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cfdffdd Mar 28, 2018
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@es0m @vpisarev @sturkmen72 @alalek
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#if defined(__linux__) || defined(LINUX) || defined(__APPLE__) || defined(ANDROID) || (defined(_MSC_VER) && _MSC_VER>=1800)
#include <opencv2/imgproc.hpp> // Gaussian Blur
#include <opencv2/core.hpp> // Basic OpenCV structures (cv::Mat, Scalar)
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp> // OpenCV window I/O
#include <opencv2/features2d.hpp>
#include <opencv2/objdetect.hpp>
#include <stdio.h>
using namespace std;
using namespace cv;
const string WindowName = "Face Detection example";
class CascadeDetectorAdapter: public DetectionBasedTracker::IDetector
{
public:
CascadeDetectorAdapter(cv::Ptr<cv::CascadeClassifier> detector):
IDetector(),
Detector(detector)
{
CV_Assert(detector);
}
void detect(const cv::Mat &Image, std::vector<cv::Rect> &objects) CV_OVERRIDE
{
Detector->detectMultiScale(Image, objects, scaleFactor, minNeighbours, 0, minObjSize, maxObjSize);
}
virtual ~CascadeDetectorAdapter() CV_OVERRIDE
{}
private:
CascadeDetectorAdapter();
cv::Ptr<cv::CascadeClassifier> Detector;
};
int main(int , char** )
{
namedWindow(WindowName);
VideoCapture VideoStream(0);
if (!VideoStream.isOpened())
{
printf("Error: Cannot open video stream from camera\n");
return 1;
}
std::string cascadeFrontalfilename = "../../data/lbpcascades/lbpcascade_frontalface.xml";
cv::Ptr<cv::CascadeClassifier> cascade = makePtr<cv::CascadeClassifier>(cascadeFrontalfilename);
cv::Ptr<DetectionBasedTracker::IDetector> MainDetector = makePtr<CascadeDetectorAdapter>(cascade);
if ( cascade->empty() )
{
printf("Error: Cannot load %s\n", cascadeFrontalfilename.c_str());
return 2;
}
cascade = makePtr<cv::CascadeClassifier>(cascadeFrontalfilename);
cv::Ptr<DetectionBasedTracker::IDetector> TrackingDetector = makePtr<CascadeDetectorAdapter>(cascade);
if ( cascade->empty() )
{
printf("Error: Cannot load %s\n", cascadeFrontalfilename.c_str());
return 2;
}
DetectionBasedTracker::Parameters params;
DetectionBasedTracker Detector(MainDetector, TrackingDetector, params);
if (!Detector.run())
{
printf("Error: Detector initialization failed\n");
return 2;
}
Mat ReferenceFrame;
Mat GrayFrame;
vector<Rect> Faces;
do
{
VideoStream >> ReferenceFrame;
cvtColor(ReferenceFrame, GrayFrame, COLOR_BGR2GRAY);
Detector.process(GrayFrame);
Detector.getObjects(Faces);
for (size_t i = 0; i < Faces.size(); i++)
{
rectangle(ReferenceFrame, Faces[i], Scalar(0,255,0));
}
imshow(WindowName, ReferenceFrame);
} while (waitKey(30) < 0);
Detector.stop();
return 0;
}
#else
#include <stdio.h>
int main()
{
printf("This sample works for UNIX or ANDROID or Visual Studio 2013+ only\n");
return 0;
}
#endif