public static List <Mat> LoadVideo()
{
Emgu.CV.VideoCapture videoCapture;
List <Mat> framesFromVideo = new List <Mat>();
FileOp.LoadFromFile((s, path) =>
{
videoCapture = new Emgu.CV.VideoCapture(path);
while (true)
{
Mat mat = new Mat();
videoCapture.Read(mat);
if (mat == null || mat.Rows == 0)
{
return;
}
framesFromVideo.Add(mat);
for (int p = 0; p < 4; p++)
{
videoCapture.Read(mat);
}
}
});
return(framesFromVideo);
}
private bool LoadVideo()
{
String szExe = System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase;
m_szExeDir = new Uri(System.IO.Path.GetDirectoryName(szExe)).LocalPath;
m_szLeftVideo = Path.Combine(new string[] { m_szExeDir, "data", "left.mp4" });
m_szRightVideo = Path.Combine(new string[] { m_szExeDir, "data", "right.mp4" });
if (!File.Exists(m_szLeftVideo) || !File.Exists(m_szRightVideo))
{
return(false);
}
Emgu.CV.VideoCapture lCap = new Emgu.CV.VideoCapture(m_szLeftVideo);
Emgu.CV.VideoCapture rCap = new Emgu.CV.VideoCapture(m_szRightVideo);
if (!lCap.IsOpened || !rCap.IsOpened)
{
return(false);
}
m_imgLeft = lCap.QueryFrame();
m_imgRight = rCap.QueryFrame();
m_szLeftImg = new Size(m_imgLeft.Cols, m_imgLeft.Rows);
m_szRightImg = new Size(m_imgRight.Cols, m_imgRight.Rows);
lCap.Stop();
rCap.Stop();
//DrawLeftImage(ref m_imgLeft);
return(true);
}
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
if (m_capture == null)
{
m_capture = new Emgu.CV.VideoCapture();
}
using (Image <Bgr, byte> nextFrame = m_capture.QueryFrame().ToImage <Bgr, Byte>())
{
if (nextFrame != null)
{
Image <Gray, byte> grayframe = nextFrame.Convert <Gray, byte>();
TestImage1.Source = ToBitmapSource(nextFrame);
if (takeSnapshot)
{
nextFrame.Save(SnapshotLocation_textbox.Text + "\\image" + snapshotIndex.ToString().PadLeft(3, '0') + ".jpg");
takeSnapshot = !takeSnapshot;
snapshotIndex++;
}
}
}
}
public ImageCapture()
{
lock (ReadSettingsLocker)
{
capture = new VideoCapture(0);
thread = new Thread(new ParameterizedThreadStart(grab));
}
}
private void FrameProcedure(object sender, EventArgs e)
{
camera = new Emgu.CV.VideoCapture();
_Users.Add("");
//Frame = camera.QueryFrame().Resize(320,240,Emgu.CV.CvEnum.Inter.Cubic);
throw new NotImplementedException();
}
private void Capture_ImageGrabbed(object sender, EventArgs e)
{
capture = (sender as VideoCapture);
if (capture != null)
{
capture.Retrieve(currentFrame);
imagesCircQ.Enqueue(currentFrame);
areGetNewImage.Set();
}
}
public void UpdateCamera(int CameraNumber)
{
lock (ReadSettingsLocker)
{
if (this.CameraNumber != CameraNumber)
{
capture = new VideoCapture(CameraNumber);
}
}
}
private void EmguFaceDetector(string path)
{
if (capture == null)
{
capture = new Emgu.CV.VideoCapture(0);
}
capture.ImageGrabbed += Capture_ImageGrabbed;
capture.Start();
emguFaceClassifier = new Emgu.CV.CascadeClassifier(@"./haarcascade/haarcascade_frontalface_alt.xml");
}
public CameraCapture(int index, PictureBox imageBox, int width, int height, int interval = 10)
{
_frameImage = new Mat();
Interval = interval;
_imageBox = imageBox;
_camera = new Emgu.CV.VideoCapture(index);
//_camera.SetCaptureProperty(CAP_PROP.CV_CAP_PROP_FRAME_WIDTH, width);
