• hui su's avatar
    Speed up angle search in intra mode selection · d7c8bc77
    hui su authored
    Estimate angle histogram using gradient analysis, then skip those
    angles that are unlikely to be chosen.
    
    On ext-intra experiment, turning off filter-intra modes:
    for all-key-frame setting, computation overhead is reduced
    by about 40%, coding gain dropped from +2.08% to +1.96% (derflr);
    with kf-max-dist=150, computation overhead is reduced
    by about 60%, coding gain dropped from +0.58% to +0.49% (derflr).
    
    Change-Id: I36687410fb10561b8e1a8eebb1528cf17755bd5b
    d7c8bc77
enums.h 6.02 KB