论文标题
使用用于多功能视频编码的时间成本模型编码复杂性控制
Intra Encoding Complexity Control with a Time-Cost Model for Versatile Video Coding
论文作者
论文摘要
对于最新的视频编码标准多功能视频编码（VVC），编码复杂性比以前的视频编码标准要高得多，以达到更好的编码效率，尤其是用于Intra Intra编码。复杂性成为其部署和使用的主要障碍。即使有许多快速编码算法，将编码复杂性控制在给定级别上实际上仍然很重要。受速率控制算法的启发，我们提出了一种精确控制VVC内部复杂性的方案。在提议的方案中，使用时间平面句（即时间成本或T-C）模型用于CTU编码时间估计。通过组合一组预定义的参数和T-C模型，可以大致控制CTU级的复杂性。然后，为了实现精确的图像级复杂性控制，构建了一个框架，包括不平衡的复杂性预先分配，预设选择和反馈。实验结果表明，对于具有挑战性的内部编码方案，复杂性误差迅速收敛到3.21％，同时保持合理的时间节省和利率延伸（RD）的性能。这证明了所提出的方法的效率。
For the latest video coding standard Versatile Video Coding (VVC), the encoding complexity is much higher than previous video coding standards to achieve a better coding efficiency, especially for intra coding. The complexity becomes a major barrier of its deployment and use. Even with many fast encoding algorithms, it is still practically important to control the encoding complexity to a given level. Inspired by rate control algorithms, we propose a scheme to precisely control the intra encoding complexity of VVC. In the proposed scheme, a Time-PlanarCost (viz. Time-Cost, or T-C) model is utilized for CTU encoding time estimation. By combining a set of predefined parameters and the T-C model, CTU-level complexity can be roughly controlled. Then to achieve a precise picture-level complexity control, a framework is constructed including uneven complexity pre-allocation, preset selection and feedback. Experimental results show that, for the challenging intra coding scenario, the complexity error quickly converges to under 3.21%, while keeping a reasonable time saving and rate-distortion (RD) performance. This proves the efficiency of the proposed methods.
