DK2664070T3 - Entropikodnings- og afkodningssystem - Google Patents
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Claims (6)
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, hvori=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 si 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 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, kendetegnet ved, at N = 3, og hvor den første delmængde er {2, 3} med VLC-koderen (102) konfigureret til at anvende en Golomb-Rice-kode til symbolklogt at kode kildesymbolerne S2 og og en Exp-Golomb-kode til symbolklogt at kode kildesymbolerne S3, hvor værdierne z af undergruppen af syntakselementerne er absolutte værdier, og hvor VLC-koderen (102) er konfigureret til at tilpasse en Golomb-Rice-parameter af Golomb-Rice-koden ifølge tidligere kodede symboler.
2. Entropiafkodningsapparat, omfattende en VLC-afkoder (200), der er konfigureret til kodeordsklogt at rekonstruere kildesymboler af en første undersekvens (204) af kildesymboler ud fra kodeord af en første bitstrøm (206); en aritmetisk afkoder (202), der er konfigureret til at rekonstruere en anden undersekvens (208) af kildesymboler; en sammensætter (224), der er konfigureret til at sammensætte en sekvens (226) af syntakselementer med et værdiområde, der er underinddelt i en sekvens af N afsnit (140-1-3), ud fra den første undersekvens (204) af kildesymboler og den anden undersekvens (208) af kildesymboler ved enkeltvis at sammensætte hvert syntakselement fra et respektivt antal kildesymboler ved for mindst en undergruppe af syntakselementerne at bestemme det respektive antal n kildesymboler si, hvor i=1 ...n, i afhængighed af, i hvilken af sekvensen af N afsnit (140-1-3), som et værdiområde af de respektive syntakselementer er underinddelt i, en værdi z af de respektive syntakselementer falder, ved at opsummere værdierne af det respektive antal kildesymboler si fra 1 til n, så længe værdien af Si svarer til et område af det ite afsnit for at opnå værdien af syntakselementet z, hvor sammensætteren (224) er konfigureret til at indhente alle kildesymboler Sx, hvor x er et element af en første delmængde af {1...N}, fra den første undersekvens (204), og alle kildesymboler sy, hvor y er et element af en anden delmængde af {1...N}, der er usammenhængende med den første delmængde, fra den anden undersekvens (208), 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 g {1 ..N}, hvor p>q, kendetegnet ved, at N = 3, og hvor den første delmængde er {2, 3} med VLC-afkoderen (200) konfigureret til at anvende en Golomb-Rice-kode til kodeordsklogt at rekonstruere kildesymbolerne S2 og og en Exp-Golomb-kode til kodeordsklogt at rekonstruere kildesymbolerne S3, hvor værdierne z af undergruppen af syntakselementerne er absolutte værdier, og hvor VLC-afkoderen (102) er konfigureret til at tilpasse en Golomb-Rice-parameter af Golomb-Rice-koden ifølge tidligere rekonstruerede kildesymboler.
3. Entropiafkodningsapparat ifølge krav 2, der endvidere omfatter en rekombinator (220), der er konfigureret til at rekombinere den første undersekvens (204) af kildesymboler og den anden undersekvens af kildesymboler for at opnå sekvensen (218) af kildesymboler.
4. Entropikodningsfremgangsmåde, omfattende 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 (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 Si 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 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, kendetegnet ved, at N = 3, og hvor den første delmængde er {2, 3}, hvor VLC-kodningen (102) anvender en Golomb-Rice-kode til symbolklogt at kode kildesymbolerne S2 og og en Exp-Golomb-kode til symbolklogt at kode kildesymbolerne S3, hvor værdierne z af undergruppen af syntakselementerne er absolutte værdier, og hvor VLC-koderen (102) er konfigureret til at tilpasse en Golomb-Rice-parameter af Golomb-Rice-koden ifølge tidligere kodede symboler.
