Web Cam QThread Display One Frame Image and not Continuous Video

[Peter_APIIT]

Hello to all, i need to develop an GUI window that capture video from web cam and display it to Qt main window but unfortunately it only display 1 frame image and not continuous video.



OpenCVQT::OpenCVQT(QWidget *parent, Qt::WFlags flags)
: QMainWindow(parent, flags)

{
ui.setupUi(this);

myLabel = new QLabel("Fuckasdasd");
mainLayout = new QVBoxLayout;

mainLayout->addWidget(myLabel);

mainWgt = new QWidget(this);

mainWgt->setLayout(mainLayout);
this->setCentralWidget(mainWgt);


camMenu = menuBar()->addMenu(tr("Web Camera"));
webCamAct = new QAction(tr("Start Web Camera"), this );
camMenu->addAction(webCamAct);
connect(webCamAct, SIGNAL(triggered()), this,
SLOT(WebCamSlot() ));

myCamThread = new cameraThread();

}
// =============================================
OpenCVQT::~OpenCVQT()
{
}
// =============================================
QLabel*& OpenCVQT::getLabel()
{
return myLabel;
}

void OpenCVQT::WebCamSlot()
{
myCamThread->run();
}

class cameraThread : public QThread
{
public:
cameraThread();
~cameraThread();

void run();
void StreamCamera();
void ConvertImage();
void CreateQImage();

private:
CvCapture* myCaptureHandler;
IplImage* myOriginalIplImage, *myRGBIplImage;

QImage myQImage;
uchar* ImageData;

};

cameraThread::cameraThread()
: myCaptureHandler(),
myOriginalIplImage(&IplImage() ),
myRGBIplImage(&IplImage() ),
myQImage(QImage()),
ImageData()
{
myCaptureHandler = cvCreateCameraCapture(0);
myOriginalIplImage = cvCreateImage(cvSize(320, 240),
IPL_DEPTH_8U, 3);

myRGBIplImage = cvCreateImage(cvSize(320,240),
IPL_DEPTH_8U, 3 );

}
// =============================================
cameraThread::~cameraThread()
{
}
// =============================================
void cameraThread::run()
{
StreamCamera();
exec();
}
// =============================================
void cameraThread::StreamCamera()
{
myOriginalIplImage = cvQueryFrame(myCaptureHandler);

ConvertImage();
CreateQImage();

//resize(myRGBIplImage->width, myRGBIplImage->height);
(OpenCVQT::myLabel)->setPixmap(QPixmap::fromImage(myQImage) );


}
// =============================================
void cameraThread::ConvertImage()
{
cvCvtColor(myOriginalIplImage,
myRGBIplImage, CV_BGR2RGB);

if (!myRGBIplImage)
{
QErrorMessage* errMsg = new QErrorMessage;
errMsg->showMessage("Error Convert Image");
}
else
{
ImageData = (uchar*) myRGBIplImage->imageData;
}

}
// =============================================
void cameraThread::CreateQImage()
{
myQImage = QImage(ImageData,
myRGBIplImage->width, myRGBIplImage->height,
myRGBIplImage->widthStep,
QImage::Format_RGB888);
}





void cameraThread::run()
{
StreamCamera();
exec();
}


I need the streamCamera() to be continuous running while main window is running too.

Please help.

Thanks.

[Peter_APIIT]

Please help.