Fixed best error reported by loop filter selection, this value is used
during loop restoration to pick best mode. Baseline remains unchanged,
change in BDRate for loop restoration experiment:
-0.628 -> -0.625 for lowres,
-1.262 -> -1.283 for highres.
Change-Id: I69ef1608bc232b250ac46f59e31fdbed1a999dcd
The speed feature sf->lpf_picl == LPF_PICK_MINIMAL_LPF is used
to disable loop filtering. This did not work with the loop-restoration
experiment, but now it is respected.
Note that this speed feature is only used in real-time cpu-used >= 8
settings.
Change-Id: I193723c9ac5f802ec31d8c8b4d37650796e065fd
1. Wiener restoration filter now has normalization and evaluation of
quantization procedure.
2. Corrected scaling of bits in RD cost computation.
3. Changed dynamic range and number of bits for Wiener filter.
Observed gains: Overall 0.58% for low_res, 0.7% for mid_res sequences.
Change-Id: I8928b3ea493bfe1790926b00388d6c4bafc08e19
This makes all metric computation to locate at some place, also gets
rid of duplicate code between vp9 and vp10.
Change-Id: I24a2707d183a2419cd18a8343010adae185ffcd4
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
