• Deb Mukherjee's avatar
    Supporting high precision 1/8-pel motion vectors · 18e90d74
    Deb Mukherjee authored
    This is the initial patch for supporting 1/8th pel
    motion. Currently if we configure with enable-high-precision-mv,
    all motion vectors would default to 1/8 pel. Encode and
    decode syncs fine with the current code. In the next phase
    the code will be refactored so that we can choose the 1/8
    pel mode adaptively at a frame/segment/mb level.
    
    Derf results:
    http://www.corp.google.com/~debargha/vp8_results/enhinterp_hpmv.html
    (about 0.83% better than 8-tap interpoaltion)
    
    Patch 3: Rebased. Also adding 1/16th pel interpolation for U and V
    
    Patch 4: HD results.
    http://www.corp.google.com/~debargha/vp8_results/enhinterp_hd_hpmv.html
    Seems impressive (unless I am doing something wrong).
    
    Patch 5: Added mmx/sse for bilateral filtering, as well as enforced
    use of c-versions of subpel filters with 8-taps and 1/16th pel;
    Also redesigned the 8-tap filters to reduce the cut-off in order to
    introduce a denoising effect. There is a new configure option
    sixteenth-subpel-uv whic...
    18e90d74
decodemv.c 31.5 KB