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Merge "vp8: Add an aggressive denoising mode."

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This commit is contained in:
Marco Paniconi 2014-07-29 11:23:25 -07:00 committed by Gerrit Code Review
commit 1aa7a9dd2f
9 changed files with 136 additions and 17 deletions
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2
examples/vpx_temporal_svc_encoder.c
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@ -579,7 +579,7 @@ int main(int argc, char **argv) {
if (strncmp(encoder->name, "vp8", 3) == 0) {
vpx_codec_control(&codec, VP8E_SET_CPUUSED, -speed);
vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, kDenoiserOnYOnly);
vpx_codec_control(&codec, VP8E_SET_NOISE_SENSITIVITY, kDenoiserOnYOnly);
} else if (strncmp(encoder->name, "vp9", 3) == 0) {
vpx_codec_control(&codec, VP8E_SET_CPUUSED, speed);
vpx_codec_control(&codec, VP9E_SET_AQ_MODE, 3);

4
vp8/common/onyx.h
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@ -108,8 +108,8 @@ extern "C"
* For temporal denoiser: noise_sensitivity = 0 means off,
* noise_sensitivity = 1 means temporal denoiser on for Y channel only,
* noise_sensitivity = 2 means temporal denoiser on for all channels.
* noise_sensitivity = 3 will be used for aggressive mode in future.
* Temporal denoiser is enabled via the build option
* noise_sensitivity = 3 means aggressive denoising mode.
* Temporal denoiser is enabled via the configuration option:
* CONFIG_TEMPORAL_DENOISING.
* For spatial denoiser: noise_sensitivity controls the amount of
* pre-processing blur: noise_sensitivity = 0 means off.

50
vp8/encoder/denoising.c
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@ -8,6 +8,8 @@
* be found in the AUTHORS file in the root of the source tree.
*/
#include <limits.h>
#include "denoising.h"
#include "vp8/common/reconinter.h"
@ -333,12 +335,33 @@ int vp8_denoiser_filter_uv_c(unsigned char *mc_running_avg_uv,
return FILTER_BLOCK;
}
void vp8_denoiser_set_parameters(VP8_DENOISER *denoiser) {
if (!denoiser->aggressive_mode) {
denoiser->denoise_pars.scale_sse_thresh = 1;
denoiser->denoise_pars.scale_motion_thresh = 8;
denoiser->denoise_pars.scale_increase_filter = 0;
denoiser->denoise_pars.denoise_mv_bias = 95;
denoiser->denoise_pars.pickmode_mv_bias = 100;
denoiser->denoise_pars.qp_thresh = 0;
denoiser->denoise_pars.consec_zerolast = UINT_MAX;
} else {
denoiser->denoise_pars.scale_sse_thresh = 2;
denoiser->denoise_pars.scale_motion_thresh = 16;
denoiser->denoise_pars.scale_increase_filter = 1;
denoiser->denoise_pars.denoise_mv_bias = 60;
denoiser->denoise_pars.pickmode_mv_bias = 60;
denoiser->denoise_pars.qp_thresh = 100;
denoiser->denoise_pars.consec_zerolast = 10;
}
}
int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height,
int num_mb_rows, int num_mb_cols)
int num_mb_rows, int num_mb_cols, int mode)
{
int i;
assert(denoiser);
denoiser->num_mb_cols = num_mb_cols;
denoiser->aggressive_mode = mode;
for (i = 0; i < MAX_REF_FRAMES; i++)
{
@ -369,10 +392,11 @@ int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height,
denoiser->denoise_state = vpx_calloc((num_mb_rows * num_mb_cols), 1);
vpx_memset(denoiser->denoise_state, 0, (num_mb_rows * num_mb_cols));
vp8_denoiser_set_parameters(denoiser);
return 0;
}
void vp8_denoiser_free(VP8_DENOISER *denoiser)
{
int i;
@ -401,6 +425,7 @@ void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser,
{
int mv_row;
int mv_col;
unsigned int motion_threshold;
unsigned int motion_magnitude2;
unsigned int sse_thresh;
int sse_diff_thresh = 0;
@ -424,7 +449,7 @@ void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser,
MB_MODE_INFO *mbmi = &filter_xd->mode_info_context->mbmi;
int sse_diff = 0;
// Bias on zero motion vector sse.
int zero_bias = 95;
const int zero_bias = denoiser->denoise_pars.denoise_mv_bias;
zero_mv_sse = (unsigned int)((int64_t)zero_mv_sse * zero_bias / 100);
sse_diff = zero_mv_sse - best_sse;
@ -502,14 +527,19 @@ void vp8_denoiser_denoise_mb(VP8_DENOISER *denoiser,
mv_row = x->best_sse_mv.as_mv.row;
mv_col = x->best_sse_mv.as_mv.col;
motion_magnitude2 = mv_row * mv_row + mv_col * mv_col;
sse_thresh = SSE_THRESHOLD;
if (x->increase_denoising) sse_thresh = SSE_THRESHOLD_HIGH;
motion_threshold = denoiser->denoise_pars.scale_motion_thresh *
NOISE_MOTION_THRESHOLD;
if (best_sse > sse_thresh || motion_magnitude2
> 8 * NOISE_MOTION_THRESHOLD)
{
decision = COPY_BLOCK;
}
if (motion_magnitude2 <
denoiser->denoise_pars.scale_increase_filter * NOISE_MOTION_THRESHOLD)
x->increase_denoising = 1;
sse_thresh = denoiser->denoise_pars.scale_sse_thresh * SSE_THRESHOLD;
if (x->increase_denoising)
sse_thresh = denoiser->denoise_pars.scale_sse_thresh * SSE_THRESHOLD_HIGH;
if (best_sse > sse_thresh || motion_magnitude2 > motion_threshold)
decision = COPY_BLOCK;
if (decision == FILTER_BLOCK)
{

