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Volume: 29 | Article ID: art00002
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A Fast TU Mode Decision Algorithm Based on Residual Difference for HEVC
N. R. Li
K. W. Liang
Z. Y. Chen
H. Y. Jiang
J. T. Fang
P. C. Chang
  DOI :  10.2352/ISSN.2470-1173.2017.2.VIPC-398  Published Online :  January 2017
Abstract

High Efficiency Video Coding (HEVC) is the latest video coding standard. The residual quadtree (RQT) coding structure which provides variable block size for transform coding, is adopted in HEVC to achieve high coding efficiency. However, compared with previous standards, encoding complexity is increased significantly in HEVC due to the advanced encoding structure. A fast transform unit (TU) mode decision algorithm using residual difference is proposed in this paper to reduce the computational complexity. The proposed algorithm utilized the residual difference to determine the criterion of early TU termination and early TU skip. The threshold was trained from the beginning samples of each sequence. Experimental results showed that the proposed algorithm saves up to 75.64% and on average 64% TU encoding time compared with HM 15.0 in low delay P configuration and the loss of average BD-BR is less than 0.5%.

Journal Title : Electronic Imaging
Publisher Name : Society for Imaging Science and Technology
Subject Areas :
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 DOI 10.2352/ISSN.2470-1173.2017.2.VIPC-398
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N. R. Li, K. W. Liang, Z. Y. Chen, H. Y. Jiang, J. T. Fang, P. C. Chang, "A Fast TU Mode Decision Algorithm Based on Residual Difference for HEVC"  in Proc. IS&T Int’l. Symp. on Electronic Imaging: Visual Information Processing and Communication VIII,  2017,  pp 5 - 9,  https://doi.org/10.2352/ISSN.2470-1173.2017.2.VIPC-398

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Copyright © Society for Imaging Science and Technology 2017
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Electronic Imaging
2470-1173
Society for Imaging Science and Technology
10.2352/ISSN.2470-1173.2017.2.VIPC-398
2470-1173(20170129)2017:2L.5;1-
s2.phd
/ist/ei/2017/00002017/00000002/art00002
Articles
A Fast TU Mode Decision Algorithm Based on Residual Difference for HEVC
LiN. R.
LiangK. W.
ChenZ. Y.
JiangH. Y.
FangJ. T.
ChangP. C.
29012017
2017
2
5
9
2017
High Efficiency Video Coding (HEVC) is the latest video coding standard. The residual quadtree (RQT) coding structure which provides variable block size for transform coding, is adopted in HEVC to achieve high coding efficiency. However, compared with previous standards, encoding complexity is increased significantly in HEVC due to the advanced encoding structure. A fast transform unit (TU) mode decision algorithm using residual difference is proposed in this paper to reduce the computational complexity. The proposed algorithm utilized the residual difference to determine the criterion of early TU termination and early TU skip. The threshold was trained from the beginning samples of each sequence. Experimental results showed that the proposed algorithm saves up to 75.64% and on average 64% TU encoding time compared with HM 15.0 in low delay P configuration and the loss of average BD-BR is less than 0.5%.
HEVCRESIDUALINTERTUFAST ALGORITHMTRANSFORM