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#include <iostream>
#include <string>
#include "opencv2/core.hpp"
#include "opencv2/core/ocl.hpp"
#include "opencv2/core/utility.hpp"
#include "opencv2/videoio.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/video.hpp"
using namespace std;
using namespace cv;
#define M_MOG2 2
#define M_KNN 3
int main(int argc, const char** argv)
{
CommandLineParser cmd(argc, argv,
"{ c camera | | use camera }"
"{ f file | ../data/vtest.avi | input video file }"
"{ t type | mog2 | method's type (knn, mog2) }"
"{ h help | | print help message }"
"{ m cpu_mode | false | press 'm' to switch OpenCL<->CPU}");
if (cmd.has("help"))
{
cout << "Usage : bgfg_segm [options]" << endl;
cout << "Available options:" << endl;
cmd.printMessage();
return EXIT_SUCCESS;
}
bool useCamera = cmd.has("camera");
string file = cmd.get<string>("file");
string method = cmd.get<string>("type");
if (method != "mog" && method != "mog2")
{
cerr << "Incorrect method" << endl;
return EXIT_FAILURE;
}
int m = method == "mog2" ? M_MOG2 : M_KNN;
VideoCapture cap;
if (useCamera)
cap.open(0);
else
cap.open(file);
if (!cap.isOpened())
{
cout << "can not open camera or video file" << endl;
return EXIT_FAILURE;
}
UMat frame, fgmask, fgimg;
cap >> frame;
fgimg.create(frame.size(), frame.type());
Ptr<BackgroundSubtractorKNN> knn = createBackgroundSubtractorKNN();
Ptr<BackgroundSubtractorMOG2> mog2 = createBackgroundSubtractorMOG2();
switch (m)
{
case M_KNN:
knn->apply(frame, fgmask);
break;
case M_MOG2:
mog2->apply(frame, fgmask);
break;
}
bool running=true;
for (;;)
{
if(!running)
break;
cap >> frame;
if (frame.empty())
break;
int64 start = getTickCount();
//update the model
switch (m)
{
case M_KNN:
knn->apply(frame, fgmask);
break;
case M_MOG2:
mog2->apply(frame, fgmask);
break;
}
double fps = getTickFrequency() / (getTickCount() - start);
std::cout << "FPS : " << fps << std::endl;
std::cout << fgimg.size() << std::endl;
fgimg.setTo(Scalar::all(0));
frame.copyTo(fgimg, fgmask);
imshow("image", frame);
imshow("foreground mask", fgmask);
imshow("foreground image", fgimg);
char key = (char)waitKey(30);
switch (key)
{
case 27:
running = false;
break;
case 'm':
case 'M':
ocl::setUseOpenCL(!ocl::useOpenCL());
cout << "Switched to " << (ocl::useOpenCL() ? "OpenCL enabled" : "CPU") << " mode\n";
break;
}
}
return EXIT_SUCCESS;
}
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