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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Miaohui Wang King Ngi Ngan Hongliang Li Huanqiang Zeng |
| Copyright Year | 2015 |
| Description | Author affiliation: Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China (Miaohui Wang; King Ngi Ngan) || Sch. of Electron. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China (Hongliang Li) || Sch. of Inf. Sci. & Eng., Huaqiao Univ., Xiamen, China (Huanqiang Zeng) |
| Abstract | As the concept of block level adaptivity becomes an important feature in recent video CODECs, block level adaptive quantization (BLAQ) is being considered in the High Efficiency Video Coding (HEVC) standard. The BLAQ is based on the assumption that each block should have its own quantization parameter (QP), which can adapt to the local content of video sequences much better, and hence the video encoder with adaptive QP can perform a better perceptual quality. However, in the HEVC reference software, the BLAQ is required to obtain a proper QP for each block by the rate distortion optimization (RDO) scheme and so the computational complexity of the encoder increases significantly. In this paper, an improved BLAQ algorithm is proposed to obtain the adaptive QP for each block. The simulation results show that the proposed method can save more bits as well as require lower computational complexity, compared to the traditional method. |
| Starting Page | 509 |
| Ending Page | 512 |
| File Size | 336974 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781479983919 |
| DOI | 10.1109/ISCAS.2015.7168682 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-05-24 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Quantization (signal) Encoding Distortion Video coding Computational complexity Transforms Rate-distortion |
| Content Type | Text |
| Resource Type | Article |
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