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| author | Yaowu Xu <yaowu@google.com> | 2015-06-26 15:54:43 -0700 |
|---|---|---|
| committer | Yaowu Xu <yaowu@google.com> | 2015-06-26 15:54:43 -0700 |
| commit | 9f14bbfd801550ce96144c039f69d0c86081c58f (patch) | |
| tree | 25ca4d5397f6e63305ff81464db6e1b299d3e622 /vp9 | |
| parent | 5fe0e55ca4f1c88b0d87448be4bafa4b700125ab (diff) | |
| download | libvpx-9f14bbfd801550ce96144c039f69d0c86081c58f.tar libvpx-9f14bbfd801550ce96144c039f69d0c86081c58f.tar.gz libvpx-9f14bbfd801550ce96144c039f69d0c86081c58f.tar.bz2 libvpx-9f14bbfd801550ce96144c039f69d0c86081c58f.zip | |
Fixed a variance calculation
This commit fixed a mistake in variance calculation.
Thanks to Xintong for spotting the error.
Change-Id: Ia285fc0128c00f0234a73b0a7eba6adc88b8a7de
Diffstat (limited to 'vp9')
| -rw-r--r-- | vp9/encoder/vp9_firstpass.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c index 3d7843ea7..16640fed9 100644 --- a/vp9/encoder/vp9_firstpass.c +++ b/vp9/encoder/vp9_firstpass.c @@ -1031,8 +1031,10 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) { fps.mvr_abs = (double)sum_mvr_abs / mvcount; fps.MVc = (double)sum_mvc / mvcount; fps.mvc_abs = (double)sum_mvc_abs / mvcount; - fps.MVrv = ((double)sum_mvrs - (fps.MVr * fps.MVr / mvcount)) / mvcount; - fps.MVcv = ((double)sum_mvcs - (fps.MVc * fps.MVc / mvcount)) / mvcount; + fps.MVrv = ((double)sum_mvrs - + ((double)sum_mvr * sum_mvr / mvcount)) / mvcount; + fps.MVcv = ((double)sum_mvcs - + ((double)sum_mvc * sum_mvc / mvcount)) / mvcount; fps.mv_in_out_count = (double)sum_in_vectors / (mvcount * 2); fps.new_mv_count = new_mv_count; fps.pcnt_motion = (double)mvcount / num_mbs; |