I'm using OpenCV with QT and trying to implement facial recognition but as soon as I include `` from the "contrib" branch, QT complains about `error: C2065: 'emit': undeclared identifier`. I've tried including `"qobjectdefs.h"` and `#define emit` at the top of the appropriate header file, but it does not work. Code:
**Header**
#ifndef FACEDETECTOR_H
#define FACEDETECTOR_H
#include
#include
#include
#include
#include
#include
#include
#include
#include
//This causes the error as soon as I uncomment it
#include
#include
class FaceDetector : public QObject {
Q_OBJECT
public:
FaceDetector(QObject *parent=0) : QObject(parent), processAll_(true) {}
void setProcessAll(bool all);
~FaceDetector();
signals:
void image_signal(const QImage&);
public slots:
void processFrame(const cv::Mat& frame);
void facecascade_filename(QString filename);
private:
QString facecascade_filename_;
QString eyecascade_filename_;
QBasicTimer timer_;
QVector m_CSVimages;
QVector m_CSVlabels;
cv::Mat frame_;
bool processAll_;
cv::CascadeClassifier faceCascade;
cv::CascadeClassifier eyeCascade;
//I need face.hpp for this:
//cv::Ptr m_faceModel;
void process(cv::Mat frame);
void loadFiles(const cv::String& faceCascadeFilename, const cv::String& eyesCascadeFilename);
static void loadCSV(const cv::String& filePath, QVector& images, QVector& labels, char separator = ';');
void queue(const cv::Mat & frame);
void timerEvent(QTimerEvent* ev);
static void matDeleter(void* mat);
};
#endif // FACEDETECTOR_H
**Implementation**
Other functions omitted for brevity
#include "faceDetector.h"
void FaceDetector::process(cv::Mat frame) {
cv::Mat grey_image;
cv::cvtColor(frame, grey_image, CV_BGR2GRAY);
cv::equalizeHist(grey_image, grey_image);
std::vector faces;
// Calculate the camera size and set the size to 1/8 of screen height
faceCascade.detectMultiScale(grey_image, faces, 1.1, 8, 0|CV_HAAR_SCALE_IMAGE, cv::Size(frame.cols/4, frame.rows/4)); // Minimum size of obj
//-- Draw rectangles around faces
for( size_t i = 0; i < faces.size(); i++) {
cv::rectangle(frame, faces[i], cv::Scalar( 255, 0, 255 ));
}
cv::cvtColor(frame, frame, cv::COLOR_BGR2RGB);
const QImage image(static_cast(frame.data), frame.cols, frame.rows, frame.step, QImage::Format_RGB888, &matDeleter, new cv::Mat(frame));
image.rgbSwapped();
Q_ASSERT(image.constBits() == frame.data);
//This is the error location
emit image_signal(image);
}
↧