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
|
#include <opencv2/core/utility.hpp>
#include <opencv2/tracking.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
#include <cstring>
#include "samples_utility.hpp"
using namespace std;
using namespace cv;
static const char* keys =
{ "{@tracker_algorithm | | Tracker algorithm }"
"{@video_name | | video name }"
"{@start_frame |0| Start frame }"
"{@bounding_frame |0,0,0,0| Initial bounding frame}"};
static void help()
{
cout << "\nThis example shows the functionality of \"Long-term optical tracking API\""
"-- pause video [p] and draw a bounding box around the target to start the tracker\n"
"Example of <video_name> is in opencv_extra/testdata/cv/tracking/\n"
"Call:\n"
"./tracker <tracker_algorithm> <video_name> <start_frame> [<bounding_frame>]\n"
"tracker_algorithm can be: MIL, BOOSTING, MEDIANFLOW, TLD, KCF, GOTURN, MOSSE.\n"
<< endl;
cout << "\n\nHot keys: \n"
"\tq - quit the program\n"
"\tp - pause video\n";
}
int main( int argc, char** argv ){
CommandLineParser parser( argc, argv, keys );
String tracker_algorithm = parser.get<String>( 0 );
String video_name = parser.get<String>( 1 );
int start_frame = parser.get<int>( 2 );
if( tracker_algorithm.empty() || video_name.empty() )
{
help();
return -1;
}
int coords[4]={0,0,0,0};
bool initBoxWasGivenInCommandLine=false;
{
String initBoundingBox=parser.get<String>(3);
for(size_t npos=0,pos=0,ctr=0;ctr<4;ctr++){
npos=initBoundingBox.find_first_of(',',pos);
if(npos==string::npos && ctr<3){
printf("bounding box should be given in format \"x1,y1,x2,y2\",where x's and y's are integer coordinates of opposed corners of bdd box\n");
printf("got: %s\n",initBoundingBox.substr(pos,string::npos).c_str());
printf("manual selection of bounding box will be employed\n");
break;
}
int num=atoi(initBoundingBox.substr(pos,(ctr==3)?(string::npos):(npos-pos)).c_str());
if(num<=0){
printf("bounding box should be given in format \"x1,y1,x2,y2\",where x's and y's are integer coordinates of opposed corners of bdd box\n");
printf("got: %s\n",initBoundingBox.substr(pos,npos-pos).c_str());
printf("manual selection of bounding box will be employed\n");
break;
}
coords[ctr]=num;
pos=npos+1;
}
if(coords[0]>0 && coords[1]>0 && coords[2]>0 && coords[3]>0){
initBoxWasGivenInCommandLine=true;
}
}
//open the capture
VideoCapture cap;
cap.open( video_name );
cap.set( CAP_PROP_POS_FRAMES, start_frame );
if( !cap.isOpened() )
{
help();
cout << "***Could not initialize capturing...***\n";
cout << "Current parameter's value: \n";
parser.printMessage();
return -1;
}
Mat frame;
namedWindow( "Tracking API", 1 );
Mat image;
Rect boundingBox;
bool paused = false;
//instantiates the specific Tracker
Ptr<Tracker> tracker = createTrackerByName(tracker_algorithm);
if (!tracker)
{
cout << "***Error in the instantiation of the tracker...***\n";
return -1;
}
//get the first frame
cap >> frame;
frame.copyTo( image );
if(initBoxWasGivenInCommandLine){
boundingBox.x = coords[0];
boundingBox.y = coords[1];
boundingBox.width = std::abs( coords[2] - coords[0] );
boundingBox.height = std::abs( coords[3]-coords[1]);
printf("bounding box with vertices (%d,%d) and (%d,%d) was given in command line\n",coords[0],coords[1],coords[2],coords[3]);
rectangle( image, boundingBox, Scalar( 255, 0, 0 ), 2, 1 );
}
else
boundingBox = selectROI("Tracking API", image);
imshow( "Tracking API", image );
bool initialized = false;
int frameCounter = 0;
int64 timeTotal = 0;
for ( ;; )
{
if( !paused )
{
if(initialized){
cap >> frame;
if(frame.empty()){
break;
}
frame.copyTo( image );
}
if( !initialized )
{
//initializes the tracker
tracker->init(frame, boundingBox);
initialized = true;
}
else if( initialized )
{
int64 frameTime = getTickCount();
//updates the tracker
if( tracker->update( frame, boundingBox ) )
{
rectangle( image, boundingBox, Scalar( 255, 0, 0 ), 2, 1 );
}
frameTime = getTickCount() - frameTime;
timeTotal += frameTime;
}
imshow( "Tracking API", image );
frameCounter++;
}
char c = (char) waitKey( 2 );
if( c == 'q' )
break;
if( c == 'p' )
paused = !paused;
}
double s = frameCounter / (timeTotal / getTickFrequency());
printf("FPS: %f\n", s);
return 0;
}
|
