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1. (WO2018205019) METHODS AND DEVICES FOR INTRA-CODING IN VIDEO COMPRESSION

Pub. No.:    WO/2018/205019    International Application No.:    PCT/CA2018/050544
Publication Date: Fri Nov 16 00:59:59 CET 2018 International Filing Date: Wed May 09 01:59:59 CEST 2018
IPC: H04N 19/159
H04N 19/176
H04N 19/42
H04N 19/91
Applicants: 2236008 ONTARIO INC.
BLACKBERRY LIMITED
Inventors: HE, Dake
MARTIN-COCHER, Gaëlle Christine
FLYNN, David
Title: METHODS AND DEVICES FOR INTRA-CODING IN VIDEO COMPRESSION
Abstract:
Methods and devices for video coding using intra-coding and removing redundant intra modes from a set of candidate intra modes. The methods may determine that at least some candidate intra modes generate candidate prediction blocks that are redundant and, based on that determination, eliminate said at least some of the candidate intra modes to reduce the set to a subset. In some cases, a candidate prediction block is redundant if it is less than a threshold different from another of the candidate prediction blocks identified by one of the candidate intra modes in the set. A function may be applied to the candidate prediction block and the another candidate prediction block to identify redundancy.