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DK2760138T3 - Entropikodningssystem - Google Patents

Entropikodningssystem Download PDF

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Publication number
DK2760138T3
DK2760138T3 DK14160512.1T DK14160512T DK2760138T3 DK 2760138 T3 DK2760138 T3 DK 2760138T3 DK 14160512 T DK14160512 T DK 14160512T DK 2760138 T3 DK2760138 T3 DK 2760138T3
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bin
buffer
sequence
codeword
probability
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DK14160512.1T
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English (en)
Inventor
Detlev Marpe
Tung Nguyen
Heiko Schwarz
Thomas Wiegand
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Ge Video Compression Llc
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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
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
    • 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
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/4006—Conversion to or from arithmetic code
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/4031—Fixed length to variable length coding
    • H03M7/4037—Prefix coding
    • 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
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • 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
    • H03M7/55—Compression Theory, e.g. compression of random number, repeated compression
    • 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
    • H04N19/119—Adaptive subdivision aspects, e.g. subdivision of a picture into rectangular or non-rectangular coding blocks
    • 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
    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
    • 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
    • H04N19/18—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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Claims (5)

  1. PAT E NT K RAV
    1. Entropikodningsapparat, omfattende en nedbryder (136), der er konfigureret til at omdanne en sekvens (138) af syntakselementer med et værdiområde, der er underinddelt i en sekvens af N afsnit (140i-3), til en sekvens (106) af kildesymboler (106) ved enkeltvis at nedbryde mindst en undergruppe af syntakselementerne til et respektivt antal n kildesymboler Si, hvor i=1 ...n, hvor det respektive antal n kildesymboler afhænger af, i hvilken af sekvensen af N afsnit (I4O1-3) en værdi z af de respektive syntakselementer falder, således at en sum af værdier af det respektive antal kildesymboler Si giver z, og hvis n>1 for alle i=1...n-1 svarer værdien af s, til et område af det ite afsnit; en underinddeler (100), der er konfigureret til at underinddele sekvensen (106) af kildesymboler i en første undersekvens (108) af kildesymboler og en anden undersekvens (110) af kildesymboler, således at alle kildesymboler sx, hvor x er et element af en første delmængde af {1...N}, er indeholdt i den første undersekvens (108), og alle kildesymboler sy, hvor y er et element af en anden delmængde af {1...N}, der er usammenhængende med den første delmængde, er indeholdt i den anden undersekvens (110); en VLC-koder (102), der er konfigureret til symbolklogt at kode kildesymbolerne af den første undersekvens (108); og en aritmetisk koder (104), der er konfigureret til at kode den anden undersekvens (110) af kildesymboler, hvor antallet af afsnit N og grænsen af afsnittene afhænger af det aktuelle syntakselement.
  2. 2. Entropikodningsapparat ifølge krav 1, hvor værdierne z af undergruppen af syntakselementerne er absolutte værdier.
  3. 3. Entropikodningsapparat ifølge krav 1 eller 2, hvor den anden delmængde er {1} med sekvensen af N afsnit er placeret således, at et pte afsnit dækker højere værdier af værdiområdet end et qte afsnit for alle p, q e {1 ..N}, hvor p>q.
  4. 4. Entropikodningsfremgangsmåde, omfattende at omdanne en sekvens (138) af syntakselementer med et værdiområde, der er underinddelt i en sekvens af N afsnit (1401-3), til en sekvens (106) af kildesymboler (106) ved enkeltvis at nedbryde mindst en undergruppe af syntakselementerne til et respektivt antal n kildesymboler s\, hvor i=1...n, hvor det respektive antal n kildesymboler afhænger af, i hvilken af sekvensen af N afsnit (140i-3) en værdi z af de respektive syntakselementer falder, således at en sum af værdier af det respektive antal kildesymboler Si giver z, og hvis n>1 for alle i=1...n-1 svarer værdien af s, til et område af det ite afsnit; at underinddele sekvensen (106) af kildesymboler i en første undersekvens (108) af kildesymboler og en anden undersekvens (110) af kildesymboler, således at alle kildesymboler sx, hvor x er et element af en første delmængde af {1 ...N}, er indeholdt i den første undersekvens (108), og alle kildesymboler sy, hvor y er et element af en anden delmængde af {1 ...N}, der er usammenhængende med den første delmængde, er indeholdt i den anden undersekvens (110); ved VLC-kodning symbolklogt at kode kildesymbolerne af den første undersekvens (108); og ved aritmetisk kodning at kode den anden undersekvens (110) af kildesymboler, hvor antallet af afsnit N og grænsen af afsnittene afhænger af det aktuelle syntakselement.
  5. 5. Computerprogram med en programkode til at udføre en fremgangsmåde ifølge krav 4, når det afvikles på en computer.
DK14160512.1T 2011-01-14 2012-01-12 Entropikodningssystem DK2760138T3 (da)

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US201161432884P 2011-01-14 2011-01-14
EP12700329.1A EP2664070B1 (en) 2011-01-14 2012-01-12 Entropy encoding and decoding scheme

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DK18160276T DK3349360T3 (da) 2011-01-14 2012-01-12 Entropikodnings- og -afkodningssystem
DK14160512.1T DK2760138T3 (da) 2011-01-14 2012-01-12 Entropikodningssystem
DK12700329.1T DK2664070T3 (da) 2011-01-14 2012-01-12 Entropikodnings- og afkodningssystem
DK14160496.7T DK2768144T3 (da) 2011-01-14 2012-01-12 Entropikodnings- og afkodningssystem
DK14160511.3T DK2768145T3 (da) 2011-01-14 2012-01-12 Entropikodnings- og afkodningssystem

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DK14160511.3T DK2768145T3 (da) 2011-01-14 2012-01-12 Entropikodnings- og afkodningssystem

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US (17) US9083374B2 (da)
EP (7) EP3349360B1 (da)
JP (8) JP5809292B2 (da)
KR (13) KR102393305B1 (da)
CN (7) CN103404035B (da)
DK (5) DK3349360T3 (da)
ES (5) ES2566916T3 (da)
HU (5) HUE046377T2 (da)
NO (1) NO2956175T3 (da)
PL (5) PL2768145T3 (da)
PT (3) PT2760138T (da)
TR (1) TR201807771T4 (da)
TW (9) TWI505650B (da)
WO (1) WO2012095488A2 (da)

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