Hi, So far I've been successful in showing the first captured frame using OpenCV, in OSG.
Code: // 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 (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? Code: 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 ------------------ Post generated by Mail2Forum ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=48007#48007 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
