Patent · US Active

Method of processing an image based on the determination of blockiness level

US9076220B2 · kind B2 · utility

0Cited by

6References

16Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Debing Liu · Beijing, CN
Zhibo Chen · Beijing, CN
Xiaodong Gu · Beijing, CN
Feng Xu · Beijing, CN

Key dates

Filing date	Apr 29, 2010
Grant date	Jul 7, 2015
Priority date	—
Expiry date	Sep 12, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06T2207/30168
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A method for processing an image divided into blocks of pixels is described. The method includes detecting a largest sub-block whose pixels have an equal luminance value and identifying if the detected largest sub-block is or is not a natural texture. Thereafter, a weighted luminance difference is calculated between the detected largest sub-block and neighboring pixels and a block blockiness level is determined on the basis of the number of pixels within the detected largest sub-block, of the identification step and of the weighted luminance difference. The image is then processed on the basis of the block blockiness level.

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