shithub: libvpx

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vp9-denoiser: Adjust usage of skin and consec_zeromv.

Change-Id: I250258fc70ec0fcf1b501708c5d4b84685cf882e

--- a/vp9/encoder/vp9_denoiser.c

+++ b/vp9/encoder/vp9_denoiser.c

@@ -195,7 +195,8 @@

                                                          PICK_MODE_CONTEXT *ctx,

                                                          int motion_magnitude,

                                                          int is_skin,

-                                                         int *zeromv_filter) {

+                                                         int *zeromv_filter,

+                                                         int consec_zeromv) {

   int mv_col, mv_row;

   int sse_diff = ctx->zeromv_sse - ctx->newmv_sse;

   MV_REFERENCE_FRAME frame;

@@ -212,7 +213,7 @@

   saved_mi = *mi;

-  if (is_skin && motion_magnitude > 0)

+  if (is_skin && (motion_magnitude > 0 || consec_zeromv < 4))

     return COPY_BLOCK;

   // If the best reference frame uses inter-prediction and there is enough of a

@@ -332,6 +333,7 @@

                                           mi_row, mi_col);

   struct buf_2d src = mb->plane[0].src;

   int is_skin = 0;

+  int consec_zeromv = 0;

   mv_col = ctx->best_sse_mv.as_mv.col;

   mv_row = ctx->best_sse_mv.as_mv.row;

   motion_magnitude = mv_row * mv_row + mv_col * mv_col;

@@ -343,7 +345,7 @@

     // If motion for current block is small/zero, compute consec_zeromv for

     // skin detection (early exit in skin detection is done for large

     // consec_zeromv when current block has small/zero motion).

-    int consec_zeromv = 0;

+    consec_zeromv = 0;

     if (motion_level == 0) {

       CYCLIC_REFRESH *const cr = cpi->cyclic_refresh;

       VP9_COMMON * const cm = &cpi->common;

@@ -361,8 +363,8 @@

           consec_zeromv = VPXMIN(cr->consec_zero_mv[bl_index], consec_zeromv);

           // No need to keep checking 8x8 blocks if any of the sub-blocks

           // has small consec_zeromv (since threshold for no_skin based on

-          // zero/small motion in skin detection is high, i.e, > 5).

-          if (consec_zeromv < 5) {

+          // zero/small motion in skin detection is high, i.e, > 4).

+          if (consec_zeromv < 4) {

             i = ymis;

             j = xmis;

           }

@@ -393,7 +395,8 @@

                                            mi_row, mi_col, ctx,

                                            motion_magnitude,

                                            is_skin,

-                                           &zeromv_filter);

+                                           &zeromv_filter,

+                                           consec_zeromv);

   if (decision == FILTER_BLOCK) {

     decision = vp9_denoiser_filter(src.buf, src.stride,