26
vp8/encoder/denoising.h
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@ -39,16 +39,40 @@ enum vp8_denoiser_filter_state {
kFilterNonZeroMV
};
typedef struct {
// Scale factor on sse threshold above which no denoising is done.
unsigned int scale_sse_thresh;
// Scale factor on motion magnitude threshold above which no
// denoising is done.
unsigned int scale_motion_thresh;
// Scale factor on motion magnitude below which we increase the strength of
// the temporal filter (in function vp8_denoiser_filter).
unsigned int scale_increase_filter;
// Scale factor to bias to ZEROMV for denoising.
unsigned int denoise_mv_bias;
// Scale factor to bias to ZEROMV for coding mode selection.
unsigned int pickmode_mv_bias;
// Quantizer threshold below which we use the segmentation map to switch off
// loop filter for blocks that have been coded as ZEROMV-LAST a certain number
// (consec_zerolast) of consecutive frames. Note that the delta-QP is set to
// 0 when segmentation map is used for shutting off loop filter.
unsigned int qp_thresh;
// Threshold for number of consecutive frames for blocks coded as ZEROMV-LAST.
unsigned int consec_zerolast;
} denoise_params;
typedef struct vp8_denoiser
{
YV12_BUFFER_CONFIG yv12_running_avg[MAX_REF_FRAMES];
YV12_BUFFER_CONFIG yv12_mc_running_avg;
unsigned char* denoise_state;
int num_mb_cols;
int aggressive_mode;
denoise_params denoise_pars;
} VP8_DENOISER;
int vp8_denoiser_allocate(VP8_DENOISER *denoiser, int width, int height,
int num_mb_rows, int num_mb_cols);
int num_mb_rows, int num_mb_cols, int mode);
void vp8_denoiser_free(VP8_DENOISER *denoiser);

13
vp8/encoder/encodeframe.c
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@ -522,6 +522,19 @@ void encode_mb_row(VP8_COMP *cpi,
}
#endif
// Keep track of how many (consecutive) times a block is coded
// as ZEROMV_LASTREF, for base layer frames.
// Reset to 0 if its coded as anything else.
if (cpi->current_layer == 0) {
if (xd->mode_info_context->mbmi.mode == ZEROMV &&
xd->mode_info_context->mbmi.ref_frame == LAST_FRAME) {
// Increment, check for wrap-around.
if (cpi->consec_zero_last[map_index+mb_col] < 255)
cpi->consec_zero_last[map_index+mb_col] += 1;
} else {
cpi->consec_zero_last[map_index+mb_col] = 0;
}
}
/* Special case code for cyclic refresh
* If cyclic update enabled then copy xd->mbmi.segment_id; (which

15
vp8/encoder/ethreading.c
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@ -206,6 +206,21 @@ THREAD_FUNCTION thread_encoding_proc(void *p_data)
}
#endif
// Keep track of how many (consecutive) times a block
// is coded as ZEROMV_LASTREF, for base layer frames.
// Reset to 0 if its coded as anything else.
if (cpi->current_layer == 0) {
if (xd->mode_info_context->mbmi.mode == ZEROMV &&
xd->mode_info_context->mbmi.ref_frame ==
LAST_FRAME) {
// Increment, check for wrap-around.
if (cpi->consec_zero_last[map_index+mb_col] < 255)
cpi->consec_zero_last[map_index+mb_col] +=
1;
} else {
cpi->consec_zero_last[map_index+mb_col] = 0;
}
}
/* Special case code for cyclic refresh
* If cyclic update enabled then copy

