• Jingning Han's avatar
    Re-work rate-distortion optimization scheme for transform coding · 696ee004
    Jingning Han authored
    This commit re-works the rate-distortion optimization scheme for
    transform coding. It improves the overall compression performance.
    For derf set, the ext-tx experiment provides 2.27% coding gains,
    and the new scheme that integrates multiple transform type selection
    and recursive transform block partitioning provides a total of 3.24%
    coding gains.
    
    Change-Id: Ia1887c4c44b73dfb915d091d96660a99f09d5cc3
    696ee004
rdopt.c 193 KB