Patent · US Active

Image coding method, image decoding method, and apparatuses therefor

US8885730B2 · kind B2 · utility

2Cited by

0References

20Claims

0Family size

Assignee

PANASONIC HOLDINGS CORPORATION · JP

Inventors

Matthias Narroschke · Schaafheim, DE
Steffen Wittmann · Klipphausen, DE

Key dates

Filing date	Jun 10, 2010
Grant date	Nov 11, 2014
Priority date	—
Expiry date	Dec 4, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/94
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The image coding method for improving the filtering quality and suppressing increase in the transmission bandwidth includes: selecting filter data elements of the first and second component filters from a filter memory (1330), and obtaining indexes stored in association with the selected filter data elements in the filter memory (1330) (S10, S11); coding a macroblock using the two filter data elements (S12); adding the two indexes to a coded video signal (S13); calculating the filter data elements of the first and second component filters based on a slice, and assigning indexes to the filter data elements (S20, S21); storing, in the filter memory (1330), a corresponding one of the calculated filter data elements and the index in association with each other for each of the component filters (S22); and adding the two calculated filter data elements to the coded video signal (S23).

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