Patent · US Active

Image processing method and image processing apparatus

US9414064B2 · kind B2 · utility

4Cited by

3References

13Claims

0Family size

Assignee

Sun Patent Trust · US

Inventors

Matthias Narroschke · Schaafheim, DE
Thomas Wedi · Groß-Umstadt, DE

Key dates

Filing date	Nov 21, 2012
Grant date	Aug 9, 2016
Priority date	—
Expiry date	Jan 6, 2033

Classification

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

Abstract

An image processing method of performing filtering on image blocks using a plurality of deblocking filters having different filter strengths includes: a first parameter calculating step of calculating a first parameter indicating a boundary strength; a second parameter calculating step of calculating a second parameter indicating a limit value for each of the deblocking filters, based on the first parameter and a quantization parameter; and a selecting step of selecting a deblocking filter to be used in the filtering from among the deblocking filters, using one or more threshold values which are determined based on the second parameter.

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