Scalable video coding using inter-layer prediction contribution to enhancement layer prediction

US11134255B2 · kind B2 · utility

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: Jul 2, 2019
• Grant date: Sep 28, 2021
• Expiry date: Jul 2, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/463
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A scalable video decoder is described which is configured to reconstruct a base layer signal from a coded data stream to obtain a reconstructed base layer signal; and reconstruct an enhancement layer signal including spatially or temporally predicting a portion of an enhancement layer signal, currently to be reconstructed, from an already reconstructed portion of the enhancement layer signal to obtain an enhancement layer internal prediction signal; forming, at the portion currently to be reconstructed, a weighted average of an inter-layer prediction signal obtained from the reconstructed base layer signal, and the enhancement layer internal prediction signal to obtain an enhancement layer prediction signal such that a weighting between the inter-layer prediction signal and the enhancement layer internal prediction signal varies over different spatial frequency components; and predictively reconstructing the enhancement layer signal using the enhancement layer prediction signal.