Adaptive Lagrange multiplier estimation algorithm in HEVC

作者：

Highlights：

• An HEVC standard-compliant adaptive λ estimation algorithm is proposed.

• The reference λ-QP relation can be improved in videos with static background.

• SAD-derived features are defined to model backgrounds, leveraging calculations.

• A static background classifier and a regressor to estimate λ are designed.

• 6,72% of bit-rate savings are achieved with negligible computational cost.

摘要

Highlights•An HEVC standard-compliant adaptive λ estimation algorithm is proposed.•The reference λ-QP relation can be improved in videos with static background.•SAD-derived features are defined to model backgrounds, leveraging calculations.•A static background classifier and a regressor to estimate λ are designed.•6,72% of bit-rate savings are achieved with negligible computational cost.

论文关键词：HEVC,Motion estimation,Rate-distortion optimization,Source coding,Video coding

论文评审过程：Received 25 October 2016, Revised 23 April 2017, Accepted 25 April 2017, Available online 27 April 2017, Version of Record 3 May 2017.

论文官网地址：https://doi.org/10.1016/j.image.2017.04.010