31
vp8/encoder/onyx_if.c
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@ -613,6 +613,24 @@ static void cyclic_background_refresh(VP8_COMP *cpi, int Q, int lf_adjustment)
while(block_count && i != cpi->cyclic_refresh_mode_index);
cpi->cyclic_refresh_mode_index = i;
#if CONFIG_TEMPORAL_DENOISING
if (cpi->denoiser.aggressive_mode != 0 &&
Q < cpi->denoiser.denoise_pars.qp_thresh) {
// Under aggressive denoising mode, use segmentation to turn off loop
// filter below some qp thresh. The loop filter is turned off for all
// blocks that have been encoded as ZEROMV LAST x frames in a row,
// where x is set by cpi->denoiser.denoise_pars.consec_zerolast.
// This is to avoid "dot" artifacts that can occur from repeated
// loop filtering on noisy input source.
cpi->cyclic_refresh_q = Q;
lf_adjustment = -MAX_LOOP_FILTER;
for (i = 0; i < mbs_in_frame; ++i) {
seg_map[i] = (cpi->consec_zero_last[i] >
cpi->denoiser.denoise_pars.consec_zerolast) ? 1 : 0;
}
}
#endif
}
/* Activate segmentation. */
@ -1752,7 +1770,8 @@ void vp8_change_config(VP8_COMP *cpi, VP8_CONFIG *oxcf)
int width = (cpi->oxcf.Width + 15) & ~15;
int height = (cpi->oxcf.Height + 15) & ~15;
vp8_denoiser_allocate(&cpi->denoiser, width, height,
cpi->common.mb_rows, cpi->common.mb_cols);
cm->mb_rows, cm->mb_cols,
((cpi->oxcf.noise_sensitivity == 3) ? 1 : 0));
}
}
#endif
@ -1896,6 +1915,9 @@ struct VP8_COMP* vp8_create_compressor(VP8_CONFIG *oxcf)
else
cpi->cyclic_refresh_map = (signed char *) NULL;
CHECK_MEM_ERROR(cpi->consec_zero_last,
vpx_calloc(cpi->common.mb_rows * cpi->common.mb_cols, 1));
#ifdef VP8_ENTROPY_STATS
init_context_counters();
#endif
@ -2416,6 +2438,7 @@ void vp8_remove_compressor(VP8_COMP **ptr)
vpx_free(cpi->mb.ss);
vpx_free(cpi->tok);
vpx_free(cpi->cyclic_refresh_map);
vpx_free(cpi->consec_zero_last);
vp8_remove_common(&cpi->common);
vpx_free(cpi);
@ -3478,6 +3501,9 @@ static void encode_frame_to_data_rate
{
cpi->mb.rd_thresh_mult[i] = 128;
}
// Reset the zero_last counter to 0 on key frame.
vpx_memset(cpi->consec_zero_last, 0, cm->mb_rows * cm->mb_cols);
}
#if 0
@ -3899,6 +3925,7 @@ static void encode_frame_to_data_rate
#endif
#ifdef OUTPUT_YUV_SRC
vp8_write_yuv_frame(yuv_file, cpi->Source);
#endif
@ -3994,6 +4021,8 @@ static void encode_frame_to_data_rate
else
disable_segmentation(cpi);
}
// Reset the consec_zero_last counter on key frame.
vpx_memset(cpi->consec_zero_last, 0, cm->mb_rows * cm->mb_cols);
vp8_set_quantizer(cpi, Q);
}

2
vp8/encoder/onyx_int.h
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@ -511,6 +511,8 @@ typedef struct VP8_COMP
int cyclic_refresh_mode_index;
int cyclic_refresh_q;
signed char *cyclic_refresh_map;
// Count on how many (consecutive) times a macroblock uses ZER0MV_LAST.
unsigned char *consec_zero_last;
// Frame counter for the temporal pattern. Counter is rest when the temporal
// layers are changed dynamically (run-time change).

10
vp8/encoder/pickinter.c
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@ -40,7 +40,6 @@ extern const MB_PREDICTION_MODE vp8_mode_order[MAX_MODES];
extern int vp8_cost_mv_ref(MB_PREDICTION_MODE m, const int near_mv_ref_ct[4]);
int vp8_skip_fractional_mv_step(MACROBLOCK *mb, BLOCK *b, BLOCKD *d,
int_mv *bestmv, int_mv *ref_mv,
int error_per_bit,
@ -694,6 +693,13 @@ void vp8_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
*/
calculate_zeromv_rd_adjustment(cpi, x, &rd_adjustment);
#if CONFIG_TEMPORAL_DENOISING
if (cpi->oxcf.noise_sensitivity) {
rd_adjustment = (int)(rd_adjustment *
cpi->denoiser.denoise_pars.pickmode_mv_bias / 100);
}
#endif
/* if we encode a new mv this is important
* find the best new motion vector
*/
@ -1168,7 +1174,7 @@ void vp8_pick_inter_mode(VP8_COMP *cpi, MACROBLOCK *x, int recon_yoffset,
#if CONFIG_TEMPORAL_DENOISING
if (cpi->oxcf.noise_sensitivity)
{
int uv_denoise = (cpi->oxcf.noise_sensitivity == 2) ? 1 : 0;
int uv_denoise = (cpi->oxcf.noise_sensitivity >= 2) ? 1 : 0;
int block_index = mb_row * cpi->common.mb_cols + mb_col;
if (x->best_sse_inter_mode == DC_PRED)
{