• David Michael Barr's avatar
    [CFL] Uniform Q3 alpha grid with extent [-2, 2] · f6eaa159
    David Michael Barr authored
    Expand the range of alpha to [-2, 2] in Q3.
    Jointly signal the signs, including zeros.
    Use the signs to give context for each quadrant
    and half-axis. The (0, 0) point is excluded.
    Symmetry in alpha_u == alpha_v yields 6 contexts.
    
    Results on Subset1 (Compared to 9136ab7d with CFL enabled)
    
       PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
    -0.0792 | -0.7535 | -0.7574 |  -0.0639 | -0.0843 | -0.0665 |    -0.3324
    
    Change-Id: I250369692e92a91d9c8d174a203d441217d15063
    Signed-off-by: default avatarDavid Michael Barr <b@rr-dav.id.au>
    f6eaa159
enums.h 18.9 KB