JVET-AE0177 Non-EE2: Local illumination compensation with slope adjustment [Y. Wang, K. Zhang, Y. He, H. Liu, L. Zhang (Bytedance)]

This contribution presents a method of local illumination compensation with slope adjustment, in which an adjustment parameter is used to modify parameters of LIC. On top of ECM-9.0, simulation results of the proposed method are reported (estimated) as below:

• RA*: {-0.10%, -0.22%, -0.17%; 112.9%, 100.3%};
• LDB*: {-0.10%, -0.18%, -0.31%; 120.8%, 100.4%}.

Slope adjustment was similar to CCLM.

Several experts said this is interesting and straightforward, but the tradeoff is not reasonable.

Further study was recommended on largely reducing encoding time while keeping the benefit in compression, and potentially further improvements in compression.