Intra predictions using linear or affine transforms with neighbouring sample reduction

US12075091B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Jonathan PFAFF · Berlin, DE
• Philipp Helle · Berlin, DE
• Michael Schaefer · Berlin, DE
• Roman Rischke · Berlin, DE
• Tobias Hinz · Berlin, DE
• Philipp MERKLE · Berlin, DE
• Bjoern STALLENBERGER · Berlin, DE
• Martin Winken · Berlin, DE
• Mischa Siekmann · Berlin, DE
• Heiko Schwarz · Panketal, DE
• Detlev Marpe · Berlin, DE
• Thomas Wiegand · Berlin, DE

Key dates

• Filing date: Oct 7, 2022
• Grant date: Aug 27, 2024
• Expiry date: Oct 7, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/59
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Techniques for encoding/decoding of video signals are described, e.g. implemented in decoders, encoder, methods and non-transitory storage units storing instructions to perform the methods.A decoder or encoder may be configured to predict a predetermined block of the picture using a plurality of neighbouring samples by reducing the plurality of neighbouring samples to obtain a reduced set of samples values lower, in number of samples, than compared to the plurality of neighbouring samples, subjecting the reduced set of sample values to a linear or affine linear transformation to obtain predicted values for predetermined samples of the predetermined block.