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Use 3 rows and cols of pixels for ref_mv scoring

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The commit changed to use 3 rows above and 3 cols from left for SAD
scoring for selecting the best reference motion vector. The change
helped std-hd set by >.2% on psnr/ssim metrics.

Change-Id: Ifad3b528d0b4b6e3c22518af789d76eff23c1520
This commit is contained in:
Yaowu Xu 2012-09-14 08:58:02 -07:00
parent e1210c6aed
commit 6d8538e508
2 changed files with 10 additions and 11 deletions
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13
vp8/common/findnearmv.c
View File

@ -225,10 +225,10 @@ void vp8_find_best_ref_mvs(MACROBLOCKD *xd,
best_mv->as_int = nearest->as_int = near->as_int = 0;
vpx_memset(sorted_mvs, 0, sizeof(sorted_mvs));
above_src = xd->dst.y_buffer - xd->dst.y_stride * 2;
left_src = xd->dst.y_buffer - 2;
above_ref = ref_y_buffer - ref_y_stride * 2;
left_ref = ref_y_buffer - 2;
above_src = xd->dst.y_buffer - xd->dst.y_stride * 3;
left_src = xd->dst.y_buffer - 3;
above_ref = ref_y_buffer - ref_y_stride * 3;
left_ref = ref_y_buffer - 3;
//for(i = 0; i < MAX_MV_REFS; ++i) {
// Limit search to the predicted best 4
@ -259,10 +259,10 @@ void vp8_find_best_ref_mvs(MACROBLOCKD *xd,
((this_mv.as_mv.col + 3) >> 3):((this_mv.as_mv.col + 4) >> 3);
offset = ref_y_stride * row_offset + col_offset;
sad = vp8_sad16x2_c(above_src, xd->dst.y_stride,
sad = vp8_sad16x3_c(above_src, xd->dst.y_stride,
above_ref + offset, ref_y_stride, INT_MAX);
sad += vp8_sad2x16_c(left_src, xd->dst.y_stride,
sad += vp8_sad3x16_c(left_src, xd->dst.y_stride,
left_ref + offset, ref_y_stride, INT_MAX);
// Add the entry to our list and then resort the list on score.
@ -281,7 +281,6 @@ void vp8_find_best_ref_mvs(MACROBLOCKD *xd,
}
}
// Set the best mv to the first entry in the sorted list
best_mv->as_int = sorted_mvs[0].as_int;

8
vp8/encoder/sad_c.c
View File

@ -98,21 +98,21 @@ unsigned int vp8_sad4x4_c(
}
#if CONFIG_NEWBESTREFMV
unsigned int vp8_sad2x16_c(
unsigned int vp8_sad3x16_c(
const unsigned char *src_ptr,
int src_stride,
const unsigned char *ref_ptr,
int ref_stride,
int max_sad){
return sad_mx_n_c(src_ptr, src_stride, ref_ptr, ref_stride, 2, 16);
return sad_mx_n_c(src_ptr, src_stride, ref_ptr, ref_stride, 3, 16);
}
unsigned int vp8_sad16x2_c(
unsigned int vp8_sad16x3_c(
const unsigned char *src_ptr,
int src_stride,
const unsigned char *ref_ptr,
int ref_stride,
int max_sad){
return sad_mx_n_c(src_ptr, src_stride, ref_ptr, ref_stride, 16, 2);
return sad_mx_n_c(src_ptr, src_stride, ref_ptr, ref_stride, 16, 3);
}
#endif