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Side by Side Diff: webrtc/modules/video_processing/util/noise_estimation.h

Issue 1822333003: External denoiser based on noise estimation and moving object detection. (Closed) Base URL: https://chromium.googlesource.com/external/webrtc.git@master
Patch Set: Created 4 years, 8 months ago
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1 /*
2 * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
3 *
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
9 */
10
11 #ifndef WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_NOISE_ESTIMATION_H_
12 #define WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_NOISE_ESTIMATION_H_
13
14 #include "webrtc/base/scoped_ptr.h"
15 #include "webrtc/modules/include/module_common_types.h"
16 #include "webrtc/modules/video_processing/include/video_processing_defines.h"
17 #include "webrtc/modules/video_processing/util/denoiser_filter.h"
18
19 namespace webrtc {
20
21 #define EXPERIMENTAL 0
22 #define DISPLAY 0
23
24 const int kNoiseThreshold = 200;
25 const int kNoiseThresholdNeon = 70;
26 const int kConsecLowVarFrame = 6;
27 const int kAverageLumaMin = 20;
28 const int kAverageLumaMax = 220;
29 const int kBlockSelectionVarMax = kNoiseThreshold << 1;
30
31 class NoiseEstimation {
32 public:
33 void Init(int width, int height, CpuType cpu_type);
34 void GetNoise(int mb_index, uint32_t var, uint32_t luma);
35 void ResetConsecLowVar(int mb_index);
36 void UpdateNoiseLevel();
37 // 0: low noise, 1: high noise
38 uint8_t GetNoiseLevel();
39
40 private:
41 int width_;
42 int height_;
43 int mb_rows_;
44 int mb_cols_;
45 CpuType cpu_type_;
46 uint32_t noise_var_;
47 double noise_var_accum_;
48 int num_noisy_block_;
49 int num_static_block_;
50 double percent_static_block_;
51 rtc::scoped_ptr<uint32_t[]> consec_low_var_;
52 };
53
54 } // namespace webrtc
55
56 #endif // WEBRTC_MODULES_VIDEO_PROCESSING_UTIL_NOISE_ESTIMATION_H_
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