Spatially Adaptive Intra Mode Pre-Selection for ERP 360 Video Coding

In this work, we propose a spatially adaptive HEVC intra mode pre-selection for equirectangular (ERP) 360 video coding. The proposed technique exploits the spatial characteristics of 360 video in the ERP projection to reduce the complexity of intra prediction mode selection. The number of intra mode...

Full description

Saved in:
Bibliographic Details
Main Authors: Storch, Iago, Zatt, Bruno, Agostini, Luciano, Correa, Guilherme, da Silva Cruz, Luis A., Palomino, Daniel
Format: Conference Proceeding
Language:English
Subjects:
360 video coding
complexity reduction
Complexity theory
Conferences
Encoding
High efficiency video coding
intra prediction
Optimization
Rate-distortion
Speech processing
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this work, we propose a spatially adaptive HEVC intra mode pre-selection for equirectangular (ERP) 360 video coding. The proposed technique exploits the spatial characteristics of 360 video in the ERP projection to reduce the complexity of intra prediction mode selection. The number of intra modes evaluated in Rate-Distortion Optimization is reduced based on a score technique that is adaptive to the frame region being encoded. Results show that the proposed technique achieves a complexity reduction of 16.5% with low coding efficiency penalties.
ISSN:2379-190X
DOI:10.1109/ICASSP40776.2020.9053374