commit 3ca43bf0aee35c25deba512f92dbe67a362619d3
author Joe Young <joeyoung@google.com> Fri Oct 06 15:12:46 2017 -0700
committer Joe Young <joeyoung@google.com> Fri Oct 27 15:20:48 2017 -0700
tree 396b48a8fa14f5e10fc4981cc2bc229c445318cf
parent 88f0dd642cdb07752b2a29b761dd3e5a1d35a7c0

Ext-intra modification/tuning

For ext-intra direcation intra modes:

1. Use neighbor block modes to modify edge filtering strength
   Coding gain (lowres/midres/hdres):
     (8 keyframes)
     PSNR: -0.19 -0.22 -0.10
     SSIM: -0.29 -0.27 -0.13

2. Use context-based cdf to code angle_delta syntax
     (8 keyframes)
     PSNR: -0.20 -0.24 -0.27
     SSIM: -0.29 -0.33 -0.37

3. Filter corner sample:
     (8 keyframes)
     PSNR: -0.01 -0.02 -0.05
     SSIM: -0.03 -0.04 -0.05

Combined Bd-rate improvement for 8 keyframes
     PSNR: -0.40 -0.47 -0.40
     SSIM: -0.57 -0.60 -0.51

Change-Id: Id47ac17b6bf91cd810b70cacfc5b457341f417f3

configure

diff --git a/configure b/configure
index 5cd2fc1..fd13fe0 100755
--- a/configure
+++ b/configure
@@ -261,6 +261,7 @@
     ext_intra
     filter_intra
     intra_edge
+    ext_intra_mod
     intrabc
     interintra
     wedge
@@ -554,6 +555,7 @@
     enabled ctx1d && soft_enable lv_map
     enabled ctx1d && soft_enable ext_tx
     enabled compound_round && soft_enable convolve_round
+    enabled ext_intra_mod && enable_feature intra_edge
     enabled intra_edge && enable_feature ext_intra
     enabled ncobmc_adapt_weight && enable_feature motion_var
     enabled bgsprite && enable_feature global_motion