Abstract
Achieving constant video quality is an essential optimization task for video coding applications. In this paper, we propose a two-pass rate control algorithm for High Efficiency Video Coding (HEVC) to reduce the fluctuation of video quality. First, we present a GOP-level rate allocation scheme which aims at minimizing distortion variance among GOPs. To derive an appropriate quantization parameter (QP) for each frame, we establish the distortion-quantizer (D-Q) and the rate-quantizer (R-Q) model based on ν-support vector regression. Further, an R-D tradeoff is designed to adjust the frame QP considering the constant quality control and rate contraints. Extensive experimental results show that the proposed algorithm achieves more constant video quality.
| Original language | English |
|---|---|
| Title of host publication | VCIP 2018: IEEE International Conference on Visual Communications and Image Processing |
| Publisher | IEEE |
| Number of pages | 4 |
| ISBN (Electronic) | 9781538644584 |
| ISBN (Print) | 9781538644591 |
| DOIs | |
| Publication status | Published - Dec 2018 |
| Externally published | Yes |
| Event | 2018 IEEE Visual Communications and Image Processing (VCIP 2018) - Taichung, Taiwan, China Duration: 9 Dec 2018 → 12 Dec 2018 |
Conference
| Conference | 2018 IEEE Visual Communications and Image Processing (VCIP 2018) |
|---|---|
| Country/Territory | Taiwan, China |
| City | Taichung |
| Period | 9/12/18 → 12/12/18 |
Bibliographical note
Publisher Copyright:© 2018 IEEE.
Funding
This work was supported in part by the National Natural Science Foundation of China (No. 61471273 and 61771348), and the Wuhan Morning Light Plan of Youth Science and Technology (No. 2017050304010302).
Keywords
- Constant video quality
- High Efficiency Video Coding
- Two-pass rate control
- VBR