本文整理汇总了C#中Mat.Empty方法的典型用法代码示例。如果您正苦于以下问题：C# Mat.Empty方法的具体用法？C# Mat.Empty怎么用？C# Mat.Empty使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Mat的用法示例。
在下文中一共展示了Mat.Empty方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Run
public void Run()
{
var capture = new VideoCapture();
capture.Set(CaptureProperty.FrameWidth, 640);
capture.Set(CaptureProperty.FrameHeight, 480);
capture.Open(-1);
if (!capture.IsOpened())
throw new Exception("capture initialization failed");
var fs = FrameSource.CreateCameraSource(-1);
var sr = SuperResolution.CreateBTVL1();
sr.SetInput(fs);
using (var normalWindow = new Window("normal"))
using (var srWindow = new Window("super resolution"))
{
var normalFrame = new Mat();
var srFrame = new Mat();
while (true)
{
capture.Read(normalFrame);
sr.NextFrame(srFrame);
if (normalFrame.Empty() || srFrame.Empty())
break;
normalWindow.ShowImage(normalFrame);
srWindow.ShowImage(srFrame);
Cv2.WaitKey(100);
}
}
}示例2: Run
public void Run()
{
const string OutVideoFile = "out.avi";
// Opens MP4 file (ffmpeg is probably needed)
VideoCapture capture = new VideoCapture(FilePath.Bach);
// Read movie frames and write them to VideoWriter
Size dsize = new Size(640, 480);
using (VideoWriter writer = new VideoWriter(OutVideoFile, -1, capture.Fps, dsize))
{
Console.WriteLine("Converting each movie frames...");
Mat frame = new Mat();
while(true)
{
// Read image
capture.Read(frame);
if(frame.Empty())
break;
Console.CursorLeft = 0;
Console.Write("{0} / {1}", capture.PosFrames, capture.FrameCount);
// grayscale -> canny -> resize
Mat gray = new Mat();
Mat canny = new Mat();
Mat dst = new Mat();
Cv2.CvtColor(frame, gray, ColorConversion.BgrToGray);
Cv2.Canny(gray, canny, 100, 180);
Cv2.Resize(canny, dst, dsize, 0, 0, Interpolation.Linear);
// Write mat to VideoWriter
writer.Write(dst);
}
Console.WriteLine();
}
// Watch result movie
using (VideoCapture capture2 = new VideoCapture(OutVideoFile))
using (Window window = new Window("result"))
{
int sleepTime = (int)(1000 / capture.Fps);
Mat frame = new Mat();
while (true)
{
capture2.Read(frame);
if(frame.Empty())
break;
window.ShowImage(frame);
Cv2.WaitKey(sleepTime);
}
}
}示例3: CaptureCameraCallback
private void CaptureCameraCallback()
{
while (Window.WaitKey(10) < 0)
{
using (var image = new Mat())
{
cap.Read(image);
if (image.Empty())
break;
pictureBox1.Image = GetChannel(image).ToBitmap();
}
}
}示例4: Run
public void Run()
{
using (var capture = new VideoCapture(FilePath.Bach))
using (var mog = new BackgroundSubtractorMOG())
using (var windowSrc = new Window("src"))
using (var windowDst = new Window("dst"))
{
var frame = new Mat();
var fg = new Mat();
while (true)
{
capture.Read(frame);
if(frame.Empty())
break;
mog.Run(frame, fg, 0.01);
windowSrc.Image = frame;
windowDst.Image = fg;
Cv2.WaitKey(50);
}
}
}示例5: Run
public void Run()
{
// Opens MP4 file (ffmpeg is probably needed)
VideoCapture capture = new VideoCapture(FilePath.Movie.Bach);
int sleepTime = (int)Math.Round(1000 / capture.Fps);
using (Window window = new Window("capture"))
{
// Frame image buffer
Mat image = new Mat();
// When the movie playback reaches end, Mat.data becomes NULL.
while (true)
{
capture.Read(image); // same as cvQueryFrame
if(image.Empty())
break;
window.ShowImage(image);
Cv2.WaitKey(sleepTime);
}
}
}示例6: StartStreaming
public void StartStreaming()
{
var tFrame = new Mat();
var stopwatch = new Stopwatch();
stopwatch.Start();
while (true)
{
_capture.Read(tFrame);
if (tFrame.Empty())
break;
Cv2.Transpose(tFrame, tFrame);
Cv2.Flip(tFrame, _frame, FlipMode.X);
var fps = string.Format("FPS: {0:F1}", (double)1000 / stopwatch.ElapsedMilliseconds);
AppGlobals.Form.SetStreamFrame(_frame, fps);
stopwatch.Restart();
Thread.Sleep(10);
}
}示例7: PreviewCamera
public static List<Mat> PreviewCamera(bool savePictureMode)
{
// Opens a camera device
var capture = new VideoCapture(0);
if (!capture.IsOpened())
return null;
var returnedMat = new List<Mat>();
var frame = new Mat();
var returnedframe = new Mat();
while (true)
{
// Read image
capture.Read(frame);
if (frame.Empty())
return null;
Cv2.ImShow("Camera", frame);
var key = Cv2.WaitKey(30);
if (key == 27) //wait for esc key
{
Cv2.DestroyAllWindows();
return returnedMat;
}
if (key == 115) //wait for s
{
returnedframe = frame.Clone();
returnedMat.Add(returnedframe);
}
}
}