KR970019661A - Adaptive block interpolation encoder for each band - Google Patents

Adaptive block interpolation encoder for each band Download PDF

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Publication number
KR970019661A
KR970019661A KR1019950032858A KR19950032858A KR970019661A KR 970019661 A KR970019661 A KR 970019661A KR 1019950032858 A KR1019950032858 A KR 1019950032858A KR 19950032858 A KR19950032858 A KR 19950032858A KR 970019661 A KR970019661 A KR 970019661A
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South Korea
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pixel blocks
block
pixel
dct coefficients
interpolation
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KR1019950032858A
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Korean (ko)
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KR0178208B1 (en
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윤성욱
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배순훈
대우전자 주식회사
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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
    • H04N19/102—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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • 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
    • H04N19/60—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 대역 분할된 영상 데이터를 적응적으로 블럭 보간하는 대역별 적응 블럭 보간 부호화 장치에 관한 것으로, 현재 프레임과 움직임 보상된 이전 프레임간의 차분 데이터를 8*8화소 블럭 단위로 추출하여 8*8화소 블럭을 이산 여현 변환하는 DCT부(130), 상기 8*8화소 블럭내의 12화소 블럭을 보간하는 제1보간부(140), 상기 8*8화소 블럭 단위로 이산 여형 변환된 DCT계수중 좌·하측 4*4화소 블럭의 4모서리 화소 블럭의 DCT계수를 이용하여 4*4화소 블럭내의 12화소 블럭을 보간하는 제2보간부(150), 상기 8*8화소 블럭 단위로 이산 여형 변환된 DCT계수중 우·상측 4*4화소 블럭의 4모서리 화소 블럭의 DCT계수를 이용하여 4*4화소 블럭내의 12화소 블럭을 보간하는 제3보간부(160), 상기 8*8화소 블럭 단위로 이산 여현 변환된 DCT계수중 우·하측 4*4화소 블럭의 4모서리 화소 블럭의 DCT계수를 이용하여 4*4화소 블럭내의 12화소블럭을 보간하는 제4보간부(170), 상기 제1 및 제4보간부(140,150,160,170,)에 일대응 대응되게 연결되어 각 대역별로 블럭 보간된 DCT계수를 양자화하는 제1 및 제4양자화부(180,190,200,210), 상기 제1 및 제4양자화부(180,190,200,210)에 의해 양자화된 데이터를 다중화하여 전송 라인에 전송하는 다중화부(220)를 구비하여 구성함을 특징으로 한다.The present invention relates to a band-specific adaptive block interpolation encoding apparatus for adaptive block interpolation of band-divided image data, and extracts the difference data between a current frame and a motion-compensated previous frame in 8 * 8 pixel block units. DCT unit 130 for discrete cosine transforming pixel blocks, first interpolation unit 140 for interpolating 12 pixel blocks in the 8 * 8 pixel block, and left of the DCT coefficients discretely transformed in 8 * 8 pixel block units. A second interpolation unit 150 for interpolating 12 pixel blocks in a 4 * 4 pixel block using DCT coefficients of 4 edge pixel blocks of a lower 4 * 4 pixel block, and discretely transformed by 8 * 8 pixel block units A third interpolation unit 160 interpolating 12 pixel blocks in a 4 * 4 pixel block using DCT coefficients of 4 edge pixel blocks of the right and upper 4 * 4 pixel blocks among the DCT coefficients in units of 8 * 8 pixel blocks. Four edges of right and bottom 4 * 4 pixel blocks in discrete cosine transformed DCT coefficients It is connected to the fourth interpolation unit 170 and the first and fourth interpolation units 140, 150, 160, 170, which interpolate 12 pixel blocks in a 4 * 4 pixel block by using the DCT coefficient of the small block. First and fourth quantizers 180, 190, 200 and 210 for quantizing block interpolated DCT coefficients, and a multiplexer 220 for multiplexing the quantized data by the first and fourth quantizers 180, 190, 200 and 210 and transmitting them to a transmission line. It is characterized by the configuration.

Description

대역별 적응 블록 보간 부호화 장치Adaptive block interpolation encoder for each band

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

제1도는 본 발명의 바람직한 실시예를 나타내는 상세 구성도1 is a detailed block diagram showing a preferred embodiment of the present invention

제2도는 본 발명에 따른 대역별 적응 블록 보간을 설명하기 위한 도면2 is a diagram for explaining band-specific adaptive block interpolation according to the present invention.

