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Content Provider | IET Digital Library |
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Author | Sun, Xuebin Chen, Xiaodong Xu, Yong Wang, Yi Yu, Daoyin |
Abstract | As the latest video coding standard, high-efficiency video coding (HEVC) achieves better performance and supports higher resolution compared with the predecessor standard, H.264/advanced video coding (AVC). Intra-coding is an important feature in HEVC standard, which reduces the spatial redundancy significantly, due to the flexible coding structure, and high density of angular prediction modes. However, the improvement on coding efficiency is obtained at the expense of the extraordinary computation complexity. This study presents a novel coding unit (CU) partitioning technique for HEVC. By using a fast texture complexity detection method, which is based on two-dimensional Haar wavelet transform, texture complexity for each CU can be extracted. According to the Haar wavelet coefficients obtained, an early CU splitting termination is proposed to decide whether a CU should be decomposed into four lower dimensions CUs or not. Experimental results demonstrate that the fast CU partition strategy achieves better trade-off between rate-distortion performance and complexity reduction than the previous algorithms. Compared with the reference software HM16.7, the proposed algorithm can lessen the encoding time up to 46.22% on average, with a negligible bit rate increase of 0.45%, and quality losses lower than 0.04 dB, respectively. |
Starting Page | 717 |
Ending Page | 723 |
Page Count | 7 |
ISSN | 17519659 |
Volume Number | 11 |
e-ISSN | 17519667 |
Issue Number | Issue 9, Sep (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-ipr/11/9 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-ipr.2016.1082 |
Journal | IET Image Processing |
Publisher Date | 2017-06-01 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Angular Prediction Modes AVC Coding Efficiency Coding Unit Partitioning Technique Complexity Reduction Computational Complexity Extraordinary Computation Complexity Flexible Coding Structure H.264 Haar Transforms Haar Wavelet Coefficient HEVC Standard High-efficiency Video Coding HM16.7 Image And Video Coding Integral Transforms Intracoding Rate-distortion Performance Reference Software Spatial Redundancy Reduction Video Coding Video Signal Processing Wavelet Transform |
Content Type | Text |
Resource Type | Article |
Subject | Signal Processing Electrical and Electronic Engineering Computer Vision and Pattern Recognition Software |
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