External denoiser based on noise estimation and moving object detection.
Improved the existing external denoiser in WebRTC: the filter strength
is adaptive based on the noise level of the whole frame and the moving
object detection result. The adaptive filter effectively removes the
artifacts in previous version, such as trailing and blockiness on moving
objects.
The external denoiser is off by default for now.
BUG=
Review URL: https://codereview.webrtc.org/1822333003
Cr-Commit-Position: refs/heads/master@{#12198}
diff --git a/webrtc/modules/video_processing/frame_preprocessor.cc b/webrtc/modules/video_processing/frame_preprocessor.cc
index d91cacf..fd0d0ef 100644
--- a/webrtc/modules/video_processing/frame_preprocessor.cc
+++ b/webrtc/modules/video_processing/frame_preprocessor.cc
@@ -22,6 +22,7 @@
spatial_resampler_ = new VPMSimpleSpatialResampler();
ca_ = new VPMContentAnalysis(true);
vd_ = new VPMVideoDecimator();
+ EnableDenosing(false);
}
VPMFramePreprocessor::~VPMFramePreprocessor() {
@@ -115,7 +116,8 @@
const VideoFrame* current_frame = &frame;
if (denoiser_) {
- denoiser_->DenoiseFrame(*current_frame, &denoised_frame_);
+ denoiser_->DenoiseFrame(*current_frame, &denoised_frame_,
+ &denoised_frame_prev_, 0);
current_frame = &denoised_frame_;
}