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vp9: Adjust thresholds for limiting cyclic refresh for noisy content.

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For noisy content, be more aggressive in skippping some blocks for
delta-qp to reduce noise pulsing artifact. Also treat frame boundary
case when dimension is not multiple of superblock size/64.

Only affects non-screen content case, and when source noise
is measured to be high (at least level kMedium).

Change-Id: Ib13a2a20ed1ce37ff3c44d95c3ef2635fd695222
This commit is contained in:
Marco 2016-11-08 15:46:50 -08:00
parent d545c19afa
commit 18794d8ddc
1 changed files with 7 additions and 3 deletions
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10
vp9/encoder/vp9_aq_cyclicrefresh.c
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@ -383,13 +383,14 @@ static void cyclic_refresh_update_map(VP9_COMP *const cpi) {
: vp9_get_qindex(&cm->seg, CR_SEGMENT_ID_BOOST1, cm->base_qindex);
// More aggressive settings for noisy content.
if (cpi->noise_estimate.enabled && cpi->noise_estimate.level >= kMedium) {
consec_zero_mv_thresh = 80;
consec_zero_mv_thresh = 60;
qindex_thresh =
VPXMAX(vp9_get_qindex(&cm->seg, CR_SEGMENT_ID_BOOST1, cm->base_qindex),
7 * cm->base_qindex >> 3);
cm->base_qindex);
}
do {
int sum_map = 0;
int consec_zero_mv_thresh_block = consec_zero_mv_thresh;
// Get the mi_row/mi_col corresponding to superblock index i.
int sb_row_index = (i / sb_cols);
int sb_col_index = i - sb_row_index * sb_cols;
@ -403,6 +404,9 @@ static void cyclic_refresh_update_map(VP9_COMP *const cpi) {
VPXMIN(cm->mi_cols - mi_col, num_8x8_blocks_wide_lookup[BLOCK_64X64]);
ymis =
VPXMIN(cm->mi_rows - mi_row, num_8x8_blocks_high_lookup[BLOCK_64X64]);
if (cpi->noise_estimate.enabled && cpi->noise_estimate.level >= kMedium &&
(xmis <= 2 || ymis <= 2))
consec_zero_mv_thresh_block = 10;
for (y = 0; y < ymis; y++) {
for (x = 0; x < xmis; x++) {
const int bl_index2 = bl_index + y * cm->mi_cols + x;
@ -412,7 +416,7 @@ static void cyclic_refresh_update_map(VP9_COMP *const cpi) {
if (cr->map[bl_index2] == 0) {
count_tot++;
if (cr->last_coded_q_map[bl_index2] > qindex_thresh ||
cpi->consec_zero_mv[bl_index2] < consec_zero_mv_thresh) {
cpi->consec_zero_mv[bl_index2] < consec_zero_mv_thresh_block) {
sum_map++;
count_sel++;
}