Patent · US Active

Methods and apparatus for artifact removal for bit depth scalability

US8391353B2 · kind B2 · utility

2Cited by

23References

14Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Peng Yin · Ithaca, US
Jiancong Luo · Skillman, US
Yong Ying Gao · Beijing, CN
Yu Wen Wu · Beijing, CN

Key dates

Filing date	Oct 14, 2008
Grant date	Mar 5, 2013
Priority date	—
Expiry date	Jul 28, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/86
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Apparatus and methods are described for encoding and decoding an enhancement layer. A deblocking filter is applied at the enhancement layer for bit depth scalability. The deblocking filter is adjusted to remove coding artifacts caused by local inverse tone mapping for intra-layer texture prediction for the bit depth scalability. The boundary strength of the deblocking filter is adjusted based on a threshold that, in turn, is based on a difference of inverse tone mapping parameters for a block and an adjacent block.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.