Complexity control of HEVC for video conferencing

Abstract

In this paper, we propose an effective complexity control approach for video conferencing scenarios on HEVC platform. A complexity control formulation is established to determine the number of depth-constrained largest coding units (LCUs) according to the target complexity. By limiting the maximum depths of different LCUs to different levels, the encoding complexity can be controlled with high accuracy. Different from other approaches, both the objective and perceptual-driven video quality are kindly preserved through taking both the objective and subjective weight maps into consideration when controlling the complexity. The experimental results demonstrate that our approach outperforms the state-of-the art approach with higher control accuracy. Also, despite of complexity reduction, our approach keeps the objective and perceptual-driven quality well.