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Adjusting thresholds in mfqe post-processing

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Adjusts some of the qualification thresholds in mfqe to eliminate
artifacts due to wrong decisions. Besides, a new qualification
criteria is used to disable mfqe if the quality of the previous
frame is itself not too good.

Change-Id: I4097c20b7fd4fcc60cc3003c1e33e8faae2ff066
This commit is contained in:
Deb Mukherjee 2012-09-04 12:09:05 -07:00
parent 7e9a519fbb
commit c6fd0a5dd6
2 changed files with 4 additions and 3 deletions
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4
vp8/common/mfqe.c
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@ -185,8 +185,8 @@ static void multiframe_quality_enhance_block
actrisk = (actd > act * 5);
/* thr = qdiff/8 + log2(act) + log4(qprev) */
thr = (qdiff >> 3);
/* thr = qdiff/16 + log2(act) + log4(qprev) */
thr = (qdiff >> 4);
while (actd >>= 1) thr++;
while (qprev >>= 2) thr++;

3
vp8/common/postproc.c
View File

@ -742,7 +742,8 @@ int vp8_post_proc_frame(VP8_COMMON *oci, YV12_BUFFER_CONFIG *dest, vp8_ppflags_t
if ((flags & VP8D_MFQE) &&
oci->postproc_state.last_frame_valid &&
oci->current_video_frame >= 2 &&
oci->base_qindex - oci->postproc_state.last_base_qindex >= 10)
oci->postproc_state.last_base_qindex < 60 &&
oci->base_qindex - oci->postproc_state.last_base_qindex >= 20)
{
vp8_multiframe_quality_enhance(oci);
if (((flags & VP8D_DEBLOCK) || (flags & VP8D_DEMACROBLOCK)) &&