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首页> 外文会议>2014 IEEE International Conference on Security, Pattern Analysis, and Cybernetics >Numerical analysis based fast intra prediction algorithm in HEVC
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Numerical analysis based fast intra prediction algorithm in HEVC

机译：HEVC中基于数值分析的快速帧内预测算法

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摘要

The latest video coding standard HEVC (High Efficiency Video Coding) provides up to 35 intra prediction modes to achieve more accurate prediction. However, a larger number of prediction modes leads to higher encoding complexity. To accelerate the intra mode decision in HEVC, an improved algorithm based on numerical analysis of the neighboring reference samples of coding units is proposed. Four filters are designed to reduce the candidate modes. And an algorithm to seek the proper thresholds for the filters is developed. The experimental results show that when compared to the test model HM 12.0 of HEVC, the proposed method can save up to 28.40% of encoder time with slight increase of BD-rate and negligible loss of PSNR. Furthermore, it is easy to combine our approach with other fast algorithms to achieve more improvement.
机译：最新的视频编码标准HEVC（高效视频编码）提供多达35种帧内预测模式，以实现更准确的预测。然而，大量的预测模式导致较高的编码复杂度。为了加速HEVC中的帧内模式判决，提出了一种基于编码单元相邻参考样本数值分析的改进算法。设计了四个滤波器以减少候选模式。并开发了一种算法来为滤波器寻找合适的阈值。实验结果表明，与HEVC的HM 12.0测试模型相比，该方法可节省多达28.40％的编码器时间，而BD速率略有增加，PSNR的损失可忽略不计。此外，很容易将我们的方法与其他快速算法结合起来以实现更多改进。

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