CE2: Intra block copy memory access (8)
(Consideration of this topic was chaired by JRO on Friday 06-19, 14:30-16:00.)
CE2 summary and general discussion (2)
1.1.1.1.1.1.1.1.51JCTVC-U0022 CE2: Summary report for Core Experiment 2 on Intra block copy memory access [K. Rapaka, C. Gisquet, J. Lainema, X. Xu (CE coordinators)]
Aspects of this CE were summarized and considered as shown below.
JCTVC-U0053 CE2 Test 2: Intra block copy constraints on filtering
Proposal: Don't allow IBC when filtering (SAO/DBF) is enabled. This requires a flag enabling/disabling the filters at the CTU level (otherwise, when disabling it for the whole slice, performance would be too bad). Requires two-pass encoding.
JCTVC-U0034 CE2: Test 3 on intra block copy constraints on filtering (single-pass encoding decisions)
Proposal: Same as test 2, but inferring a decision from previous coded blocks based on statistics (by tendency, filtering is rather turned off for screen content, not for natural content).
During the discussion, it was also suggested by experts that, whereas DBF is less beneficial for screen content, SAO could be beneficial.
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