This commit accounts for the context based probability model for
motion vector cost estimate in rate-distortion optimization.
Change-Id: Ia068a9395dcb4ecc348f128b17b8d24734660b83
This commit converts the scalar motion vector probability model
into vector format for later precise estimate.
Change-Id: I7008d047ecc1b9577aa8442b4db2df312be869dc
This commit fixes an enc/dec mismatch in the dynamic motion vector
referencing experiment introduced in 837ef00.
Change-Id: I9fbe116fce118a80ef0f96bf41ce1f802547c2ee
This bug made the rd loop use one-side obmc (compound of the current
predictor and the predictors of the left mi's, while the above ones
are ignored by mistake) to determine whether to use obmc. This fix
improved the compression performance by ~0.6% on different test sets.
Coding gain (%) of obmc experiment on derflr/derfhd/hevcmr/hevchd:
1.568/TBD/1.628/TBD
Change-Id: I43b239bedf9a8eebfd02315b1b036e140a998140
Add frame-level condition for reference masking: under external or
internal dynamic resize, allow for reference masking if none of
the references have been scaled.
Peviously, reference masking was turned off for the stream if dynamic
resize feature was enabled or an external resize event occurred.
reference_masking gives speed up with little/no loss in compression.
For speed 7 on rtc set: encoding time decreases by about 5-7%,
avgPSNR/SSIM goes down ~0.2%.
Change-Id: Ie4444577451ef954414d8fb4b2c99d65cadf1746
This commit fixes issue 1141. The issue was triggered in multi-tile
encoding. The change properly saves and restores the block context
information in the real-time mode selection process. It removes
several redundant memcpy operations in sub8x8 intra block mode search.
Change-Id: I35c9ad197f4bd500ec39b5fc833f052f19eee010
Removes the USE_DST2 flag that was on by default. DST2 performs
slightly better that DST1 and is faster to compute.
Change-Id: Ifb788f3f0a0e1995d7625230cec144b876f01206
Using this we can eliminate large numbers of calls to predict intra,
and is also faster than most of the variance functions it replaces.
This is an equivalence transform so coding performance is unaffected.
Encoder speedup is approx 7% when var_tx, super_tx and ext_tx are all
enabled.
Change-Id: I0d4c83afc4a97a1826f3abd864bd68e41bb504fb
External dynamic resize with swapping width and height was
not handled properly.
Fix is to re-init loop-filter under certain condtions.
Modify unittest to test this case.
Without this change test will fail.
Relates to: https://bugs.chromium.org/p/webm/issues/detail?id=1140
Change-Id: I7d81ca7fe0783b3bc103a52a7b7cf073a96be26e
In this experiment, an obmc inter prediction mode is enabled for
>= 8X8 inter blocks. When the obmc flag is on, the regular block-
based motion compensation will be refined by using predictors of
the above and left blocks.
Fixed some compatibility issues with vp9_highbitdepth, supertx,
ref_mv, and ext_interp.
Coding gain (%) on derflr/hevcmr/hevchd
OBMC:
1.047/1.022/0.708
OBMC + SUPERTX:
1.652/1.616/1.137
SUPERTX:
0.862/0.779/0.630
Change-Id: I5d8d3c4729c6d3ccb03ec7034563107893103b7f
Adds a wiener filter based restoration scheme in loop which can
be optionally selected instead of the bilateral filter.
The LMMSE filter generated per frame is a separable symmetric 7
tap filter. Three parameters for each of horizontal and vertical
filters are transmitted in the bitstream. The fourth parameter
is obtained assuming the sum is normalized to 1.
Also integerizes the bilateral filters, along with other
refactoring necessary in order to support the new switchable
restoration type framework.
derflr: -0.75% BDRATE
[A lot of videos still prefer bilateral, however since many frames
now use the simpler separable filter, the decoding speed is
much better].
Further experiments to follow, related to replacing the bilateral.
Change-Id: I6b1879983d50aab7ec5647340b6aef6b22299636
allocations done within this function are protected with
vpx_internal_error; adding the setjmp fixes a crash in
vp10_lookahead_push() under low memory conditions.
Change-Id: I5515017cd71b218840c506791b3a517da7ffc93e
allocations done within this function are protected with
vpx_internal_error; adding the setjmp fixes a crash in
vp9_lookahead_push() under low memory conditions.
Change-Id: I4b79dca37cc7fadc4b7633f0db44c0e406799bc6
This commit adds computation of PSNRHVS for highbitdepth build, it
also adds tests to make sure the calculation of psnrhvs metric for
10 and 12 bit correct.
Change-Id: Iac8a8073d2b3e3ba5d368829d770793212fa63b6
This commit aligns the rate-distortion metrics for both luma and
chroma components in super transform rate-distortion optimization.
It improves the coding gains due to var-tx and supertx experiments
by 0.2% for high resolution test sets.
Change-Id: Ib89d99e29cb5ee27b1f867e301954d4164d8b364
Brings the following commits to vp10:
269428e Tie the bit cost scale to a define.
d13385c Switch to 9-bit rate cost constants built on a 256 probability denominator.
ad43a73 Fix a signed overflow in vp9 motion cost.
1c9b091 Fix some interger overflow errors
fac947d Restore previous motion search bit-error scale.
Change-Id: I598ba7ee7efcde18439c31dfa96b86cbf297a580
An issue exists with reference_masking in non-rd pickmode for spatial
scaling. It was kept off for internal dynamic resizing and svc, this
change is to keep it off also for external dynamic resizing.
Update to external resize test, and update TODO to re-enable this
at frame level when references have same scale as source.
Change-Id: If880a643572127def703ee5b2d16fd41bdbf256c
This commit adds the computation of fastSSIM for highbitdepth build,
it also modifies the hbdmetric test to be more generic and applicable
for fastSSIM.
The 255 used for calculating ssim constants c1 and c2 is not exactly
scaled by 4x and 16x to 1023 and 4095, therefore requries the metric
test to have a thresold more tolerant than 0, currently at 0.03dB.
Change-Id: I631829da7773de400e77fc36004156e5e126c7e0
Jingning Han
Yaowu Xu
Yue Chen
Debargha Mukherjee
Marco
James Zern
Geza Lore
Hui Su
Alex Converse
Angie Chiang