Paper Info
Title
An adaptive frame complexity based rate quantization model for intra-frame rate control of High Efficiency Video Coding (HEVC).
Abstract
An efficient and accurate R-Q model is greatly important for intra-frame rate control of the latest High Efficiency Video Coding (HEVC) standard. However, previous methods pay more attention to the gradient based rate quantization (R-Q) model for the intra-frame rate control. In this paper, we analyze the drawbacks of the gradient based frame complexity measure when applied different Quantization Parameters (QPs). Then we propose a novel edge based frame complexity measure using the Gaussian Gradient operator with properly selected parameters. In order to tackle the problems that the gradient based rate quantization model fails when using the different QPs, we propose an adaptive frame complexity based R-Q model for intra-frame rate control based on these two complexity measures. Simulations have been conducted based on HM6.2 which is the latest reference software of HEVC. Note that we may be the first to do this work, so we do not have the classical methods which have been implemented in HEVC to compare with. In this paper we implement the traditional gradient based and the Cauchy distribution based rate quantization model in HEVC and compare the performance with each other. Here we use bit rate mismatch ratio as the evaluation method. The simulation results show that by using our proposed scheme, up to 33.1% mismatch ratio reduction compared with the Cauchy distribution based model and up to 13% mismatch ratio reduction compared with the gradient based model for intra frames can be achieved.
Year
Venue
Keywords
2012
Asia-Pacific Signal and Information Processing Association Annual Summit and Conference
gaussian processes
DocType
ISSN
Citations 
Conference
2309-9402
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Lin Sun11557.90
Oscar C. Au21592176.54
Wei Dai3436.76
Yuanfang Guo49518.21
Ruobing Zou5666.05