• Yaowu Xu's avatar
    make uv intra mode coding adaptive to Y mode · 2bbde250
    Yaowu Xu authored
    This commit tries to do UV intra mode coding adaptive to Y intra mode.
    Entropy context is defined as conditional PDF of uv intra mode given
    the Y mode. All constants are normalized with 256 to be fit in 8 bits.
    
    This provides further coding efficiency beyond the quantizer adaptive
    y intra mode coding. Consistent gains were observed on all clips and
    all bit rates for HD all key encoding tests.
    
    To test, configure with
    --enable-experimental --enable-uvintra
    
    Change-Id: I2d78d73f143127f063e19bd0bac3b68c418d756a
    2bbde250
entropymode.c 9.27 KB