Pareto-Based Method for High Efficiency Video Coding With Limited Encoding Time

作者：Correa Guilherme; Assuncao Pedro A; Agostini Luciano Volcan; da Silva Cruz Luis A

来源：IEEE Transactions on Circuits and Systems for Video Technology, 2016, 26(9): 1734-1745.

DOI：10.1109/TCSVT.2015.2469533

• Encoding time limitation
• High Efficiency Video Coding (HEVC)
• Pareto efficiency
• rate-distortion complexity (R-D-C)

Several different methods have been investigated in recent years, aiming at computational complexity reduction and scaling of High Efficiency Video Coding (HEVC) software implementations. However, maintaining the encoding time per frame or group of pictures (GOPs) below an adjustable upper bound is still an open research issue. A solution for this problem is devised in this paper based on a set of Pareto-efficient encoding configurations, identified through rate-distortion-complexity analysis. The proposed method combines a medium-granularity encoding time control with a fine-granularity encoding time control to accurately limit the HEVC encoding time below a predefined target for each GOP. It is shown that the encoding time can be kept below a desired target for a wide range of encoding time reductions, e.g., up to 90% in comparison with the original encoder. The results also show that compression efficiency loss (Bjontegaard delta-rate) varies from negligible (0.16%) to moderate (9.83%) in the extreme case of 90% computational complexity reduction.

• 出版日期2016-9