NO20080535L - Effektiv koding og dekoding av transformasjonsblokker - Google Patents
Effektiv koding og dekoding av transformasjonsblokkerInfo
- Publication number
- NO20080535L NO20080535L NO20080535A NO20080535A NO20080535L NO 20080535 L NO20080535 L NO 20080535L NO 20080535 A NO20080535 A NO 20080535A NO 20080535 A NO20080535 A NO 20080535A NO 20080535 L NO20080535 L NO 20080535L
- Authority
- NO
- Norway
- Prior art keywords
- zero
- coefficients
- different
- runs
- coefficient
- Prior art date
Links
Classifications
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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
- H03M7/02—Conversion to or from weighted codes, i.e. the weight given to a digit depending on the position of the digit within the block or code word
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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
- 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
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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
- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
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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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
- H04N19/51—Motion estimation or motion compensation
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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
-
- 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
-
- 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
- H04N19/93—Run-length coding
Abstract
En blokktransformasjonsbasert digital mediakodek koder mer effektivt transformasjonskoeffisienter ved felleskoding av koeffisienter som er ulik null sammen med etterfølgende kjøringer av koeffisienter med verdi null. Når en koeffisient som er ulik null er den siste i sin blokk, settes en siste indikator inn for kjøreverdien i symbolet for denne koeffisient. Initiale koeffisienter som er ulik null er angitt i et spesialsymbol som felleskoder koeffisienten som er ulik null sammen med initiale og etterfølgende kjøringer av nuller. Kodeken muliggjør flere kodingskontekster ved gjenkjennelse av brudd i kjøringer av koeffisienter som er ulik null og koding av koeffisienter som er ulik null på hver side av et slikt brudd separat. Kodeken reduserer også kodetabellstørrelse ved i hvert symbol å angi om hvorvidt en koeffisient som er ulik null har absoluttverdi som er større enn 1 og om hvorvidt kjøringer av nuller har positiv verdi, og koder separat nivået av koeffisientene og lengden av kjøringene på utsiden av symbolene.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/203,008 US8599925B2 (en) | 2005-08-12 | 2005-08-12 | Efficient coding and decoding of transform blocks |
PCT/US2006/030308 WO2007021568A2 (en) | 2005-08-12 | 2006-08-03 | Efficient coding and decoding of transform blocks |
Publications (1)
Publication Number | Publication Date |
---|---|
NO20080535L true NO20080535L (no) | 2008-05-09 |
Family
ID=37742496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20080535A NO20080535L (no) | 2005-08-12 | 2008-01-29 | Effektiv koding og dekoding av transformasjonsblokker |
Country Status (18)
Country | Link |
---|---|
US (1) | US8599925B2 (no) |
EP (1) | EP1913698B1 (no) |
JP (1) | JP4906855B2 (no) |
KR (1) | KR101176691B1 (no) |
CN (1) | CN101243611B (no) |
AU (1) | AU2006280226B2 (no) |
BR (1) | BRPI0614759A2 (no) |
CA (1) | CA2618788C (no) |
EG (1) | EG25353A (no) |
IL (1) | IL189126A (no) |
MX (1) | MX2008001856A (no) |
MY (1) | MY145748A (no) |
NO (1) | NO20080535L (no) |
NZ (1) | NZ565672A (no) |
RU (1) | RU2417518C2 (no) |
TW (1) | TWI431948B (no) |
WO (1) | WO2007021568A2 (no) |
ZA (1) | ZA200801177B (no) |
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CN101243611B (zh) | 2012-12-05 |
EP1913698A2 (en) | 2008-04-23 |
MX2008001856A (es) | 2008-04-14 |
BRPI0614759A2 (pt) | 2011-04-12 |
MY145748A (en) | 2012-03-30 |
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CA2618788C (en) | 2014-07-15 |
TW200711324A (en) | 2007-03-16 |
KR20080042809A (ko) | 2008-05-15 |
TWI431948B (zh) | 2014-03-21 |
NZ565672A (en) | 2011-07-29 |
IL189126A (en) | 2015-03-31 |
KR101176691B1 (ko) | 2012-08-23 |
JP2009505494A (ja) | 2009-02-05 |
CN101243611A (zh) | 2008-08-13 |
WO2007021568A2 (en) | 2007-02-22 |
JP4906855B2 (ja) | 2012-03-28 |
EG25353A (en) | 2011-12-18 |
RU2008105046A (ru) | 2009-08-20 |
IL189126A0 (en) | 2008-08-07 |
EP1913698A4 (en) | 2011-12-21 |
RU2417518C2 (ru) | 2011-04-27 |
CA2618788A1 (en) | 2007-02-22 |
EP1913698B1 (en) | 2018-03-14 |
US20070036223A1 (en) | 2007-02-15 |
WO2007021568A3 (en) | 2008-01-03 |
AU2006280226A1 (en) | 2007-02-22 |
ZA200801177B (en) | 2010-08-25 |
US8599925B2 (en) | 2013-12-03 |
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