• Lester Lu's avatar
    lgt-from-pred: transforms based on prediction · 432012f6
    Lester Lu authored
    In this experiment, sharp image discontinuity in the predicted
    block is detected. Based on this discontinuity, we choose
    particular LGTs as row and column transforms.
    
    Bitstream syntax, entropy coding, and RD search for LGT are added.
    One binary symbol is used to signal whether LGT is used. This
    experiment can work independently with the lgt experiment.
    
    lowres: -0.414% for key frames, -0.151% overall
    midres: -0.413% for key frames, -0.161% overall
    
    Change-Id: Iaa2f2c2839c34ca4134fa55e77870dc3f1fa879f
    432012f6
txfm_common.h 28.5 KB