lgt-from-pred: transforms based on prediction
In this experiment, sharp image discontinuity in the predicted
block is detected. Based on this discontinuity, we choose
particular LGTs as row and column transforms.
Bitstream syntax, entropy coding, and RD search for LGT are added.
One binary symbol is used to signal whether LGT is used. This
experiment can work independently with the lgt experiment.
lowres: -0.414% for key frames, -0.151% overall
midres: -0.413% for key frames, -0.161% overall
Change-Id: Iaa2f2c2839c34ca4134fa55e77870dc3f1fa879f
diff --git a/configure b/configure
index 4a3229a..e30da0b 100755
--- a/configure
+++ b/configure
@@ -329,6 +329,7 @@
smooth_hv
var_refs
lgt
+ lgt_from_pred
sbl_symbol
ncobmc_adapt_weight
bgsprite
@@ -575,6 +576,8 @@
enabled ext_comp_refs && enable_feature ext_refs
enabled ext_comp_refs && enable_feature one_sided_compound
enabled rect_tx_ext && enable_feature rect_tx
+ enabled lgt_from_pred && enable_feature ext_tx
+ enabled lgt_from_pred && disable_feature mrc_tx
enabled cfl && enable_feature smooth_hv
enabled cdef_singlepass && enable_feature cdef
enabled new_multisymbol && enable_feature restrict_compressed_hdr
