Coding of intra-prediction modes

US12041228B2 · kind B2 · utility

Assignee

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

Inventors

• Jonathan PFAFF · Berlin, DE
• Tobias Hinz · Berlin, DE
• Philipp Helle · Berlin, DE
• Philipp MERKLE · Berlin, DE
• Bjoern STALLENBERGER · Berlin, DE
• Michael Schaefer · Berlin, DE
• Benjamin Bross · 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: Dec 13, 2021
• Grant date: Jul 16, 2024
• Expiry date: May 29, 2042

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/70
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

Apparatus configured to derive a set-selective syntax element indicating whether the predetermined block is to be predicted using one of a first set of intra-prediction modes comprising a DC intra prediction mode and angular prediction modes. If the set-selective syntax element indicates that the predetermined block is to be predicted using one of the first set of intra-prediction modes, the apparatus is configured to use a list of most probable intra-prediction modes. If the set-selective syntax element indicates that the predetermined block is not to be predicted using one of the first set of intra-prediction modes, the apparatus is configured to use a matrix-based intra-prediction mode. The list of most probable intra-prediction modes is formed such that the list of most probable intra-prediction modes is free of the DC intra prediction mode in case of the neighbouring blocks being predicted by any of the angular intra prediction modes.