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| author | Yaowu Xu <yaowu@google.com> | 2012-08-06 10:51:20 -0700 |
|---|---|---|
| committer | Yaowu Xu <yaowu@google.com> | 2012-08-14 09:12:15 -0700 |
| commit | e52e8b70250b0f897e6947b5c24db365e489ba07 (patch) | |
| tree | a9fd79226859255bb74bf0caae44e4953f4981d0 /vp8/common | |
| parent | b91219e29eb52d429cc5051c7e7ab5aaac8e7d02 (diff) | |
| download | libvpx-e52e8b70250b0f897e6947b5c24db365e489ba07.tar libvpx-e52e8b70250b0f897e6947b5c24db365e489ba07.tar.gz libvpx-e52e8b70250b0f897e6947b5c24db365e489ba07.tar.bz2 libvpx-e52e8b70250b0f897e6947b5c24db365e489ba07.zip | |
Changed to use reference mv as nearest mv
The reference motion vector selected by surrounding pixels that has
the best matching score is used as nearest motion vector.
The change has shown consistent gain on all test sets, compression
gains range from .2% to .6%. The variation is largely dependent on
various other experiments on or off.
Change-Id: I5552e1c2f6fc57c3e8818a5ee41ffda89af05e75
Diffstat (limited to 'vp8/common')
| -rw-r--r-- | vp8/common/findnearmv.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/vp8/common/findnearmv.c b/vp8/common/findnearmv.c index 1087ee4f8..05789aff2 100644 --- a/vp8/common/findnearmv.c +++ b/vp8/common/findnearmv.c @@ -202,7 +202,9 @@ vp8_prob *vp8_mv_ref_probs(VP8_COMMON *pc, void vp8_find_best_ref_mvs(MACROBLOCKD *xd, unsigned char *ref_y_buffer, int ref_y_stride, - int_mv *best_mv){ + int_mv *best_mv, + int_mv *nearest, + int_mv *near) { int_mv *ref_mv = xd->ref_mv; int bestsad = INT_MAX; int i; @@ -259,6 +261,13 @@ void vp8_find_best_ref_mvs(MACROBLOCKD *xd, lower_mv_precision(best_mv); vp8_clamp_mv2(best_mv, xd); + + if (best_mv->as_int != 0 && + (best_mv->as_mv.row >> 3) != (nearest->as_mv.row >>3 ) && + (best_mv->as_mv.col >> 3) != (nearest->as_mv.col >>3 )) { + near->as_int = nearest->as_int; + nearest->as_int = best_mv->as_int; + } } #endif |