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| 论文编号: |
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| 第一作者所在部门: |
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| 中文论文题目: |
Rate control for non-uniform video in HEVC
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| 英文论文题目: |
Rate control for non-uniform video in HEVC
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| 论文题目英文: |
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| 作者: |
Tong, Tang
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| 论文出处: |
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| 刊物名称: |
JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION
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| 年: |
2017
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| 卷: |
48 |
| 期: |
C |
| 页: |
254-267 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
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| 摘要: |
Rate control plays an important role in video coding, and most of the existing rate control schemes are based on the assumption that the video contents are uniform. However, for non-uniform video applications, such as screen content videos and movies, previous rate control schemes may cause severe quality degradation, since the bit allocation strategy is improper and the rate-quantization (R-Q) model parameters may extremely inaccurate. In this paper, firstly an adaptive bit allocation algorithm is proposed for the newest video coding standard high efficiency video coding (HEVC), next a key frame detection method is presented, and finally an accurate intra R-Q model, a model parameter adjusting strategy and a bit feedback strategy are developed for the scene change frame. Experimental results show that the proposed rate control method could achieve more accurate bitrates and better rate-distortion (R-D) performance than previous rate control methods. (C) 2017 Elsevier Inc. All rights reserved. |
| 英文摘要: |
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