Fast Coding Unit Depth Decision for High Efficiency Video Coding
2016
Hochschulschrift
Zugriff:
104
High Efficiency Video Coding (HEVC) is a new generation of video coding, which was the successor of H.264/AVC. The name HEVC was given for the consideration of high quality and high efficiency. As the development of HEVC began, HEVC still required more coding time than H.264/AVC. In HEVC, a frame is divided to Largest Coding Unit (LCU) with uniform size, each LCU will be divided into several Coding Unit (CU) with various size. The coding unit partition will form a quad-tree structure. Cost of each coding unit will make decision for coding unit partition. Since HEVC needs to calculate many cost during coding unit partition, the calculation of cost usually consumes a lot of coding time. In order to reduce the computational complexity, we propose a Fast Coding Unit Depth Decision for HEVC. The proposed algorithm will first compare current CU with neighbor CU to predict depth range of current CU. Then, for each CU within this depth range, we will test whether splitting process will terminate early. This test is based on Hadamard cost. The performance of proposed algorithm was capable to speed up the coding time averagely 52% with negligible PSNR loss and slight bitrate increase.
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Fast Coding Unit Depth Decision for High Efficiency Video Coding
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Autor/in / Beteiligte Person: | Wei-HungYeh ; 葉威宏 |
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Veröffentlichung: | 2016 |
Medientyp: | Hochschulschrift |
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