public void Empty()
{
using var umat1 = new UMat();
Assert.True(umat1.Empty());
using var umat2 = new UMat(1, 2, MatType.CV_32FC1);
Assert.False(umat2.Empty());
}
void doExecute(object param)
{
// Capture capture;
VideoCapture capture = VideoCapture.FromCamera(0, VideoCaptureAPIs.ANY);
UMat frame = new UMat();
/*
*
* var src = new Mat("lenna.png", ImreadModes.Grayscale);
* var dst = new Mat();
*
* Cv2.Canny(src, dst, 50, 200);
* using (new Window("src image", src))
* using (new Window("dst image", dst))
* {
* Cv2.WaitKey();
* }
*/
for (; ;)
{
if (!mStopCapture)
{
break;
}
_ = capture.Read(frame);
Bitmap bitmap = BitmapConverter.ToBitmap(frame.GetMat(AccessFlag.MASK));
if (frame.Empty())
{
// cerr << "Can't capture frame: " << i << std::endl;
break;
}
// OpenCV Trace macro for NEXT named region in the same C++ scope
// Previous "read" region will be marked complete on this line.
// Use this to eliminate unnecessary curly braces.
// process_frame(frame);
updateView(bitmap);
}
}