Claims (1)

대역 분할된 영상 데이터를 적응적으로 블럭 보간하는 대역별 적응 블럭 보간 부호화 장치에 있어서; 현재 프레임과 움직임 보상된 이전 프레임간의 차분 데이터를 8*8화소 블럭 단위로 추출하여 8*8화소 블럭을 이산 여현 변환하는 DCT부(130), 상기 8*8화소 블럭 단위로 이산 여현 변환된 DCT 계수중 좌· 상측 4*4 화소 블럭의 4 모서리화소 블럭의 DCT 계수를 이용하여 4*4 화소 블럭내의 12화소 블럭을 보간하는 제1보간부(140), 상기 8*8화소 블럭 단위로 이산 여형 변환된 DCT계수중 좌·하측 4*4화소 블럭의 4모서리 화소 블럭의 DCT계수를 이용하여 4*4화소 블럭내의 12화소 블럭을 보간하는 제2보간부(150), 상기 8*8화소 블럭 단위로 이산 여형 변환된 DCT계수중 우·상측 4*4화소 블럭의 4모서리 화소 블럭의 DCT계수를 이용하여 4*4화소 블럭내의 12화소 블럭을 보간하는 제3보간부(160), 상기 8*8화소 블럭 단위로 이산 여현 변환된 DCT계수중 우·하측 4*4화소 블럭의 4모서리 화소 블럭의 DCT계수를 이용하여 4*4화소 블럭내의 12화소블럭을 보간하는 제4보간부(170), 상기 제1 및 제4보간부(140,150,160,170,)에 일대응 대응되게 연결되어 각 대역별로 블록 보간된 DCT계수를 양자화하는 제1 및 제4양자화부(180,190,200,210), 상기 제1 및 제4양자화부(180,190,200,210)에 의해 양자화된 데이터를 다중화하여 전송 라인에 전송하는 다중화부(220)를 구비한 대역별 적응 블럭 보간 부호화 장치A band-specific adaptive block interpolation encoding apparatus for adaptively block interpolating band-divided image data; The DCT unit 130 extracts the differential data between the current frame and the motion-compensated previous frame in 8 * 8 pixel block units and performs discrete cosine transform on 8 * 8 pixel blocks. The DCT is discrete cosine transformed in 8 * 8 pixel blocks. A first interpolation unit 140 interpolating 12 pixel blocks in a 4 * 4 pixel block using DCT coefficients of four corner pixel blocks of the left and top 4 * 4 pixel blocks among the coefficients, and discrete in 8 * 8 pixel block units. The second interpolation unit 150 interpolating 12 pixel blocks in the 4 * 4 pixel block using the DCT coefficients of the four corner pixel blocks of the left and bottom 4 * 4 pixel blocks among the transformed DCT coefficients, and the 8 * 8 pixels. A third interpolator 160 which interpolates 12 pixel blocks in a 4 * 4 pixel block by using DCT coefficients of 4 edge pixel blocks of the right and upper 4 * 4 pixel blocks among DCT coefficients which are discretely transformed in block units. Four edges of the right and bottom 4 * 4 pixel blocks of the DCT coefficients discretely cosine transformed by 8 * 8 pixel blocks It is connected to the fourth interpolation unit 170 and the first and fourth interpolation units 140, 150, 160, 170, which interpolate 12 pixel blocks in a 4 * 4 pixel block by using the DCT coefficient of the small block. A first and fourth quantizers 180, 190, 200 and 210 for quantizing block interpolated DCT coefficients, and a multiplexer 220 for multiplexing the quantized data by the first and fourth quantizers 180, 190, 200 and 210 and transmitting them to a transmission line. Adaptive Block Interpolation Coding Device ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950032858A 1995-09-29 1995-09-29 Encoding apparatus for interpolating block KR0178208B1 (en)

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KR1019950032858A KR0178208B1 (en) 1995-09-29 1995-09-29 Encoding apparatus for interpolating block

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Application Number Priority Date Filing Date Title
KR1019950032858A KR0178208B1 (en) 1995-09-29 1995-09-29 Encoding apparatus for interpolating block

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KR970019661A true KR970019661A (en) 1997-04-30
KR0178208B1 KR0178208B1 (en) 1999-05-01

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