//_camera.SetCaptureProperty(CAP_PROP.CV_CAP_PROP_FRAME_HEIGHT, height);
_refreshMethodInvoker = Refresh;
_refreshThread = new Thread(CallBack);
}
private void StartCaptureButton(object sender, EventArgs e)
{
start_capture.Enabled = false;
stop_capture.Enabled = true;
if (capture == null)
{
capture = new Emgu.CV.VideoCapture(0);
}
capture.ImageGrabbed += ImageReceived;
capture.Start();
}
public void StartCamera()
{
capture = new Emgu.CV.VideoCapture();
/*
* capture.SetCaptureProperty(Emgu.CV.CvEnum.CAP_PROP.CV_CAP_PROP_AUTO_EXPOSURE, 0);
*
* capture.SetCaptureProperty(Emgu.CV.CvEnum.CAP_PROP.CV_CAP_PROP_BRIGHTNESS, 33);
* capture.SetCaptureProperty(Emgu.CV.CvEnum.CAP_PROP.CV_CAP_PROP_CONTRAST, 54);
* capture.SetCaptureProperty(Emgu.CV.CvEnum.CAP_PROP.CV_CAP_PROP_EXPOSURE, -7);
*/
}
// OnEnable is called just after the object is enabled
void OnEnable()
{
if (useCamera)
{
capture = new Emgu.CV.VideoCapture(cameraId);
}
else if (videoPath != "")
{
capture = new Emgu.CV.VideoCapture(videoPath);
videoFrameCount = (int)capture.GetCaptureProperty(Emgu.CV.CvEnum.CapProp.FrameCount);
videoCaptureFps = (int)capture.GetCaptureProperty(Emgu.CV.CvEnum.CapProp.Fps);
}
else
{
return;
}
cc = new CascadeClassifier(CASCADE_PATH);
}
public Form1()
{
facePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Desktop), "haarcascade_frontalface_default.xml");
face = new CascadeClassifier(facePath);
InitializeComponent();
CvInvoke.UseOpenCL = false;
try
{
_capture = new Emgu.CV.VideoCapture(1);
_capture.ImageGrabbed += ProcessFrame;
}
catch (NullReferenceException excpt)
{
MessageBox.Show(excpt.Message);
}
_frame = new Mat();
}
public CameraCapture()
{
InitializeComponent();
CvInvoke.UseOpenCL = false;
try
{
_capture = new VideoCapture();
_capture.ImageGrabbed += ProcessFrame;
}
catch (NullReferenceException excpt)
{
MessageBox.Show(excpt.Message);
}
_frame = new Mat();
_grayFrame = new Mat();
_smallGrayFrame = new Mat();
_smoothedGrayFrame = new Mat();
_cannyFrame = new Mat();
}
protected override void OnShown(EventArgs e)
{
try
{
if (capt == null)
{
capt = new Emgu.CV.VideoCapture();
}
}
catch (NullReferenceException excpt)
{
MessageBox.Show(excpt.Message);
}
if (capt != null)
{
Application.Idle += new EventHandler(GetFrame);
}
base.OnShown(e);
}
private void OpenFile(string fileName)
{
Mat imgOriginal = null;
try
{
imgOriginal = new Mat(fileName, ImreadModes.Color);
}
catch (Exception ex)
{
capture = new VideoCapture(fileName);
if (capture == null)
{
//lblTrackedColor.Text = "unable to open image, error: " + ex.Message;
return;
}
MaxFrames = Convert.ToInt32(capture.GetCaptureProperty(CapProp.FrameCount)) - 1;
ActFrame = 0;
capture.ImageGrabbed += Capture_ImageGrabbed;
capture.Start();
VideoState = VideoState.Running;
}
if (imgOriginal == null)
{
if (capture == null)
{
//lblTrackedColor.Text = "unable to open image";
return;
}
//imgOriginal = capture.QueryFrame();
}
else
{
ProcessFrame(imgOriginal);
}
UpdateUI();
}
private bool InitObjects()
{
bool bRes = false;
capture = new VideoCapture(0, VideoCapture.API.DShow);
if (capture.CaptureSource == VideoCapture.CaptureModuleType.Camera && capture.IsOpened)
