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1. (WO2015048453) SUB-PREDICTION UNIT (PU) BASED TEMPORAL MOTION VECTOR PREDICTION IN HEVC AND SUB-PU DESIGN IN 3D-HEVC

Pub. No.:    WO/2015/048453    International Application No.:    PCT/US2014/057732
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Sat Sep 27 01:59:59 CEST 2014
IPC: H04N 19/00
Applicants: QUALCOMM INCORPORATED
Inventors: CHEN, Ying
VAN DER AUWERA, Geert
ZHANG, Li
LIU, Hongbin
Title: SUB-PREDICTION UNIT (PU) BASED TEMPORAL MOTION VECTOR PREDICTION IN HEVC AND SUB-PU DESIGN IN 3D-HEVC
Abstract:
Techniques are described for sub-prediction unit (PU) based motion prediction for video coding in HEVC and 3D-HEVC. In one example, the techniques include an advanced temporal motion vector prediction (TMVP) mode to predict sub-PUs of a PU in single layer coding for which motion vector refinement may be allowed. The advanced TMVP mode includes determining motion vectors for the PU in at least two stages to derive motion information for the PU that includes different motion vectors and reference indices for each of the sub-PUs of the PU. In another example, the techniques include storing separate motion information derived for each sub-PU of a current PU predicted using a sub-PU backward view synthesis prediction (BVSP) mode even after motion compensation is performed. The additional motion information stored for the current PU may be used to predict subsequent PUs for which the current PU is a neighboring block.