Efficient context handling in arithmetic coding

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United States of America Patent

PATENT NO 10390018
APP PUB NO 20180007360A1
SERIAL NO

15689291

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Abstract

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Coding using efficient context handling in arithmetic coding is disclosed. A method for decoding a current block in a scan order includes identifying a current entropy coded transform coefficient from the current block, and entropy decoding the current entropy coded transform coefficient. Entropy decoding the current entropy coded transform coefficient may include determining, based on the scan order, a first scan order distance between a scan order location corresponding to the current entropy coded transform coefficient and a scan order location corresponding to a first context coefficient, identifying a first context coefficient value from a first location in a context coefficient register, the first location corresponding to the first scan order distance, and entropy decoding the current entropy coded transform coefficient based on the first context coefficient value. The method also includes including the entropy decoded current transform coefficient in an output bitstream.

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Patent Owner(s)

  • GOOGLE LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ventelae, Jaako Tuomas Aleksi Sunnyvale, US 2 0

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