{
capture.SetCaptureProperty(CapProp.FrameWidth, 640);
capture.SetCaptureProperty(CapProp.FrameHeight, 480);
capture.SetCaptureProperty(CapProp.Fps, SettingsHolder.Instance.FPS);
capture.ImageGrabbed += Capture_ImageGrabbed;
bRes = true;
}
else
{
bRes = false;
}
return(bRes);
}
private void btm_Start_Click(object sender, EventArgs e)
{
SF.Filter = "All files (*.*)|*.*";
if (SF.ShowDialog() == DialogResult.OK)
{
int Index = SF.FileName.IndexOf(".");
SaveFileName = (Index == -1 ? String.Concat(SF.FileName, ext) : String.Concat(SF.FileName.Substring(0, SF.FileName.IndexOf(".")), ext));
SF.Dispose();
if (ext == ".jpg")
{
btm_Play.Enabled = false;
btm_Pause.Enabled = false;
TSFaceDetection.TSFaceDetection tSFaceDetection = new TSFaceDetection.TSFaceDetection();
tSFaceDetection.FaceReduction(Text_FilePath.Text, "D:\\test.txt", SaveFileName);
showFrame();
}
else
{
btm_Play.Enabled = false;
btm_Pause.Enabled = false;
objVideoCapture = null;
objVideoCapture = new Emgu.CV.VideoCapture(Text_FilePath.Text);
TSFaceDetection.TSFaceDetection tSFaceDetection = new TSFaceDetection.TSFaceDetection();
tSFaceDetection.FaceReduction(Text_FilePath.Text, "D:\\test.txt", SaveFileName);
objVideoCapture_Before = new Emgu.CV.VideoCapture(Text_FilePath.Text);
objVideoCapture_After = new Emgu.CV.VideoCapture(SaveFileName);
FrameCount = 0;
objVideoCapture_Before.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.PosFrames, FrameCount);
objVideoCapture_After.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.PosFrames, FrameCount);
showFrame();
btm_Play.Enabled = true;
btm_Pause.Enabled = true;
}
}
}
public void Process()
{
Mat m = new Mat();
while (true)
{
if (_captureEnabled)
{
if (_capture == null)
_capture = new VideoCapture();
//Read the camera data to the mat
//Must use VideoCapture.Read function for UWP to read image from capture.
_capture.Read(m);
if (!m.IsEmpty)
{
//some simple image processing, let just invert the pixels
CvInvoke.BitwiseNot(m, m);
//The data in the mat that is read from the camera will
//be drawn to the Image control
CvInvoke.WinrtImshow();
}
}
else
{
if (_capture != null)
{
_capture.Dispose();
_capture = null;
}
Task t = Task.Delay(100);
t.Wait();
}
}
}
public void TestFileCaptureNonAscii()
{
String fileName = EmguAssert.GetFile("tree.avi");
String newName = fileName.Replace("tree.avi", "树.avi");
File.Copy(fileName, newName, true);
VideoCapture capture = new VideoCapture(EmguAssert.GetFile(newName));
int counter = 0;
using (Mat m = new Mat())
while (capture.Grab())
{
capture.Retrieve(m);
counter++;
}
Trace.WriteLine(String.Format("{0} frames found in file {1}", counter, newName));
}
private void btn_detect_Click(object sender, EventArgs e)
{
camera = new Emgu.CV.VideoCapture();
camera.QueryFrame();
Application.Idle += new EventHandler(FrameProcedure);
}
public void TestFileCapturePause()
{
int totalFrames1 = 0;
String fileName = EmguAssert.GetFile("tree.avi");
String fileName2 = fileName.Replace("tree.avi", "tree2.avi");
File.Copy(fileName, fileName2, true);
VideoCapture capture1 = new VideoCapture(fileName);
//capture one will continute capturing all the frames.
