Title
CNN Accelerated Intra Video Coding, Where Is the Upper Bound?
Abstract
The very high complexity of the High Efficiency Video Coding standard (HEVC) is the main hurdle for its wide deployment and use. To tackle this problem, a number of recent research outcomes exploit Convolutional Neural Network (CNN) in each HEVC module for reducing the coding complexity. In this paper an effective method to analyse the potential of CNN techniques to reduce the computational cost of HEVC is proposed. A theoretical upper bound for the effectiveness of this approach in common HEVC modules is investigated. The theoretical maximum of learning-based complexity reduction in HEVC and possible reasons for Rate-Distortion (RD) loss are investigated. On the basis of this analysis, an Intra Video Coding Acceleration (IVCA) scheme is proposed, where Border Considered CNN (BC-CNN) based Coding Unit (CU) partition and heuristic Prediction Unit (PU) partition are seamlessly integrated. According to the experimental results, 66.7% of intra coding time can be saved with negligible 1.71% Bjøntegaard delta bit-rate (BDBR) loss. These results partially demonstrate the superiority of the proposed technique against other state-of-the-art approaches aiming at reducing HEVC complexity in intra mode.
Year
DOI
Venue
2019
10.1109/PCS48520.2019.8954494
2019 Picture Coding Symposium (PCS)
Keywords
Field
DocType
High Efficiency Video Coding,Intra prediction,convolutional neural network,complexity reduction
Intra mode,Heuristic,Convolutional neural network,Upper and lower bounds,Computer science,Algorithm,Theoretical computer science,Coding (social sciences),Reduction (complexity),Acceleration
Conference
ISSN
ISBN
Citations 
2330-7935
978-1-7281-4705-5
0
PageRank 
References 
Authors
0.34
4
3
Name
Order
Citations
PageRank
Yan Huang133.03
Li Song232365.87
Ebroul Izquierdo300.34