주파수 성분을 가진 신호로 분할한다.A frequency band signal selection method for image compression in three-dimensional subband encoded image processing, comprising: converting Y, I, Q signals from RGB image signals obtained from an image acquisition medium, and converting the converted Y, I, Q signals The signal is divided into signals having a total of n frequency components in predetermined bands on a spatial (vertical and horizontal) time axis.

상기에서 분할된 n개의 서브 밴드중 주어진 영상의 중요한 역할을 하는 최소한 낮은 주파수 대역은 항시 전송하고 상기 낮은 주파수 대역을 제외한 대역의 성분을 6MHZ의 대역폭을 갖는 채널로 전송키 위해 다시 서브 블럭으로 분할한 후 높은 에너지를 갖는 순서대로 선택하여 전송한다.Among the n subbands divided above, at least the low frequency band which plays an important role in a given image is always transmitted, and the subbands are divided into subblocks in order to transmit components of the band except the low frequency band to a channel having a bandwidth of 6 MHz. Then select and send in order of having high energy.

Description

3차원 서브밴드 부호화 영상시스템에서 영상압축을 위한 데이타 선택방법 및 회로Data Selection Method and Circuit for Image Compression in 3D Subband Coded Image System

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

제1도는 본 발명에 따른 전체시스템도, 제2도는 본 발명에 따른 Y,I,O 각 성분이 트랜스폼/서브밴드 8×8×3개의 밴드 분할예시도, 제3도는 본 발명에 따른 MSB검색 적응선택 흐름도.FIG. 1 is an overall system diagram according to the present invention, FIG. 2 is an example of splitting bands of 8x8x3 bands for each of Y, I, O components according to the present invention, and FIG. 3 is an MSB according to the present invention. Search adaptation flow chart.

Claims (4)

3차원 서브 밴드 부호화 영상처리에서의 영상 압축을 위한 주파수 대역 신호선택 방법에 있어서, 영상 취득 매체로 부터 얻어진 RGB영상신호를 Y,I,Q신호를 변환하는 매트릭스변환 과정과, 상기 매트릭스변환 과정에서 변환된 Y,I,Q신호를 공간(수직,수평)시간축으로 소정 밴드로 총 n개의 주파수 성분을 가진 신호로 분할하는 트랜스폼/서브 밴드분석 과정과, 상기 트랜스폼/서브 밴드분석 과정에서 분할된 n개의 서브 밴드충 주어진 영상의 중요한 역할을 하는 최소한 낮은 주파수 대역은 항시 전송하고 상기 낮은 주파수 대역을 제외한 대역의 성분은 6MHZ의 대역폭을 갖는 채널로 전송키 위해 다시 서브 블럭으로 분할한후 높은 에너지를 갖는 순서대로 선택하는 적응선택 과정으로 이루어짐을 특징으로 하는 3차원 서브 밴드 부호화 영상시스템에서 영상압축을 위한 데이타 선택방법.A frequency band signal selection method for image compression in three-dimensional subband encoded image processing, comprising: a matrix conversion process of converting an RGB image signal obtained from an image acquisition medium into a Y, I, and Q signal; A transform / subband analysis process for dividing the transformed Y, I, Q signal into a signal having a total of n frequency components in a predetermined band on a spatial (vertical, horizontal) time axis, and in the transform / subband analysis process At least n subbands always transmit at least the low frequency band, which plays an important role in a given image, and the components of the band except the low frequency band are divided into subblocks to be transmitted to a channel having a bandwidth of 6 MHz, and then high energy. Image pressure in a three-dimensional subband encoded video system characterized in that the adaptive selection process is selected in order with How to select data for the axis. 제1항에 있어서, 적응선택 과정이, 총 처리할 서브 블럭수와 각 블럭에 대한 값을 나타내는 총 비트 및 선택 서브 블럭 인덱스와 처리할 MSB선택을 위한 초급갑승 지정하는 초기화 과정과, 상기 선택 첫번째 서브 블럭부터 MSB의 상태를 체킹하는 MSB체킹 과정과, 상기 MSB체킹 과정에서 MSB의 값이 있을때 이전 선택 서브 블럭 인덱스 값을 읽어 전송고자 하는 평균 대역수에 도달했는가를 체킹하는 선택 서브 블럭 인덱스 검색과정과, 상기 MSB체킹 과정에서 MBS의 값이 없을때와 상기 선택서브 블럭인덱스 검색 과정에서 해당 평균 대역수에 도달하지 못했을시 MSB검색할 블럭수를 증가시키는 전체 블럭 검색여부 체킹 과정과, 상기 전체 블럭 검색여부 체킹 과정에서 전체 검색할 블럭수에 도달했을시 다음 비트의 MSB 체킹을 위한 비트를 지정하는 MSB검색 비트 저정 과정으로 이루어짐을 특징으로 하는 3차원 서브 밴드 부호화 영상시스템에서 영상압축을 위한 데이타 선택방법.2. The method of claim 1, wherein the adaptive selection process comprises: an initializing step of specifying a total number of subblocks to be processed, a value for each block, a selection subblock index, and a beginner-sequence for MSB selection to be processed; MSB checking process of checking the state of MSB from the sub-blocks, and selecting subblock index searching process of checking whether the average number of bands to be transmitted is reached by reading the previous selected subblock index value when the MSB value is present in the MSB checking process. And, if there is no MBS value in the MSB checking process, and if the average number of bands is not reached during the selection sub-block index search process, the entire block search status checking process to increase the number of blocks to search MSB, and the entire block MSB search bit that designates bit for MSB checking of next bit when the number of blocks to search is reached Data selection method for image coding in a three-dimensional subband image coding system as claimed in the process constituted by any forward. 제2항에 있어서, MBS 검색 비트지정 과정이, 상기 각 블럭의 MSB를 체크하여도 전송할 평균 대역수에 도달하지 못했을시 취하도록 함을 특징으로 하는 3차원 서브 밴드 부호화 영상시스템에서 영상압축을 위한 데이타 선택방법.3. The method of claim 2, wherein the MBS search bit designation process is performed when the average number of bands to be transmitted is not reached even when the MSB of each block is checked. Data selection method. 3차원 서브 밴드 부호화 영상처리에서의 영상 압축을 위한 주파수 대역 신호 선택 회로에 있어서, 영상 취득 매체로 부터 얻어진 RGB영상신호를 Y,I,Q 신호를 변화하는 매트릭스변환 수단과, 상기 매트릭스변환 수단에서 변환된 Y,I,Q 신호를 공간(수직, 수평)시간축으로 소정 밴드로 총 n개의 주파수 성분을 가진 신호로 분할하는 트랜스폼/서브 밴드분석 수단과, 상기 트랜스폼/서브 밴드분석 수단에서 분할된 n개의 서브 밴드중 주어진 영상의 중요한 역할을 하는 최소한 낮은 주파수 대역은 항시 전송하고 상기 낮은 주파수 대역을 제외한 대역의 성분을 6MHZ의 대역폭을 갖는 채널로 전송키 위해 다시 서브 블럭으로 분할한후 높은 에너지를 갖는 순서대로 선택하는 적응선택 수단으로 이루어짐을 특징으로 하는 3차원 서브 밴드 부호화 영상시스템에서 영상압축을 위한 데이타 선택회로.A frequency band signal selection circuit for image compression in three-dimensional subband encoded image processing, comprising: matrix conversion means for changing Y, I, Q signals from an RGB image signal obtained from an image acquisition medium, Transform / subband analysis means for dividing the transformed Y, I, Q signal into a signal having a total of n frequency components in a predetermined band on a spatial (vertical, horizontal) time axis, and splitting in the transform / subband analysis means At least the low frequency bands, which play an important role in a given image, of the n subbands, are always transmitted, and the high energy is divided into subblocks in order to transmit components of the bands except the low frequency bands to a channel having a bandwidth of 6 MHZ. In the three-dimensional subband encoded video system, characterized in that the adaptive selection means for selecting in order with Data selection circuit for compression. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910025314A 1991-12-30 1991-12-30 Data selection circuit for image compression in three dimension subband coding system KR0164770B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910025314A KR0164770B1 (en) 1991-12-30 1991-12-30 Data selection circuit for image compression in three dimension subband coding system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910025314A KR0164770B1 (en) 1991-12-30 1991-12-30 Data selection circuit for image compression in three dimension subband coding system

