| corner_match_avx2.c |
Compute mean and standard deviation of pixels in a window of size
MATCH_SZ by MATCH_SZ centered at (x, y).
Store results into *mean and *one_over_stddev
Note: The output of this function is scaled by MATCH_SZ, as in
mean = MATCH_SZ * <true mean> and
one_over_stddev = 1 / (MATCH_SZ * <true stddev>)
Combined with the fact that we return 1/stddev rather than the standard
deviation itself, this allows us to completely avoid divisions in
aom_compute_correlation, which is much hotter than this function is.
Returns true if this feature point is usable, false otherwise.
|
5442 |
| corner_match_sse4.c |
Compute mean and standard deviation of pixels in a window of size
MATCH_SZ by MATCH_SZ centered at (x, y).
Store results into *mean and *one_over_stddev
Note: The output of this function is scaled by MATCH_SZ, as in
mean = MATCH_SZ * <true mean> and
one_over_stddev = 1 / (MATCH_SZ * <true stddev>)
Combined with the fact that we return 1/stddev rather than the standard
deviation itself, this allows us to completely avoid divisions in
aom_compute_correlation, which is much hotter than this function is.
Returns true if this feature point is usable, false otherwise.
|
6054 |
| disflow_avx2.c |
|
18781 |
| disflow_sse4.c |
|
17224 |