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| author | JackyChen <jackychen@google.com> | 2015-01-05 10:41:12 -0800 |
|---|---|---|
| committer | JackyChen <jackychen@google.com> | 2015-01-05 11:38:42 -0800 |
| commit | fe23539d58b6e4b8411d155cc6fa4c91e5fbacfd (patch) | |
| tree | a8cbe4fb381bb0298072e5934d5dc25e871b7d42 /vp9/common/vp9_mfqe.c | |
| parent | 2fe1bfa5ade46b7f9f3505801071493a7afd4ad0 (diff) | |
| download | libvpx-fe23539d58b6e4b8411d155cc6fa4c91e5fbacfd.tar libvpx-fe23539d58b6e4b8411d155cc6fa4c91e5fbacfd.tar.gz libvpx-fe23539d58b6e4b8411d155cc6fa4c91e5fbacfd.tar.bz2 libvpx-fe23539d58b6e4b8411d155cc6fa4c91e5fbacfd.zip | |
Adopt weighted averaging in MFQE.
By using weighted averaging in the calculation of the frames to be
displayed, we get an average gain of more than 1 db for key frames
whose base qp are 20 higher than non-key frames.
Change-Id: I7bcb2e7b9c6420ea3f73f33204d18b072dffd17c
Diffstat (limited to 'vp9/common/vp9_mfqe.c')
| -rw-r--r-- | vp9/common/vp9_mfqe.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/vp9/common/vp9_mfqe.c b/vp9/common/vp9_mfqe.c index 92650e954..110404f5a 100644 --- a/vp9/common/vp9_mfqe.c +++ b/vp9/common/vp9_mfqe.c @@ -167,10 +167,10 @@ static void mfqe_block(BLOCK_SIZE bs, const uint8_t *y, const uint8_t *u, // it might be a lighting change in smooth area. When there is a // lighting change in smooth area, it is dangerous to do MFQE. if (sad > 1 && sad < sad_thr && vdiff > sad * 3 && vdiff < 150) { - // TODO(jackychen): Add weighted average in the calculation. - // Currently, the data is copied from last frame without averaging. + int weight = ((float)sad / (sad_thr - 1)) * ((float)vdiff / (150 - 1)) * + (1 << MFQE_PRECISION); apply_ifactor(y, y_stride, yd, yd_stride, u, v, uv_stride, - ud, vd, uvd_stride, bs, 0); + ud, vd, uvd_stride, bs, weight); } else { // Copy the block from current frame (i.e., no mfqe is done). copy_block(y, u, v, y_stride, uv_stride, yd, ud, vd, |