16.1Summary
16.1.1.1.1.1.1.1.1JCTVC-D390 CE13: Summary report on intra smoothing [M. Coban, B. Bross, J. Chen]
This document reported a summary of core experiment 13 on intra smoothing. Six companies have been registered in CE13 and four proposed tools from two companies have been evaluated according to conditions in CE13 core experiment description. Each proposal had a tool that performed lookup table based intra reference smoothing that depended on the intra prediction mode and block size. A second tool that combined the lookup table and signaling was proposed. Coding efficiency and complexity results were presented.
Gain of best proposal (MDHS) is 0.5% for HE and 0.9% for LC.
Comments:
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2-stage Recursive lowpass filter is used; this does not match with the actual approach described in the CE document (LUT based).
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Do we need smoothing? Most probably yes, as we had one in AVC.
Would a solution without switching be sufficient? To be determined.
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