• Joe Young's avatar
    Ext-intra modification/tuning · 3ca43bf0
    Joe Young authored
    For ext-intra direcation intra modes:
    
    1. Use neighbor block modes to modify edge filtering strength
       Coding gain (lowres/midres/hdres):
         (8 keyframes)
         PSNR: -0.19 -0.22 -0.10
         SSIM: -0.29 -0.27 -0.13
    
    2. Use context-based cdf to code angle_delta syntax
         (8 keyframes)
         PSNR: -0.20 -0.24 -0.27
         SSIM: -0.29 -0.33 -0.37
    
    3. Filter corner sample:
         (8 keyframes)
         PSNR: -0.01 -0.02 -0.05
         SSIM: -0.03 -0.04 -0.05
    
    Combined Bd-rate improvement for 8 keyframes
         PSNR: -0.40 -0.47 -0.40
         SSIM: -0.57 -0.60 -0.51
    
    Change-Id: Id47ac17b6bf91cd810b70cacfc5b457341f417f3
    3ca43bf0
rd.c 55.7 KB