5. Entropiafkodningsfremgangsmåde, omfattende ved VLC-afkodning kodeordsklogt at rekonstruere kildesymboler af en første undersekvens (204) af kildesymboler ud fra kodeord af en første bitstrøm (206); ved aritmetisk afkodning at rekonstruere en anden undersekvens (208) af kildesymboler; at sammensætte en sekvens (226) af syntakselementer ud fra den første undersekvens (204) af kildesymboler og den anden undersekvens (208) af kildesymboler ved enkeltvis at sammensætte hvert syntakselement fra et respektivt antal n kildesymboler ved for mindst en undergruppe af syntakselementerne at bestemme det respektive antal n kildesymboler Si, hvor i=1...n, i afhængighed af, i hvilken af sekvensen af N afsnit (140i-3), som et værdiområde af de respektive syntakselementer er underinddelt i, en værdi z af de respektive syntakselementer falder, ved at opsummere værdierne af det respektive antal kildesymboler si fra 1 til n, så længe værdien af Si svarer til et område af det ite afsnit for at opnå værdien af syntakselementet z, hvor sammensætningen omfatter at indhente alle kildesymboler sx, hvor x er et element af en første delmængde af {1...N}, fra den første undersekvens (204), og alle kildesymboler sy, hvor y er et element af en anden delmængde af {1 ...N}, der er usammenhængende med den første delmængde, fra den anden undersekvens (208), 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 g {1 ..N}, hvor p>q, kendetegnet ved, at N = 3, og hvor den første delmængde er {2, 3}, hvor VLC-afkodningen (200) anvender en Golomb-Rice-kode til kodeordsklogt at rekonstruere kildesymbolerne S2 og en Exp-Golomb-kode til kodeordsklogt at rekonstruere kildesymbolerne S3, hvor værdierne z af undergruppen af syntakselementerne er absolutte værdier, og hvor VLC-afkoderen (102) er konfigureret til at tilpasse en Golomb-Rice-parameter af Golomb-Rice-koden ifølge tidligere rekonstruerede kildesymboler.
6. Computerprogram med en programkode til at udføre en fremgangmåde ifølge krav 4 eller 5, når det afvikles på en computer.
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| US201161432884P | 2011-01-14 | 2011-01-14 | |
| PCT/EP2012/050431 WO2012095488A2 (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 |
| DK14160496.7T DK2768144T3 (da) | 2011-01-14 | 2012-01-12 | Entropikodnings- og afkodningssystem |
| DK14160512.1T DK2760138T3 (da) | 2011-01-14 | 2012-01-12 | Entropikodningssystem |
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| DK14160496.7T DK2768144T3 (da) | 2011-01-14 | 2012-01-12 | Entropikodnings- og afkodningssystem |
| DK14160512.1T DK2760138T3 (da) | 2011-01-14 | 2012-01-12 | Entropikodningssystem |
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| EP (7) | EP2760138B1 (da) |
| JP (8) | JP5809292B2 (da) |
| KR (13) | KR101955143B1 (da) |
| CN (7) | CN107342770B (da) |
| DK (5) | DK2768145T3 (da) |
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| KR101753273B1 (ko) * | 2010-03-10 | 2017-07-03 | 톰슨 라이센싱 | 변환 선택을 갖는 비디오 코딩 및 디코딩을 위한 제약 변환 방법 및 장치 |
| CN107342770B (zh) | 2011-01-14 | 2020-11-03 | Ge视频压缩有限责任公司 | 熵编码设备和方法、熵解码设备和方法、及存储介质 |
| CN103797803A (zh) * | 2011-06-28 | 2014-05-14 | 三星电子株式会社 | 用于熵编码/解码的方法和设备 |
| US20130083856A1 (en) * | 2011-06-29 | 2013-04-04 | Qualcomm Incorporated | Contexts for coefficient level coding in video compression |
| AU2012309008A1 (en) * | 2011-09-16 | 2013-11-07 | Mediatek Singapore Pte. Ltd. | Method and apparatus for prediction mode and partition mode syntax coding for coding units in HEVC |
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