Modify ransac to keep the N best global motions by num_inliers and
variance rather than a single one. Compute the error advantage for
each in encode_frame_internal(), and use the best as the global motion
for that pair of <target, reference> frames.
Improvements for different values of N:
N %PSNR gain on lowres
1 (current impl) 1.287
2 1.328
4 1.370
8 1.419
16 1.427
32 1.439
Change-Id: Ic0c9066a3f175a5ea0a78828cd244104e70144ba
Adds functinoality for least-squares, RANSAC as well as encoding and
decoding with new constrained homographies that warp blocks to horizontal
and/or vertical trapezoids. This is for future experimentation. None
of the models are actually enabled in the code.
Change-Id: I1936018c6b11587d6fd83c3a2c63548cb641b33f
When global-motion is enabled, a considerable amount
of encoder time is spent in the functions in corner_match.c.
This patch optimizes those functions to be 3.5-4x as fast,
leading to an end-to-end encoder speed improvement
(on 20 frames of tempete_cif.y4m) of:
200kbps: ~26% faster
800kbps: ~19% faster
2800kbps: ~12% faster
Change-Id: I04d3f87484c36c41eb5a1e86e814f2accbe86297
Cherry-Picked the following commits:
0defd8f Changed "WebM" to "AOMedia" & "webm" to "aomedia"
54e6676 Replace "VPx" by "AVx"
5082a36 Change "Vpx" to "Avx"
7df44f1 Replace "Vp9" w/ "Av1"
967f722 Remove kVp9CodecId
828f30c Change "Vp8" to "AOM"
030b5ff AUTHORS regenerated
2524cae Add ref-mv experimental flag
016762b Change copyright notice to AOMedia form
81e5526 Replace vp9 w/ av1
9b94565 Add missing files
fa8ca9f Change "vp9" to "av1"
ec838b7 Convert "vp8" to "aom"
80edfa0 Change "VP9" to "AV1"
d1a11fb Change "vp8" to "aom"
7b58251 Point to WebM test data
dd1a5c8 Replace "VP8" with "AOM"
ff00fc0 Change "VPX" to "AOM"
01dee0b Change "vp10" to "av1" in source code
cebe6f0 Convert "vpx" to "aom"
17b0567 rename vp10*.mk to av1_*.mk
fe5f8a8 rename files vp10_* to av1_*
Change-Id: I6fc3d18eb11fc171e46140c836ad5339cf6c9419
emilkeyder@google.com
Debargha Mukherjee
David Barker
Yaowu Xu
Sarah Parker