UDOO – OPENCV – C++ CODE TEST

GStreamer - OpenCV Plugins   Feature：  C++ , High speed processing

OPENCV – Draw Text

sobel edge detection

We Need download : GStreamer - OpenCV Plugins 
http://gstreamer.freedesktop.org/modules/gst-plugins-bad.html


 examples :

static char text[20];
static CvFont font1;

memset(text,0,sizeof(text));
cvInitFont(&font1, CV_FONT_HERSHEY_SIMPLEX, 2.2, 2.2, 0, 6, 8);
static GstFlowReturn
gst_cv_smooth_transform (GstOpencvBaseTransform * base, GstBuffer * buf,
    IplImage * img, GstBuffer * outbuf, IplImage * outimg)
{
  GstCvSmooth *filter = GST_CV_SMOOTH (base);
  cvSmooth (img, outimg, filter->type, filter->param1, filter->param2,
      filter->param3, filter->param4);
  sprintf(text,"UDOO-OpenCV Test: %d",ivv);
  cvPutText(outimg, text, cvPoint(100, 100), &font1, CV_RGB(255,0,0)); 
  return GST_FLOW_OK;
}

run_it.sh:

  export PKG_CONFIG_PATH=/usr/lib/pkgconfig
./autogen.sh
./congigure
sudo make clean
make
sudo make install
sudo cp ./src/.libs/libgstopencv.so /usr/lib/gstreamer-0.10/libgstopencv.so
sudo cp ./src/.libs/libgstopencv.la /usr/lib/gstreamer-0.10/libgstopencv.la
gst-inspect-0.10 opencv
gst-launch-0.10 mfw_v4lsrc ! 'video/x-raw-yuv,width=640,height=480,framerate=90/1' ! ffmpegcolorspace ! cvsmooth ! ffmpegcolorspace ! ximagesink