From bd6bf2596957b722ee5d7d789e0fedb9bf86435e Mon Sep 17 00:00:00 2001 From: Marco Date: Mon, 9 Nov 2015 13:36:56 -0800 Subject: [PATCH] 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 --- vp9/encoder/vp9_pickmode.c | 34 +++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 11 deletions(-) diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c index c495c42d4..9db044f6b 100644 --- a/vp9/encoder/vp9_pickmode.c +++ b/vp9/encoder/vp9_pickmode.c @@ -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 -- 2.40.0