Zoe Liu [Wed, 16 Sep 2015 01:58:36 +0000 (18:58 -0700)]
Added a 3rd reference frame LAST3_FRAME
Under experiment CONFIG_LAST3_REF, which can only be turned on when
the experiment of CONFIG_MULTI_REF is on, i.e. LAST3_FRAME can only
be used when LAST2_FRAME is used. CONFIG_LAST3_REF would most likely
be combined with CONFIG_MULTI_REF once the performance improvement
is further confirmed.
On the testset of derflr, using Average PSNR metrics, with HighBitDepth
(HBD) on:
(1) LAST2 HBD obtained +0.579% against base HBD;
(2) LAST2 + LAST3 HBD obtained +0.591% against LAST2 HBD;
(3) LAST2 + LAST3 HBD obtained +1.173% against base HBD.
Zoe Liu [Tue, 15 Sep 2015 21:12:12 +0000 (14:12 -0700)]
Fixed a bug on the number of MAX_MODES in baseline
All the numbers of MAX_MODES have been changed assuming
CONFIG_MULTI_REF. Now correct numbers have been put in for both with and
without the enabling of the experiment MULTI_REF.
Zoe Liu [Fri, 11 Sep 2015 21:57:31 +0000 (14:57 -0700)]
Added MACRO for reference frame encoding
This CL introduces a few macros plus code cleaning on the encoding of
the reference frames. Coding performance remains unchanged.
For the encoding of either the compound reference or the single reference
case, since each bit has different contexts, the tree structure may not
be applied to treat the combined bits as one symbol. It is possible we may
explore the sharing of the same context for all the bits to introduce
the use of tree structure for the next step.
More tuning on the reference frame context design and default
probs are being conducted. This version does not guarantee to
work with other experiments in nextgen. A separate CL will address
the working with all other experiments.
Shunyao Li [Wed, 12 Aug 2015 01:29:41 +0000 (18:29 -0700)]
Super resolution mode (+CONFIG_SR_MODE)
CONFIG_SR_MODE=1, enable SR mode
USE_POST_F=1, enable SR post filter
SR_USE_MULTI_F=1, enable SR post filter family
Not compatible with other experiments yet
Disables some test vector tests when Vp8/Vp9 decoders are disabled
in configuration. Also moves some macros to the vpx level in
line with recent refactoring on the master branch.
Framework for alternate transforms for inter 32x32 and larger based
on dwt-dct hybrid is implemented.
Further experiments are to be condcuted with different
variations of hybrid dct/dwt or plain dwt, as well as super-resolution
mode.
Shunyao Li [Mon, 29 Jun 2015 18:54:17 +0000 (11:54 -0700)]
Optimize bilateral filter to improve speed
Optimization of bilateral filter:
1) Pre-calculate the bilateral filters at all the
levels at the initialization.
2) Convert 1D matrix to 2D matrix, avoid too many
multiplications in the bilateral filter loop.
3) Fix a bug in "loop_bilateral_filter_highbd".
The right-shifted range index can be larger than 255.
Julia Robson [Tue, 2 Jun 2015 13:31:38 +0000 (14:31 +0100)]
Palette high bit depth functionality
Changes to allow high bit depth and palette to be enabled at the
same time by using a 16 bit (instead of 8bit) palette when high
bit depth is enabled and modifying related functions accordingly.
hui su [Sun, 31 May 2015 16:41:12 +0000 (09:41 -0700)]
Add q-index as context for initial token probs
There are 4 entropy tables to select for initial entropy table,
depending on the frame base q-index. The entropy tables are
trained with derf, yt, and stdhd sets. About 0.2% gain on
the following test sets:
The wavelets implemented are 2/6, 5/3 and 9/7 each with
a lifting based scheme for even block sizes. The 9/7
one is a double implementation currently.
This is to start experiments with:
1. Replacing large transforms (32x32 and 64x64) with wavelets
or wavelet-dct hybrids that can hopefully localize errors better
spatially. (Will also need alternate entropy coder)
2. Super-resolution modes where the higher sub-bands may be
selectively skipped from being conveyed, while a smart
reconstruction recovers the lost frequencies.
The current patch includes two types of 32x32 and 64x64
transforms: one where only wavelets are used, and another
where a single level wavelet decomposition is followed
by a lower resolution dct on the low-low band.
Julia Robson [Thu, 4 Jun 2015 14:48:51 +0000 (15:48 +0100)]
Added tests for high bit depth quantize functions
This was originally part of change-id:Idef18f90b111a0d0c9546543d3347e551908fd78
but the rest of that patch has previously been incorporated into nextgen
without these tests.
Jingning Han [Fri, 29 May 2015 06:16:35 +0000 (23:16 -0700)]
Allow vpxdec to produce target tile reconstruction
This commit allows the vpxdec to produce the target tile
reconstruction as its output. When the provided tile index is -1,
the entire corresponding row/column tiles will be reconstructed.
If the tile index is over the upper limit, the decoder will decode
left-most/bottom tile.
Jingning Han [Wed, 27 May 2015 17:48:26 +0000 (10:48 -0700)]
Enable selective key frame tile decoding
This commit allows the decoder to decode selective tiles according
to decoder configuration settings. To decode a single tile out of
the provided key frame bit-stream (test_kf.webm), set compiler
configuration:
Julia Robson [Thu, 21 May 2015 16:53:14 +0000 (17:53 +0100)]
Intrabc high bit depth functionality
Fixing compile errors when intrabc and vp9_highbitdepth are both enabled.
Error arose because intrabc uses vp9_setup_scale_factors_for_frame()
which takes an additional argument (use_highbitdepth) when
vp9_highbitdepth is enabled.
With this patch, the ZEROMV mode is overloaded to represent
a single global dominant motion using one of three models:
1. True zero translation motion (as before)
2. A translation motion different from 0
3. A Rotation-zoom affine model where the predictor is warped
The actual model used is indicated at the frame level for
each reference frame.
A metric that computes the ratio of the error with a global
non-zero model to the error for zero motion, is used to
determine on the encoder side whether to use one of the two
non-zero models or not.
projects / libvpx / log