KR930015824A - 변환방식의 적응적 선택에 의한 변환부호화 및 복호화방법 - Google Patents

변환방식의 적응적 선택에 의한 변환부호화 및 복호화방법 Download PDF

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KR930015824A
KR930015824A KR1019910022380A KR910022380A KR930015824A KR 930015824 A KR930015824 A KR 930015824A KR 1019910022380 A KR1019910022380 A KR 1019910022380A KR 910022380 A KR910022380 A KR 910022380A KR 930015824 A KR930015824 A KR 930015824A
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transform
converter
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KR960006761B1 (ko
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정제창
김성봉
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강진구
삼성전자 주식회사
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Priority to JP4313764A priority patent/JPH0654313A/ja
Priority to DE4241131A priority patent/DE4241131B4/de
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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
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    • H—ELECTRICITY
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    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • 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
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • 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
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    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/149—Data rate or code amount at the encoder output by estimating the code amount by means of a model, e.g. mathematical model or statistical model
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/15—Data rate or code amount at the encoder output by monitoring actual compressed data size at the memory before deciding storage at the transmission buffer
    • 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
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/18—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a set of transform coefficients
    • H—ELECTRICITY
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/48—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using compressed domain processing techniques other than decoding, e.g. modification of transform coefficients, variable length coding [VLC] data or run-length data
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    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability

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  • Compression Or Coding Systems Of Tv Signals (AREA)
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Abstract

본 발명은 변환부호화에 있어서, 다수 종류의 변환기를 사용하여 그 중 에너지패킹효율이 가장 높은 것을 적응적으로 선택하여 그에 의해 변환된 신호를 출력하게 함으로써 부호화효율을 최적화한다. 본 발명은 또한 상기의 변환부호화방법을 실시하기 위한 장치를 제공한다.

Description

변환방식의 적응적 선택에 의한 변환부호화 및 복호화방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따른 변환부호화방법의 블록도, 제2도는 변환영역에서의 에너지 검출영역을 설명도, 제3도는 본 발명에 따른 변환복호화방법의 블록도.

Claims (5)

  1. 변환부호화방법에 있어서, 변환될 입력신호를 적어도 두개의 각기 다른 종류의 변환기에 각각 입력하는 단계와, 상기 각 변환기로부터 출력신호를 인출하여 그 출력신호들의 저주파영역의 에너지를 검출하고 상호 비교하는 단계와, 상기 비교결과 에너지가 가장 높은 변환기의 출력신호를 선택하여 출력하는 단계를 포함하는 것을 특징으로 하는 변환방식의 적응적 선택에 의한 변환부호화방법.
  2. 제1항에 있어서, 상기 에너지검출 및 비교단계에서 시간지연을 보상하는 단계를 더 포함하는 것을 특징으로 하는 변환방식의 적응적 선택에 의한 변환부호화방법.
  3. 변환부호화장치에 있어서, 변환될 신호의 입력부와, 상기 입력부로부터의 입력신호를 개별적으로 받아들이는 적어도 두개의 각기 다른 종류의 변환기로 이루어진 변환부와, 상기 각 변환기로부터의 후단에 연결되어 상기 에너지검출부로부터의 제어신호에 따라 에너지가 가장 높은 변환기의 출력신호를 출력하는 멀티플렉서를 포함하는 것을 특징으로 하는 변환방식의 적응적 선택에 의한 변환부호화장치.
  4. 제3항에 있어서, 상기 변환부와 상기 멀티프렉스사이에 에너지검출부에서의 시간지연을 보상하기 위한 지연기를 더 포함하는 것을 특징으로 하는 변환방식의 적응적 선택에 의한 변환부호화장치.
  5. 변환복호화방법에 있어서, 변환부호화된 신호의 변환기에 관한 정보를 변환부호화신호에 수반하는 전송하는 단계와, 변환부호화된 입력신호를 적어도 두개의 각기 다른 종류의 역변환기에 각각 입력하는 단계와, 상기 각 역변환기로부터의 출력신호중 상기 변환기정보에 해당하는 역변환기의 출력신호를 선택하여 출력하는 단계를 포함하는 것을 특징으로 하는 변환복호화방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910022380A 1991-12-07 1991-12-07 변환방식의 적응적 선택에 의한 변환부호화 및 복호화방법 KR960006761B1 (ko)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019910022380A KR960006761B1 (ko) 1991-12-07 1991-12-07 변환방식의 적응적 선택에 의한 변환부호화 및 복호화방법
JP4313764A JPH0654313A (ja) 1991-12-07 1992-11-24 適応的選択による符号化及び復号化装置
DE4241131A DE4241131B4 (de) 1991-12-07 1992-12-07 Einrichtung zum Kodieren und Dekodieren von Übertragungssignalen mittels Transformationen
US08/322,037 US5495244A (en) 1991-12-07 1994-10-12 Device for encoding and decoding transmission signals through adaptive selection of transforming methods

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KR1019910022380A KR960006761B1 (ko) 1991-12-07 1991-12-07 변환방식의 적응적 선택에 의한 변환부호화 및 복호화방법

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KR930015824A true KR930015824A (ko) 1993-07-24
KR960006761B1 KR960006761B1 (ko) 1996-05-23

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JP (1) JPH0654313A (ko)
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DE (1) DE4241131B4 (ko)

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KR960006761B1 (ko) 1996-05-23
JPH0654313A (ja) 1994-02-25
DE4241131B4 (de) 2011-01-20
DE4241131A1 (en) 1993-06-09
US5495244A (en) 1996-02-27

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