JVET-AC0161 Non-EE2: IBC adaptation for coding of natural content [B. Ray, H. Wang, C.-C. Chen, V. Seregin, M. Karczewicz (Qualcomm)]

This contribution investigates adaptation of IBC tool for the coding of camera captured content.

The experimental results on top of ECM-7.0 are as below:

AI(Y/U/V): -0.90%/-0.91%/-0.99%, EncT 128%, DecT 100%

RA(Y/U/V): -0.34%/-0.35%/-0.40%, EncT 106%, DecT 102%

Further, RR-IBC and TM-IBC is disabled and encoding optimization is done. The results on top of ECM-7.0 are as follows:

AI(Y/U/V): -0.75%/-0.88%/-0.90%, EncT 110%, DecT 101%

Additionally, fractional pel motion compensation for IBC is also investigated on top of previous result. The results on top of ECM-7.0 are as follows:

AI(Y/U/V): -0.92%/-1.08%/-1.14%, EncT 113%, DecT 101%

Aspect 1 is only encoder change (replacing hash-based search) and configuration change

Aspect 2 intoduces fractional displacement which would be normative change

For RA, it is only used in I slices.

It was agreed to investigate this in an EE.