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Add bias to zero/small motion for noisy source.

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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
This commit is contained in:
Marco 2015-11-09 13:36:56 -08:00
parent 19272d866b
commit bd6bf25969
1 changed files with 23 additions and 11 deletions
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34
vp9/encoder/vp9_pickmode.c
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@ -1483,18 +1483,30 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
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