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VisageGazeTracker.h
1 //
3 // (c) Visage Technologies AB 2002 - 2023 All rights reserved.
4 //
5 // This file is part of visage|SDK(tm).
6 // Unauthorized copying of this file, via any medium is strictly prohibited.
7 //
8 // No warranty, explicit or implicit, provided.
9 //
10 // This is proprietary software. No part of this software may be used or
11 // reproduced in any form or by any means otherwise than in accordance with
12 // any written license granted by Visage Technologies AB.
13 //
15
16 #ifndef VISAGEGAZETRACKER_H
17 #define VISAGEGAZETRACKER_H
18
19 #include "ScreenSpaceGazeMapping.h"
20 #include "VisageGazeEstimation.h"
21 #include "TrackerGazeCalibrator.h"
22 #include "VisageTracker.h"
23 #include "GazeQualityCalculator.h"
24
25
26 #ifdef VISAGE_STATIC
27 #define VISAGE_GAZE_DECLSPEC
28 #else
29
30 #ifdef VISAGE_GAZE_EXPORTS
31 #define VISAGE_GAZE_DECLSPEC __declspec(dllexport)
32 #else
33 #define VISAGE_GAZE_DECLSPEC __declspec(dllimport)
34 #endif
35
36 #endif
37
38 namespace VisageSDK
39 {
44 const VISAGE_DECLSPEC char* getVisageSDKVersion(void);
45
114 class VISAGE_GAZE_DECLSPEC VisageGazeTracker : public VisageTracker
115 {
116 public:
117
124 VisageGazeTracker(const char* trackerConfigFile);
125
126 /* Constructor.
127 *
128 * @param oglInterface the TrackerOpenGLInterface object or NULL if not used.
129 * @param guiInterface the TrackerGUIInterface object or NULL if not used; in that case the tracker will only function in fully automatic mode. Semi-automatic modes require TrackerGUIInterface to be implemented.
130 * @param trackerConfigFile the name of the tracker configuration file (.cfg; default configuration files are provided in \if IOS_DOXY <a href="../../Samples/iOS/data">Samples/iOS/data</a> \elseif ANDROID_DOXY <a href="../../Samples/Android/data">Samples/Android/VisageTrackerUnityDemo/data</a>
131 * Constructor must be called with the full path to the configuration file. The configuration file is in the same directory as other data files needed by the tracker. Because it is in the same directory its path can be parsed to set the path for the other data files.
132 * \else Samples/OpenGL/data/FaceTracker2 \endif; for further details see <a href="../VisageTracker Configuration Manual.pdf">VisageTracker Configuration Manual</a>\if IOS_DOXY and section on <a href="../../doc/creatingxc.html#config_selection">device-specific configuration selection</a>.\endif).
133 * @see TrackerOpenGLInterface
134 * @see TrackerGUIInterface
135 */
136 //VisageGazeTracker(TrackerOpenGLInterface *oglInterface, TrackerGUIInterface *guiInterface, const char* trackerConfigFile);
137
140 ~VisageGazeTracker();
141
142
149 void InitOnlineGazeCalibration();
150
164 void AddGazeCalibrationPoint(float x, float y);
165
172 void FinalizeOnlineGazeCalibration();
173
185 void InitOfflineGazeCalibration(ScreenSpaceGazeRepository* calibrator);
186
200 float GetGazeEstimations(ScreenSpaceGazeRepository* repository/*, float* covariance = 0, float* headTranslation = 0, float* headRotation = 0, float* trackingPerc = 0*/);
201
202 virtual int* track(int frameWidth, int frameHeight, const char* p_imageData, FaceData* facedata, int format = VISAGE_FRAMEGRABBER_FMT_RGB, int origin = VISAGE_FRAMEGRABBER_ORIGIN_TL, int widthStep = 0, long timeStamp = -1, int maxFaces = 1);
203
204 void SetResolution(int width, int height);
205 void SetGazeViewportSize(int w, int h);
206 void SetGazeCenter(float x, float y);
207
208 ScreenSpaceGazeRepository* GetCalibrator();
209 bool IsRealTime();
210 bool IsCalibrated();
211
212 private:
213
214 FaceData* trackingData;
215 int trackStatus;
216
217 ScreenSpaceGazeRepository* estimations;
218 ScreenSpaceGazeRepository* calibrator;
219
220 GazeEstimationPredictor* lxpredictor;
221 GazeEstimationPredictor* rxpredictor;
222
223 GazeEstimationPredictor* lypredictor;
224 GazeEstimationPredictor* rypredictor;
225
226 bool isRealTime;
227 bool isCalibrated;
228 bool predicting;
229
230 void addOfflineScreenSpaceGazePoint();
231 void calculateOnlineScreenSpaceGaze();
232
233 ScreenSpaceGazeData Predict(EyeData& data);
234 void CalculateQuality(float& error_x, float& error_y);
235 void smoothGazeData();
236 void smoothGazeEstimations();
237
238 int frameIndex;
239
240 long lastTimestamp;
241
242 static int lew;
243 static int leh;
244 static int rew;
245 static int reh;
246
247 int width;
248 int height;
249
250 int nCalib;
251
252 float prev_x;
253 float prev_y;
254
255 float initGazeX;
256 float initGazeY;
257
258 float bestD[2];
259
260 int resolution[2];
261
262 float avgCalibHeadTranslation[3];
263 float avgCalibHeadRotation[3];
264
265 SessionQuality* sessionQuality;
266 SmoothingFilter *sf;
267 };
268 }
269 #endif
VisageSDK::VisageTracker
VisageTracker is a face tracker capable of tracking the head pose, facial features and gaze for multi...
Definition: VisageTracker.h:260
VisageSDK::ScreenSpaceGazeRepository
Data repository holding ScreenSpaceGazeData objects in offline screen space gaze tracking mode...
Definition: TrackerGazeCalibrator.h:239
VisageSDK::ScreenSpaceGazeData
ScreenSpaceGazeData is a container structure used to hold the gaze point location, current state of screen space gaze tracking system and gaze tracking estimation quality parameters for the current frame.
Definition: TrackerGazeCalibrator.h:180
VisageSDK::VisageGazeTracker
VisageGazeTracker extends VisageTracker functionality, adding screen space gaze tracking on top of fa...
Definition: VisageGazeTracker.h:114
VisageSDK::getVisageSDKVersion
const VISAGE_DECLSPEC char * getVisageSDKVersion(void)
Returns visageSDK version and revision number.
VisageSDK::FaceData
Face data structure, used as container for all face tracking and detection results.
Definition: FaceData.h:259