KR960013058A - Encoding Device of Residual Image Component - Google Patents

Encoding Device of Residual Image Component Download PDF

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KR960013058A
KR960013058A KR1019940024870A KR19940024870A KR960013058A KR 960013058 A KR960013058 A KR 960013058A KR 1019940024870 A KR1019940024870 A KR 1019940024870A KR 19940024870 A KR19940024870 A KR 19940024870A KR 960013058 A KR960013058 A KR 960013058A
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iir filter
filter coefficient
image
signal
transmitting
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KR1019940024870A
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KR0159562B1 (en
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황덕동
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배순훈
대우전자 주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/42Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods 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
    • H04N19/124Quantisation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/189Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00Networks using digital techniques
    • H03H2017/0072Theoretical filter design
    • H03H2017/009Theoretical filter design of IIR filters
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2218/00Indexing scheme relating to details of digital filters
    • H03H2218/02Coefficients

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)

Abstract

본 발명은 원 영상 신호와 복원 영상 사이에서 발생하는 잔차 영상 성분을 부호화하여 전송하는 잔차 영상성분의 부호화 장치에 관한 것으로, 입력되는 원 영상 신호를 압축 부호화를 수행하여 수신측에 전송하는 부호화수단, 상기 부호화부(11)에 의해 부호화된 영상을 복호화하는 복호화 수단, 상기 원 영상 신호와 복호화된 영상 신호 사이에서 발생하는 잔차 신호를 검출하는 전차 신호 검출 수단, AR 모델링 기법을 이용하여 상기 잔차 신호를 입력으로 하고 상기 부호화수단에 의해 부호화된 영상을 출력으로 하는 IIR 필터 계수를 연산하여 연산된 IIR 필터 계수와 잔차 신호를 양자화한 값을 수신측에 송신하는 IIR 필터 계수 검출 수단을 구비하여 구성함을 특징으로 한다.The present invention relates to an encoding apparatus for a residual image component for encoding and transmitting a residual image component generated between an original image signal and a reconstructed image, and comprising: encoding means for performing compression encoding on an input original image signal and transmitting the same to a receiving side; Decoding means for decoding the image encoded by the encoder 11, tram signal detection means for detecting a residual signal generated between the original image signal and the decoded image signal, and using the AR modeling technique to perform the residual signal. And an IIR filter coefficient detection means for calculating an IIR filter coefficient that outputs the image encoded by the encoding means as an input and quantizes the calculated IIR filter coefficient and the residual signal to a receiver. It features.

Description

전자 영상 성분의 부호화 장치Electronic video component encoding device

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

제1도는 본 발명의 실시예를 나타내는 상세 구성도.1 is a detailed block diagram showing an embodiment of the present invention.

제2도는 상기 제1도에 따른 잔차 영상의 거대 블럭 분할도.FIG. 2 is a block diagram of a large block of the residual image according to FIG.

Claims (6)

