Patent · US Active

Scalable video coding using subblock-based coding of transform coefficient blocks in the enhancement layer

US11589062B2 · kind B2 · utility

2Cited by

51References

17Claims

0Family size

Assignee

GE Video Compression, LLC · US

Inventors

Tobias Hinz · Berlin, DE
Haricharan Lakshman · Berlin, DE
Jan Stegemann · Berlin, DE
Philipp Helle · Berlin, DE
Mischa Siekmann · Berlin, DE
Karsten Suehring · Berlin, DE
Detlev Marpe · Berlin, DE
Heiko Schwarz · Panketal, DE
Christian Bartnik · Berlin, DE
Ali Atef Ibrahim KHAIRAT ABDELHAMID · Berlin, DE
Heiner Kirchhoffer · Berlin, DE
Thomas Wiegand · Berlin, DE

Key dates

Filing date	May 5, 2020
Grant date	Feb 21, 2023
Priority date	—
Expiry date	May 5, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH04N19/463
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A subblock-based coding of transform coefficient blocks of the enhancement layer is rendered more efficient. To this end, the subblock subdivision of the respective transform coefficient block is controlled on the basis of the base layer residual signal or the base layer signal. In particular, by exploiting the respective base layer hint, the subblocks may be made longer along a spatial frequency axis transverse to edge extensions observable from the base layer residual signal or the base layer signal.

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