Picture coding supporting block partitioning and block merging

US10743001B2 · kind B2 · utility

Assignee

• GE Video Compression, LLC · US

Inventors

• Philipp Helle · Berlin, DE
• Heiko Schwarz · Panketal, DE
• Detlev Marpe · Berlin, DE
• Thomas Wiegand · Berlin, DE
• Simon Oudin · Berlin, DE
• Benjamin Bross · Berlin, DE

Key dates

• Filing date: Dec 18, 2019
• Grant date: Aug 11, 2020
• Expiry date: Dec 18, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N19/93
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A further coding efficiency increase may be achieved if for a current block of a picture, for which the bit stream signals one of supported partitioning patterns, a reversal of the partitioning by block merging is avoided. In particular, if the signaled one of the supported partitioning patterns specifies a subdivision of the block into two or more further blocks, a removal of certain coding parameter candidates for all further blocks, except a first further block of the further blocks in a coding order, is performed. Particularly, those coding parameter candidates are removed from the set of coding parameter candidates for the respective further block, the coding parameters of which are the same as coding parameters associated with any of the further blocks which, when being merged with the respective further block, would result in one of the supported partitioning pattern. This avoids redundancy between partitioning coding and merging coding.