1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/* Copyright (c) 2012 Patrick Ruoff
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "ftnoir_tracker_pt.h"
#include <QHBoxLayout>
#include <cmath>
#include <QDebug>
#include <QFile>
#include <QCoreApplication>
#include "opentrack/camera-names.hpp"
//#define PT_PERF_LOG //log performance
//-----------------------------------------------------------------------------
Tracker_PT::Tracker_PT()
: mutex(QMutex::Recursive),
commands(0),
video_widget(NULL),
video_frame(NULL),
ever_success(false)
{
connect(s.b.get(), SIGNAL(saving()), this, SLOT(apply_settings()));
}
Tracker_PT::~Tracker_PT()
{
set_command(ABORT);
wait();
delete video_widget;
video_widget = NULL;
if (video_frame->layout()) delete video_frame->layout();
camera.stop();
}
void Tracker_PT::set_command(Command command)
{
//QMutexLocker lock(&mutex);
commands |= command;
}
void Tracker_PT::reset_command(Command command)
{
//QMutexLocker lock(&mutex);
commands &= ~command;
}
bool Tracker_PT::get_focal_length(float& ret)
{
QMutexLocker l(&camera_mtx);
CamInfo info;
const bool res = camera.get_info(info);
if (res)
{
static constexpr double pi = 3.14159265359;
const int w = info.res_x, h = info.res_y;
const double diag = sqrt(1. + h/(double)w * h/(double)w);
const double diag_fov = static_cast<int>(s.fov) * pi / 180.;
const double fov = 2.*atan(tan(diag_fov/2.0)/diag);
ret = .5 / tan(.5 * fov);
return true;
}
return false;
}
void Tracker_PT::run()
{
#ifdef PT_PERF_LOG
QFile log_file(QCoreApplication::applicationDirPath() + "/PointTrackerPerformance.txt");
if (!log_file.open(QIODevice::WriteOnly | QIODevice::Text)) return;
QTextStream log_stream(&log_file);
#endif
apply_settings();
while((commands & ABORT) == 0)
{
const double dt = time.elapsed() * 1e-9;
time.start();
cv::Mat frame;
bool new_frame;
{
QMutexLocker l(&camera_mtx);
new_frame = camera.get_frame(dt, &frame);
}
if (new_frame && !frame.empty())
{
QMutexLocker lock(&mutex);
std::vector<cv::Vec2f> points = point_extractor.extract_points(frame);
bool success = points.size() == PointModel::N_POINTS;
ever_success |= success;
float fx;
if (!get_focal_length(fx))
continue;
if (success)
{
point_tracker.track(points, PointModel(s), fx, s.dynamic_pose, s.init_phase_timeout);
}
{
Affine X_CM = pose();
Affine X_MH(cv::Matx33f::eye(), cv::Vec3f(s.t_MH_x, s.t_MH_y, s.t_MH_z)); // just copy pasted these lines from below
Affine X_GH = X_CM * X_MH;
cv::Vec3f p = X_GH.t; // head (center?) position in global space
cv::Vec2f p_(p[0] / p[2] * fx, p[1] / p[2] * fx); // projected to screen
points.push_back(p_);
}
for (unsigned i = 0; i < points.size(); i++)
{
auto& p = points[i];
auto p2 = cv::Point(p[0] * frame.cols + frame.cols/2, -p[1] * frame.cols + frame.rows/2);
cv::Scalar color(0, 255, 0);
if (i == points.size()-1)
color = cv::Scalar(0, 0, 255);
cv::line(frame,
cv::Point(p2.x - 20, p2.y),
cv::Point(p2.x + 20, p2.y),
color,
4);
cv::line(frame,
cv::Point(p2.x, p2.y - 20),
cv::Point(p2.x, p2.y + 20),
color,
4);
}
video_widget->update_image(frame);
}
#ifdef PT_PERF_LOG
log_stream<<"dt: "<<dt;
if (!frame.empty()) log_stream<<" fps: "<<camera.get_info().fps;
log_stream<<"\n";
#endif
}
qDebug()<<"Tracker:: Thread stopping";
}
void Tracker_PT::apply_settings()
{
qDebug()<<"Tracker:: Applying settings";
QMutexLocker l(&camera_mtx);
camera.stop();
camera.set_device_index(camera_name_to_index(s.camera_name));
camera.set_res(s.cam_res_x, s.cam_res_y);
camera.set_fps(s.cam_fps);
camera.start();
qDebug()<<"Tracker::apply ends";
}
void Tracker_PT::start_tracker(QFrame *parent_window)
{
this->video_frame = parent_window;
video_frame->setAttribute(Qt::WA_NativeWindow);
video_frame->show();
video_widget = new PTVideoWidget(video_frame);
QHBoxLayout* video_layout = new QHBoxLayout(parent_window);
video_layout->setContentsMargins(0, 0, 0, 0);
video_layout->addWidget(video_widget);
video_frame->setLayout(video_layout);
video_widget->resize(video_frame->width(), video_frame->height());
start();
}
void Tracker_PT::data(double *data)
{
if (ever_success)
{
Affine X_CM = pose();
Affine X_MH(cv::Matx33f::eye(), cv::Vec3f(s.t_MH_x, s.t_MH_y, s.t_MH_z));
Affine X_GH = X_CM * X_MH;
cv::Matx33f R = X_GH.R;
cv::Vec3f t = X_GH.t;
// translate rotation matrix from opengl (G) to roll-pitch-yaw (E) frame
// -z -> x, y -> z, x -> -y
cv::Matx33f R_EG(0, 0,-1,
-1, 0, 0,
0, 1, 0);
R = R_EG * R * R_EG.t();
// extract rotation angles
float alpha, beta, gamma;
beta = atan2( -R(2,0), sqrt(R(2,1)*R(2,1) + R(2,2)*R(2,2)) );
alpha = atan2( R(1,0), R(0,0));
gamma = atan2( R(2,1), R(2,2));
// extract rotation angles
data[Yaw] = rad2deg * alpha;
data[Pitch] = -rad2deg * beta;
data[Roll] = rad2deg * gamma;
// get translation(s)
data[TX] = t[0] / 10.0; // convert to cm
data[TY] = t[1] / 10.0;
data[TZ] = t[2] / 10.0;
}
}
#include "ftnoir_tracker_pt_dialog.h"
OPENTRACK_DECLARE_TRACKER(Tracker_PT, TrackerDialog_PT, TrackerDll)
|
