ref: bd6bf2596957b722ee5d7d789e0fedb9bf86435e
parent: 19272d866bde3a8c3f9c8395ba38e8ff3b42bb5a
author: Marco <[email protected]>
date: Mon Nov 9 08:36:56 EST 2015
Add bias to zero/small motion for noisy source. Change is only for real-time mode, speed >= 5, and non-screen content mode. Add bias to zero/low motion for big blocks, if noise estimation is enabled and noise level is above threshold. Change-Id: I3a0a4608ede6aa535bda6eca528d20f8aba738e7
--- a/vp9/encoder/vp9_pickmode.c
+++ b/vp9/encoder/vp9_pickmode.c
@@ -1483,18 +1483,30 @@
this_rdc.rate += ref_frame_cost[ref_frame];
this_rdc.rdcost = RDCOST(x->rdmult, x->rddiv, this_rdc.rate, this_rdc.dist);
- // Bias against non-zero (above some threshold) motion for large blocks.
- // This is temporary fix to avoid selection of large mv for big blocks.
if (cpi->oxcf.speed >= 5 &&
- cpi->oxcf.content != VP9E_CONTENT_SCREEN &&
- (frame_mv[this_mode][ref_frame].as_mv.row > 64 ||
- frame_mv[this_mode][ref_frame].as_mv.row < -64 ||
- frame_mv[this_mode][ref_frame].as_mv.col > 64 ||
- frame_mv[this_mode][ref_frame].as_mv.col < -64)) {- if (bsize == BLOCK_64X64)
- this_rdc.rdcost = this_rdc.rdcost << 1;
- else if (bsize >= BLOCK_32X32)
- this_rdc.rdcost = 3 * this_rdc.rdcost >> 1;
+ cpi->oxcf.content != VP9E_CONTENT_SCREEN) {+ // Bias against non-zero (above some threshold) motion for large blocks.
+ // This is temporary fix to avoid selection of large mv for big blocks.
+ if (frame_mv[this_mode][ref_frame].as_mv.row > 64 ||
+ frame_mv[this_mode][ref_frame].as_mv.row < -64 ||
+ frame_mv[this_mode][ref_frame].as_mv.col > 64 ||
+ frame_mv[this_mode][ref_frame].as_mv.col < -64) {+ if (bsize == BLOCK_64X64)
+ this_rdc.rdcost = this_rdc.rdcost << 1;
+ else if (bsize >= BLOCK_32X32)
+ this_rdc.rdcost = 3 * this_rdc.rdcost >> 1;
+ }
+ // If noise estimation is enabled, and estimated level is above threshold,
+ // add a bias to LAST reference with small motion, for large blocks.
+ if (cpi->noise_estimate.enabled &&
+ cpi->noise_estimate.level >= kMedium &&
+ bsize >= BLOCK_32X32 &&
+ ref_frame == LAST_FRAME &&
+ frame_mv[this_mode][ref_frame].as_mv.row < 8 &&
+ frame_mv[this_mode][ref_frame].as_mv.row > -8 &&
+ frame_mv[this_mode][ref_frame].as_mv.col < 8 &&
+ frame_mv[this_mode][ref_frame].as_mv.col > -8)
+ this_rdc.rdcost = 7 * this_rdc.rdcost >> 3;
}
// Skipping checking: test to see if this block can be reconstructed by