KR960013067A - Band Division Image Coding Method - Google Patents

Band Division Image Coding Method Download PDF

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Publication number
KR960013067A
KR960013067A KR1019940024872A KR19940024872A KR960013067A KR 960013067 A KR960013067 A KR 960013067A KR 1019940024872 A KR1019940024872 A KR 1019940024872A KR 19940024872 A KR19940024872 A KR 19940024872A KR 960013067 A KR960013067 A KR 960013067A
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South Korea
Prior art keywords
pass filtered
horizontal direction
vertical direction
low
low pass
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KR1019940024872A
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Korean (ko)
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KR0141305B1 (en
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황덕동
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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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H04N19/635—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by filter definition or implementation details
    • 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
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
    • H04N19/139—Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
    • 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 영상 신호의 대역을 7 분할하여 부호화하는 영상 대역 부호화 방법에 관한 것으로, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된 최 저역 영역(H11)은 2차원 DCT를 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로 저역 필터링되고 수직 방향으로 고역 필터링된 영역(H12)은 수평 방향으로 1차원 DCT를 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로 고역 필터링되고 수직 방향으로 저역 필터링된 영역(H13)은 수직 방향으로 1차원 DCT를 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로 고역 필터링되고 수직 방향으로 고역 필터링된 영역(H14)은 기 설정 양자화 스케일로 PCM을 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 고역 필터링된 영역은(H2)은 수평 방향으로 1차원 DPCM을 수행하는 단계, 수평 방향으로 고역 필터링되고 수직 방향으로 저역 필터링된 영역은(H3)은 수직 방향으로 1차원 DPCM을 수행하는 단계, 수평 방향으로 고역 필터링 되고 수직 방향으로 고역 필터링된 영역(H4)은 기 설정된 양자화 스케일로 PCM을 수행하는 단계로 이루어짐을 특징으로 한다.The present invention relates to an image band encoding method for encoding a band of an image signal by dividing the image signal into seven subbands. H11) performs a two-dimensional DCT, low-pass filtering in the horizontal direction and low-pass filtering in the vertical direction, low-pass filtering in the horizontal direction, and high-pass filtered region H12 in the vertical direction performs one-dimensional DCT in the horizontal direction. Step, low pass filtered in the horizontal direction, low pass filtered in the vertical direction, high pass filtered in the horizontal direction, low pass filtered in the vertical direction, and performing a one-dimensional DCT in the vertical direction, low pass filtered in the horizontal direction, and vertical Low pass filtered in the horizontal direction, then high pass filtered in the horizontal direction, and high pass filtered in the vertical direction. The region H14 performs the PCM at a preset quantization scale, the low pass filtered in the horizontal direction and the high pass filtered region in the vertical direction, and the H2 performs the one-dimensional DPCM in the horizontal direction, and the high pass in the horizontal direction. The filtered and low-pass filtered region H3 performs a one-dimensional DPCM in the vertical direction, the high-pass filtered region in the horizontal direction, and the high-pass filtered region H4 in the vertical direction performs PCM at a preset quantization scale. It is characterized by consisting of steps.

Description

대역 분할 영상 부호화 방법Band Division Image Coding Method

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

제 2 도는 상기 제 1 도에 의해 분할된 대역 분할도.2 is a band division diagram divided by the first diagram.

제 3 도는 본 발명의 실시예를 나타내는 대역 분할도.3 is a band division diagram showing an embodiment of the present invention.

Claims (2)

수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로저역 필터링되고 수직 방향으로 저역 필터링된 최 저역 영역(H11)은 2차원 DCT를 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로 저역 필터링되고 수직 방향으로 고역 필터링된 영역(H12)은 수평 방향으로 1차원 DCT를 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된후 수평 방향으로 고역 필터링되고 수직 방향으로 저역 필터링된 영역(H13)은 수직 방향으로 1차원 DCT를 수행하는 단계, 수평 방향으로 저역 필터링되고 수직 방향으로 저역 필터링된수 수평 방향으로 고역 필터링되고 수직 방향으로고역 필터링된 영역(H14)은 기 설정 양자화 스케일로 PCM을 수행하는 단계, 수평 방향으로 저역 필터링되고수직 방향으로 고역 필터링된 영역(H2)은 수평 방향으로 1차원 DPCM을 수행하는 단계, 수평 방향으로 고역 필터링되고 수직 방향으로 저역 필터링된 영역(H3)은 수직 방향으로 1차원 DPCM을 수행하는 단계, 수평 방향으로 고역 필터링 되고 수직 방향으로 고역 필터링된 영역(H4)은 기 설정된 양자화 스케일로 PCM을 수행하는단계로 이루어짐을 특징으로 하는 대역 분할 영상 부호화 방법.The low pass filtered in the horizontal direction, the low pass filtered in the vertical direction, the low pass filtered in the horizontal direction, and the low pass filtered in the vertical direction, performs the two-dimensional DCT, the low pass filtered in the horizontal direction and the low pass in the vertical direction. After filtering, the low pass filtered in the horizontal direction and the high pass filtered area in the vertical direction (H12) are performed by performing a one-dimensional DCT in the horizontal direction, low pass filtered in the horizontal direction, low pass filtered in the vertical direction, and then high pass filtered in the horizontal direction. The low-pass filtered region H13 in the vertical direction is performed by performing a one-dimensional DCT in the vertical direction, the low-pass filtered in the horizontal direction, and the low-pass filtered in the vertical direction. The high-pass filtered region in the horizontal direction and the high-pass filtered region in the vertical direction. Performing the PCM with a preset quantization scale, low pass filtered in the horizontal direction and Performing the one-dimensional DPCM in the horizontal direction, performing the one-dimensional DPCM in the horizontal direction, performing the one-dimensional DPCM in the horizontal direction, and performing the one-dimensional DPCM in the vertical direction, and performing the one-dimensional DPCM in the vertical direction. And performing high frequency filtering in the horizontal direction and high filtering in the vertical direction (H4), performing the PCM at a preset quantization scale. 제 1 항에 있어서, 상기 2차원 DCT를 수행한 영역(H11)에서 역측한 움직임 벡터로 상기 각 분할 대역(H11,H12,H13,H14,H2,H3,H4)의 움직임 보상을 수행하는 단계를 더 포함하여 이루어짐을 특징으로 하는 대역 분할 영상 부호화 방법.The method of claim 1, further comprising performing motion compensation of each of the divided bands H11, H12, H13, H14, H2, H3, and H4 using an inverse motion vector in the region H11 on which the two-dimensional DCT is performed. Band split image encoding method characterized in that it further comprises. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940024872A 1994-09-30 1994-09-30 Subband coding method KR0141305B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100463481B1 (en) * 2001-11-29 2004-12-29 제일모직주식회사 Method of Manufacturing Artificial Marble Having Inlay Pattern

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6815103B2 (en) 2016-06-10 2021-01-20 川崎重工業株式会社 Flow control valve device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100463481B1 (en) * 2001-11-29 2004-12-29 제일모직주식회사 Method of Manufacturing Artificial Marble Having Inlay Pattern

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