입력되는 원 영상 신호를 압축 부호화를 수행하여 수신측에 전송하는 부호화수단, 상기 부호화부(11)에 의해 부호화된 영상을 복호화하는 복호화 수단, 상기 원 영상 신호와 복호화된 영상 신호 사이에서 발생하는 잔차 신호를 검출하는 전차 신호 검출 수단, AR 모델링 기법을 이용하여 상기 잔차 신호를 입력으로 하고 상기 부호화수단에 의해 부호화된 영상을 출력으로 하는 IIR 필터 계수를 연산하여 연산된 IIR 필터 계수와 잔차 신호를 양자화한 값을 수신측에 송신하는 IIR 필터 계수 검출 수단을 구비하여 구성한 잔차 영상 성분의 부호화 장치.Encoding means for performing compression encoding on the input original video signal and transmitting it to a receiving side, decoding means for decoding the video encoded by the encoding unit 11, and a residual generated between the original video signal and the decoded video signal A vehicle signal detecting means for detecting a signal and an AR modeling technique are used to input the residual signal and to calculate an IIR filter coefficient for outputting an image encoded by the encoding means. An apparatus for encoding residual image components comprising an IIR filter coefficient detecting means for transmitting a value to a receiving side. 제1항에 있어서, 잔차 영상 부호화 수단은 수평측 IIR 필터 계수를 연산하여 연산된 수평측 IIR 필터 계수를 수신측에 송신하는 수평측 IIR 필터 계수 검출 수단, 수직측 IIR 필터 계수를 연산하여 연산된 수직측 IIR 필터 계수를 수신측에 송신하는 수직측 IIR 필터 계수 검출 수단으로 구성함을 특징으로 하는 잔차 영상 성분의 부호화 장치.The method according to claim 1, wherein the residual image encoding means calculates horizontal IIR filter coefficients calculated by calculating horizontal IIR filter coefficients, and calculates horizontal IIR filter coefficient detection means for transmitting the vertical IIR filter coefficients. And a vertical side IIR filter coefficient detecting means for transmitting the vertical side IIR filter coefficients to the receiving side. 제2항에 있어서, 상기 수평측 IIR 필터 계수 검출 수단은 잔차 신호로 이루어진 영상을 기 설정한 M(양의 정수)개의 거대 블럭군으로 분할한 후 각 거대 블럭에서 자기 상관을 구하여 기 설정한 N(N: 양의 정수)차자기 상관 매트릭스(R)를 생성하는 매트릭스 생성 수단, 상기 매트릭스 생성 수단에 의해 분하로딘 각 거대 블럭에서 영상 크기순으로 N개의 픽셀을 선택한 후 이를 양자화(X)하여 수신측에 전송하는 양자화 수단, 상기 매트릭스 생성수단에 의해 분할된 각 거대 블럭의 우측 하단 구간의 픽셀중 기대값을 갖는 L(양의 정수)개의 픽셀을 선택하는 기대값 선택 수단, 상기 자기 상관 매트릭스(R)와 양자화된 영상 신호(X) 및 기대값(dl∼dL)을 이용하여 AR 모델링된 L개의 수평측 IIR 필터 계수()를 연산하는 수평측 IIR 필터 계수 연산 수단, 상기 수평측 IIR 필터 계수 연산 수단에서 연산된 각 수평측 필터 계수중() 복원 영상과 잔차 영상의 MSE가 최소가 되는 필터 계수를 선택하여 수신측에 송신하는 필터 계수 선택 수단으로 구성함을 특징으로 하는 잔차 영상 성분의 부호화 장치.The NIR filter coefficient detecting means according to claim 2, wherein the horizontal IIR filter coefficient detecting means divides the image of the residual signal into a predetermined M (positive integer) macroblock group and obtains autocorrelation in each macroblock. (N: positive integer) A matrix generating means for generating an auto-correlation matrix (R), and the matrix generating means selects N pixels in order of image size from each macroblock divided by quantization (X) and then receives them. Quantization means for transmitting to the side, expectation value selecting means for selecting L (positive integer) pixels having an expected value among the pixels in the lower right section of each huge block divided by the matrix generating means, and the autocorrelation matrix ( L horizontal-side IIR filter coefficients (AR) modeled using R) and the quantized image signal X and the expected values d l to d L Of horizontal horizontal IIR filter coefficient calculating means for computing the horizontal side IIR filter coefficient calculating means, And a filter coefficient selection means for selecting a filter coefficient of which the MSE of the reconstructed image and the residual image is minimum and transmitting the same to the receiver. 제3항에 있어서, 상기 수평측 IIR 필터 계수 연산 수단은 제10) 식The method of claim 3, wherein the horizontal side IIR filter coefficient calculating means 상기 제10) 식에 의해 수평측 IIR 필터 계수를 연산함을 특징으로 하는 잔차 영상 성분의 부호화 장치.And a horizontal side IIR filter coefficient is calculated by the above equation (10). 제2항 또는 제3항에 있어서, 상기 수직측 IIR 필터 계수 검출 수단은 잔차 신호로 이루어진 영상을 기 설정한 M(양의 정수)개의 거대 블럭군으로 분할한 후 각 거대 블럭에서 자기 상관을 구하여 기 설정한 N(N: 양의 정수)차 자기 상관 매트릭스(R)를 생성하는 매트릭스 생성수단, 상기 매트릭스 생성수단에 의해 분할된 각 거대 블럭에서 영상 크기순으로 N개의 픽셀을 선택한 후 이를 양자화(X)하여 수신측에 전송하는 양자화 수단, 상기 매트릭스 생성 수단에 의해 분할된 각 거대 블럭의 우측 하단 구간의 픽셀중 기대값을 갖는 L(양의 정수)개의 픽셀을 선택하는 기대값 선택 수단, 상기 자기 상관 매트릭스(R)와 양자화된 영상 신호(X) 및 기대값(dl∼dL)을 이용하여 AR 모델링된 L개의 수직측 IIR 필터 계수()를 연산하는 수직측 IIR 필터 계수 연산 수단, 상기 수직측 IIR 필터 계수 연산 수단에서 연산된 각 수직측 필터 계수중() 복원 영상과 잔차 영상의 MSE가 최소가 되는 필터 계수를 선택하여 수신측에 송신하는 필터 계수 선택 수단으로 구성함을 특징으로 하는 잔차 영상 성분의 부호화 장치.The method according to claim 2 or 3, wherein the vertical IIR filter coefficient detecting means divides the image of the residual signal into predetermined M (positive integer) macroblock groups and obtains autocorrelation in each macroblock. Matrix generating means for generating a predetermined N (N: positive integer) order autocorrelation matrix (R), and selecting N pixels in order of image size from each large block divided by the matrix generating means, and then quantizing them X) a quantization means for transmitting to the receiving side, an expectation value selecting means for selecting L (positive integer) pixels having an expected value among the pixels in the lower right section of each huge block divided by the matrix generating means, L vertical-side IIR filter coefficients AR modeled using the autocorrelation matrix R, the quantized image signal X, and the expected values d l to d L Of vertical vertical IIR filter coefficient calculating means for calculating the vertical side IIR filter coefficient calculating means, And a filter coefficient selection means for selecting a filter coefficient of which the MSE of the reconstructed image and the residual image is minimum and transmitting the same to the receiver. 제5항에 있어서, 상기 수직측 IIR 필터 계수 연산 수단은 제11)식The method of claim 5, wherein the vertical-side IIR filter coefficient calculating means 상기 제11) 식에 의해 수직측 IIR 필터 계수를 연산함을 특징으로 하는 잔차 영상 성분의 부호화 장치.And the vertical IIR filter coefficients are calculated according to the eleventh equation. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940024870A 1994-09-30 1994-09-30 Residual image encoding apparatus KR0159562B1 (en)

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