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Reduce sampling time for noise estimate.

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Change-Id: I46abd85e2187b8f4c2846416a23fab26d9b9f67d
This commit is contained in:
Marco 2015-11-13 08:09:17 -08:00
parent 006fd19246
commit 988fd77c1f
2 changed files with 4 additions and 3 deletions
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6
vp9/encoder/vp9_noise_estimate.c
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@ -36,6 +36,7 @@ void vp9_noise_estimate_init(NOISE_ESTIMATE *const ne,
} else if (width * height >= 1280 * 720) {
ne->thresh = 130;
}
ne->num_frames_estimate = 20;
}
int enable_noise_estimation(VP9_COMP *const cpi) {
@ -91,7 +92,6 @@ void vp9_update_noise_estimate(VP9_COMP *const cpi) {
unsigned int thresh_sum_diff = 100;
unsigned int thresh_sum_spatial = (200 * 200) << 8;
unsigned int thresh_spatial_var = (32 * 32) << 8;
int num_frames_estimate = 20;
int min_blocks_estimate = cm->mi_rows * cm->mi_cols >> 7;
// Estimate is between current source and last source.
YV12_BUFFER_CONFIG *last_source = cpi->Last_Source;
@ -216,9 +216,9 @@ void vp9_update_noise_estimate(VP9_COMP *const cpi) {
// Update noise estimate.
ne->value = (int)((15 * ne->value + avg_est) >> 4);
ne->count++;
if (ne->count == num_frames_estimate) {
if (ne->count == ne->num_frames_estimate) {
// Reset counter and check noise level condition.
num_frames_estimate = 40;
ne->num_frames_estimate = 30;
ne->count = 0;
if (ne->value > (ne->thresh << 1))
ne->level = kHigh;

1
vp9/encoder/vp9_noise_estimate.h
View File

@ -38,6 +38,7 @@ typedef struct noise_estimate {
int count;
int last_w;
int last_h;
int num_frames_estimate;
} NOISE_ESTIMATE;
struct VP9_COMP;