Organisation internationale de normalisation

Category C – Additional colour index representation modes

Test C.1 – Transition copy mode

Proponent: Canon, JCTVC-R0084, JCTVC-S0063

Crosschecker: MediaTek, JCTVC-S0205

In this test, an index prediction method based on transitions will be evaluated. The following index value for the last occurrence of a given index value is stored and used as the inferred index value in the new prediction mode.

Note: Parsing depends on reconstructed palette index values.

Note: An encoder-only parameter change is applied (without changing the RDO algorithm flow) to select index, copy-above, or transition copy.

Gain is 0.0 to 0.6%, depending on the category of test material.