Hi Praveena, You say the program crashes but provide absolutely no guidance on where and when it crashes. This gives us nothing to go on. Please use a debugger to get a stack trace of where it is crashing and then pass on this info.
Robert. On 4 June 2012 06:52, Praveena Sarathchandra <[email protected]> wrote: > Hi, > > So far I've been successful in showing the first captured frame using > OpenCV, in OSG. > >> // IplImage* cvImg is the webcam output image captured using >> cvQueryFrame(capture) >> osg::ref_ptr<osg::Image> osgImage = new osg::Image; >> osgImage->setImage(cvImg->width,cvImg->height, 3, >> GL_RGB, GL_RGB, GL_UNSIGNED_BYTE, >> (BYTE*)(cvImg->imageData), >> osg::Image::AllocationMode::NO_DELETE,1); > > >> >> osg::ImageStream* imageStream = dynamic_cast<osg::ImageStream*>( >> osgImage.get() ); >> if( imageStream ) imageStream->play(); > > >> >> osg::ref_ptr<osg::Texture2D> texture = new osg::Texture2D; >> texture->setImage( osgImage.get() ); > > >> >> osg::ref_ptr<osg::Drawable> quad = osg::createTexturedQuadGeometry( >> osg::Vec3(), osg::Vec3(1.0f, 0.0f, 0.0f), osg::Vec3(0.0f, 0.0f, >> 1.0f) ); >> quad->getOrCreateStateSet()->setTextureAttributeAndModes(0,texture.get() >> ); > > >> >> osg::ref_ptr<osg::Geode> geode = new osg::Geode; >> geode->addDrawable( quad.get() ); > > > > But I want the entire webcam stream in OSG, after preprocessing in OpenCV. > After googling I found this answer as a guide: > http://markmail.org/message/txqiv4plykf3bm3r#query:+page:1+mid:txqiv4plykf3bm3r+state:results > > According to that I made my Camera class inherit from osg::ImageStream and > called dirty() whenever a new frame is captured. But when I run the program > it crashes! How can I get this to work? > >> class Camera : public QObject, public osg::ImageStream >> { >> Q_OBJECT >> public: >> Camera(); >> ~Camera(); >> IplImage* getFrame(); >> private: >> CvCapture* capture; >> IplImage* frame; >> int timerId; >> public slots: >> void timerEvent(QTimerEvent *); >> private slots: >> void initialize(); >> }; > > >> Camera::Camera() : QObject(), osg::ImageStream() >> { >> capture = cvCreateCameraCapture(0); >> frame = cvQueryFrame(capture); >> QTimer::singleShot(0,this,SLOT(initialize())); >> } >> >> void Camera::initialize(){ >> frame = cvQueryFrame(capture); >> timerId = startTimer(10); >> } >> void Camera::timerEvent(QTimerEvent *){ >> frame = cvQueryFrame(capture); >> >> dirty(); >> } > > > Thanks > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