Publications (2)

Publication Number Publication Date
KR930015839A true KR930015839A (en) 1993-07-24
KR0164770B1 KR0164770B1 (en) 1999-03-20

Family

ID=19326826

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910025314A KR0164770B1 (en) 1991-12-30 1991-12-30 Data selection circuit for image compression in three dimension subband coding system

Country Status (1)

Country Link
KR (1) KR0164770B1 (en)

Also Published As

Publication number Publication date
KR0164770B1 (en) 1999-03-20

Similar Documents

Publication Publication Date Title
RU2221329C2 (en) Data coding method and device, data decoding method and device, data recording medium
CA2104287C (en) Method and apparatus for encoding of data using both vector quantitization and runlength encoding and using adaptive runlength encoding
US5510785A (en) Method of coding a digital signal, method of generating a coding table, coding apparatus and coding method
US5197087A (en) Signal encoding apparatus
TW533405B (en) Perceptual audio signal compression system and method
EP0562420B1 (en) Method and apparatus for vector coding of video transform coefficients
US5063608A (en) Adaptive zonal coder
CN100456638C (en) Treating method for sound frequency data and nondamage decoding method
JP2745301B2 (en) Orthogonal transform coding method for image data
CA2520652A1 (en) Combined runlength coding and variable length coding for video compression
KR940023242A (en) Adaptive Compression of Digital Video Data
KR900002640A (en) Adaptive Conversion Coder
EP0876709A2 (en) Data compression/expansion using a rice encoder/decoder
JPS62173870A (en) Orthogonal transform coding method for picture data
US5802369A (en) Energy-based wavelet system and method for signal compression and reconstruction
WO1999053677A2 (en) Lossless encoding/decoding in a transmission system
RU94046112A (en) METHOD FOR REDUCING THE DATA NUMBER WHEN TRANSMITTING AND / OR ACCUMULATING DIGITAL SIGNALS COMING FROM MULTIPLE RELATED CHANNELS
JP3292221B2 (en) Image compression coding method
US4862262A (en) Method of compressing image signals by vector quantization
KR930015839A (en) Data Selection Method and Circuit for Image Compression in 3D Subband Coded Image System
Hung et al. New irregular sampling coding method for transmitting images progressively
KR0148152B1 (en) Adaptive variable length coding/decoding method and apparatus of image data
KR100216600B1 (en) Method of transmitting multi-code for vector quantizer of image signal
JPH05316355A (en) Picture data coding and decoding device
EP1363283A2 (en) Data compression/expansion on a plurality of digital information signals

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20050830

Year of fee payment: 8

LAPS Lapse due to unpaid annual fee