Complexity Control of High Efficiency Video Encoders for Power-Constrained Devices
Complexity Control of High Efficiency Video Encoders for Power-Constrained Devices
复制标题
DOI：
10.1109/tce.2011.6131165
复制
发表时间：
2011-11-01
影响因子：
4.3
通讯作者：
da Silva Cruz, Luis A.
中科院分区：
文献类型：
--
作者：
Correa, Guilherme;Assuncao, Pedro;da Silva Cruz, Luis A.
由于新的编码工具和相关联的数据结构的更高的算法复杂性，新兴的高效视频编码（HEVC）标准预期需要比其前身多得多的处理能力。本文提出了一种新的复杂度控制方法，为不久的将来HEVC编码器上运行的功率受限的设备。所提出的方法是基于一个决策算法，动态调整由四叉树结构定义的编码单元（CU）的深度。关于CU深度与译码复杂度之间的关系的新证据用于选择性地约束CU深度以便不超过预定义复杂度目标。实验结果表明，编码器的计算复杂度可以降低高达60%，而速率失真（RD）性能的损失可以忽略不计。所提出的方法应用于不久的将来使用HEVC编解码器的多媒体便携式设备（1）。
The emerging High Efficiency Video Coding (HEVC) standard is expected to require much more processing power than its predecessors due to the higher algorithmic complexity of new coding tools and associated data structures. This paper proposes a novel complexity control method for the near future HEVC encoders running on power-constrained devices. The proposed method is based on a decision algorithm that dynamically adjusts the depth of the Coding Units (CU) defined by quad-tree structures. New evidence about the relationship between CU depth and coding complexity is used to selectively constrain the CU depth in order to not exceed a predefined complexity target. The experimental results show that the encoder computational complexity can be downscaled by up to 60% at the cost of negligible loss of rate-distortion (RD) performance. The proposed method finds application in the near future multimedia portable devices using HEVC codecs(1).