NO20052764L - Metode og apparat for mellomliggende bildetidtakningsspesifikasjon med variable noyaktighet for digital videokoding med redusen behov for delingsoperasjoner - Google Patents

Metode og apparat for mellomliggende bildetidtakningsspesifikasjon med variable noyaktighet for digital videokoding med redusen behov for delingsoperasjoner

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Publication number
NO20052764L
NO20052764L NO20052764A NO20052764A NO20052764L NO 20052764 L NO20052764 L NO 20052764L NO 20052764 A NO20052764 A NO 20052764A NO 20052764 A NO20052764 A NO 20052764A NO 20052764 L NO20052764 L NO 20052764L
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Norway
Prior art keywords
video image
digital video
scaled
image capture
video coding
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NO20052764A
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English (en)
Inventor
Barin G Haskell
David W Singer
Adriana Dumitras
Atul Pari
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Apple Computer
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Publication of NO20052764L publication Critical patent/NO20052764L/no

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    • H04N19/51—Motion estimation or motion compensation
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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Metode og apparat for å utføre bevegelsesestimering i digitale videosystemer som fremvist i fig. 1 spesielt fremviser den foreliggende oppfinnelsen et system som raskt beregner estimerte bevegelsesvektorer på en svært effektiv måte (fig. 1, enhet 160). I én utførelse blir en første multiplikator bestemt ved å multiplisere en første displaytidsforskjell mellom et første videobilde og et andre videobilde med en potens av toerskalaverdi (fig. 1, enheter 150, 160). Dette trinnet skalerer opp en nummerator for et forhold (fig. 1, enhet 120). Deretter bestemmer systemet et skalert forhold ved å dividere den skalerte nummeratoren på en første displaytidsforskjell mellom det andre videobildet og det tredje videobildet. Det skalerte forholdet blir så lagret. Ved å lagre det skalerte forholdet, kan alle de estimerte bevegelsesdetektorene bli beregnet rask med god presisjon siden det skalerte forholdet lagrer signifikante bits og redusering av skalaen blir utført ved enkle skift.
NO20052764A 2002-12-06 2005-06-08 Metode og apparat for mellomliggende bildetidtakningsspesifikasjon med variable noyaktighet for digital videokoding med redusen behov for delingsoperasjoner NO20052764L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/313,773 US6728315B2 (en) 2002-07-24 2002-12-06 Method and apparatus for variable accuracy inter-picture timing specification for digital video encoding with reduced requirements for division operations
PCT/US2003/024953 WO2004054257A1 (en) 2002-12-06 2003-08-07 Method and apparatus for variable accuracy inter-picture timing specification for digital video enocoding with reduced requirements for division operations

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NO20052764L true NO20052764L (no) 2005-06-08

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NO20052764A NO20052764L (no) 2002-12-06 2005-06-08 Metode og apparat for mellomliggende bildetidtakningsspesifikasjon med variable noyaktighet for digital videokoding med redusen behov for delingsoperasjoner

Country Status (10)

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US (20) US6728315B2 (no)
EP (1) EP1579689A4 (no)
JP (3) JP2006509463A (no)
KR (1) KR100804335B1 (no)
CN (2) CN101242536B (no)
AU (2) AU2003258142B2 (no)
BR (1) BR0316175A (no)
CA (2) CA2784948A1 (no)
NO (1) NO20052764L (no)
WO (1) WO2004054257A1 (no)

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