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); } } }
private void EnumSources() { int sourceId = 0; this.Properties.CameraSourceIds.Add(-1); while (true) { try { using (Mat image = new Mat()) using (OpenCvSharp.VideoCapture videoCapture = new OpenCvSharp.VideoCapture(OpenCvSharp.CaptureDevice.Any, sourceId)) { if (videoCapture.IsOpened() && videoCapture.Read(image)) { this.Properties.CameraSourceIds.Add(sourceId++); } else { break; } } } catch { break; } } }
public OpencvSource(string cam_or_url) { MAssert.Check(cam_or_url != string.Empty); // check if cam_or_url is number bool stream = false; for (int i = 0; i < cam_or_url.Length; ++i) { stream = stream || (cam_or_url[i] < '0') || (cam_or_url[i] > '9'); } if (stream) { // open stream Console.WriteLine("opening stream '{0}'", cam_or_url); capturer = new OpenCvSharp.VideoCapture(cam_or_url); } else { // convert to integer int cam_id = Convert.ToInt32(cam_or_url, 10); MAssert.Check(cam_id >= 0, "wrong webcam id"); // open vebcam Console.WriteLine("opening webcam {0}", cam_id); capturer = new OpenCvSharp.VideoCapture(cam_id); MAssert.Check(capturer.IsOpened(), "webcam not opened"); // set resolution capturer.Set(OpenCvSharp.CaptureProperty.FrameWidth, 1280); capturer.Set(OpenCvSharp.CaptureProperty.FrameHeight, 720); MAssert.Check(capturer.IsOpened(), "webcam not opened"); } // sometimes first few frames can be empty even if camera is good // so skip few frames OpenCvSharp.Mat frame; for (int i = 0; i < 10; ++i) { frame = capturer.RetrieveMat(); } // check first two frames OpenCvSharp.Mat image1 = new OpenCvSharp.Mat(), image2 = new OpenCvSharp.Mat(); capturer.Read(image1); capturer.Read(image2); Console.WriteLine("image1 size: {0}", image1.Size()); Console.WriteLine("image1 size: {0}", image2.Size()); MAssert.Check( !image1.Empty() && !image2.Empty() && image1.Size() == image2.Size() && image1.Type() == OpenCvSharp.MatType.CV_8UC3 && image2.Type() == OpenCvSharp.MatType.CV_8UC3, "error opening webcam or stream"); }
private async Task CaptureCamera(CancellationToken token) { if (capture == null) { capture = new cv.VideoCapture(0, cv.VideoCaptureAPIs.ANY); } capture.Open(0); if (capture.IsOpened()) { try { while (!token.IsCancellationRequested) { using MemoryStream memoryStream = capture.RetrieveMat().ToMemoryStream(); await Application.Current.Dispatcher.InvokeAsync(() => { try { var imageSource = new BitmapImage(); imageSource.BeginInit(); imageSource.CacheOption = BitmapCacheOption.OnLoad; imageSource.StreamSource = memoryStream; imageSource.EndInit(); img_WebCam.Source = imageSource; }catch (Exception e) { } }); bitmapImage = new Bitmap(memoryStream); //await ParseWebCamFrame(bitmapImage, token); } capture.Release(); } catch (Exception e) { } } }
private async Task CaptureCamera(CancellationToken token) { if (capture == null) { capture = new OpenCvSharp.VideoCapture(CaptureDevice.DShow); } capture.Open(0); m_capture.Start(); if (capture.IsOpened()) // if(m_capture.IsOpened) { while (!token.IsCancellationRequested) { using MemoryStream memoryStream = capture.RetrieveMat().Flip(FlipMode.Y).ToMemoryStream(); // using MemoryStream memoryStream = m_capture.QueryFrame()..RetrieveMat().Flip(FlipMode.Y).ToMemoryStream(); await Application.Current.Dispatcher.InvokeAsync(() => { var imageSource = new BitmapImage(); imageSource.BeginInit(); imageSource.CacheOption = BitmapCacheOption.OnLoad; imageSource.StreamSource = memoryStream; imageSource.EndInit(); OpenCVSharpImageSource.Source = imageSource; }); var bitmapImage = new Bitmap(memoryStream); await ParseWebCamFrame(bitmapImage, token); } capture.Release(); } }