generic-library/vpx
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ARF Boost correction for inactive regions.

Browse Source 
Correct the ARF boost calculations to partly discount
inactive or very low energy regions of the image.

Examples (formatting bars and 0 energy areas of animated clips).

Change-Id: I241af058d10aba8c67a4deca36deb913047d4561
This commit is contained in:
paulwilkins 2015-06-15 11:28:38 +01:00
parent 8565a1c99a
commit e4702deeec
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
vp9/encoder/vp9_firstpass.c
View File

@ -1450,15 +1450,21 @@ static double calc_frame_boost(VP9_COMP *cpi,
const FIRSTPASS_STATS *this_frame,
double this_frame_mv_in_out,
double max_boost) {
VP9_COMMON *const cm = &cpi->common;
double frame_boost;
const double lq =
vp9_convert_qindex_to_q(cpi->rc.avg_frame_qindex[INTER_FRAME],
cpi->common.bit_depth);
const double boost_q_correction = MIN((0.5 + (lq * 0.015)), 1.5);
const int num_mbs = (cpi->oxcf.resize_mode != RESIZE_NONE)
? cpi->initial_mbs : cpi->common.MBs;
double inactive_pct;
int num_mbs = (cpi->oxcf.resize_mode != RESIZE_NONE)
? cpi->initial_mbs : cpi->common.MBs;
// TODO(paulwilkins): correct for dead zone
// Correct for any inactive zone in the image
inactive_pct = (this_frame->intra_skip_pct / 2) +
((this_frame->inactive_zone_rows * 2) / (double)cm->mb_rows);
inactive_pct = fclamp(inactive_pct, 0.0, 0.5);
num_mbs = (int)MAX(1, num_mbs - (num_mbs * inactive_pct));
// Underlying boost factor is based on inter error ratio.
frame_boost = (BASELINE_ERR_PER_MB * num_mbs) /