EventHandler captureHandle1 = delegate
{
Mat img = new Mat();
capture1.Retrieve(img);
totalFrames1++;
Trace.WriteLine(String.Format("capture 1 frame {0}: {1}", totalFrames1, DateTime.Now.ToString()));
};
capture1.ImageGrabbed += captureHandle1;
capture1.Start();
System.Threading.Thread.Sleep(2);
int totalFrames2 = 0;
VideoCapture capture2 = new VideoCapture(fileName2);
int counter = 0;
//capture 2 will capture 2 frames, pause for 1 seconds, then continute;
EventHandler captureHandle = delegate
{
counter++;
totalFrames2++;
bool needPause = (counter >= 2);
if (needPause)
{
capture2.Pause();
counter = 0;
}
Mat img = new Mat();
capture2.Retrieve(img);
Trace.WriteLine(String.Format("capture 2 frame {0}: {1}", totalFrames2, DateTime.Now.ToString()));
if (needPause)
{
System.Threading.ThreadPool.QueueUserWorkItem(delegate
{
Trace.WriteLine("Sleep for 1 sec");
System.Threading.Thread.Sleep(1000);
capture2.Start();
});
}
};
capture2.ImageGrabbed += captureHandle;
capture2.Start();
//int totalFrames = 69;
Stopwatch s = Stopwatch.StartNew();
while (! (totalFrames1 == totalFrames2))
{
System.Threading.Thread.Sleep(1000);
if (s.ElapsedMilliseconds > 120 * 1000)
{
EmguAssert.IsTrue(false, "Unable to finished reading frames in 2 mins");
break;
}
}
capture1.Dispose();
capture2.Dispose();
}
protected CaptureEmgu(VideoCapture capture)
{
_capture = capture;
}
/// <summary>
/// Create a Capture frame source
/// </summary>
/// <param name="capture">The capture object that will be converted to a FrameSource</param>
public CaptureFrameSource(VideoCapture capture)
{
_ptr = VideoStabInvoke.VideostabCaptureFrameSourceCreate(capture, ref FrameSourcePtr);
CaptureSource = capture.CaptureSource;
}
/*
public void TestCodeBookBGModel()
{
using (Capture capture = new Capture())
using (BGCodeBookModel<Bgr> model = new BGCodeBookModel<Bgr>())
{
ImageViewer viewer = new ImageViewer();
Image<Gray, byte> fgMask = capture.QueryFrame().Convert<Gray, Byte>();
Application.Idle += delegate(Object sender, EventArgs args)
{
Mat frame = capture.QueryFrame();
model.Apply(frame);
viewer.Image = model.ForegroundMask;
};
viewer.ShowDialog();
}
}
public void TestBlobTracking()
{
MCvFGDStatModelParams fgparam = new MCvFGDStatModelParams();
fgparam.alpha1 = 0.1f;
fgparam.alpha2 = 0.005f;
fgparam.alpha3 = 0.1f;
fgparam.delta = 2;
fgparam.is_obj_without_holes = 1;
fgparam.Lc = 32;
fgparam.Lcc = 16;
fgparam.minArea = 15;
fgparam.N1c = 15;
fgparam.N1cc = 25;
fgparam.N2c = 25;
fgparam.N2cc = 35;
fgparam.perform_morphing = 0;
fgparam.T = 0.9f;
BlobTrackerAutoParam<Bgr> param = new BlobTrackerAutoParam<Bgr>();
param.BlobDetector = new BlobDetector(Emgu.CV.CvEnum.BlobDetectorType.CC);
param.FGDetector = new FGDetector<Bgr>(Emgu.CV.CvEnum.ForgroundDetectorType.Fgd, fgparam);
param.BlobTracker = new BlobTracker(Emgu.CV.CvEnum.BLOBTRACKER_TYPE.MSFG);
param.FGTrainFrames = 10;
BlobTrackerAuto<Bgr> tracker = new BlobTrackerAuto<Bgr>(param);
//MCvFont font = new MCvFont(Emgu.CV.CvEnum.FontFace.HersheySimplex, 1.0, 1.0);
using(ImageViewer viewer = new ImageViewer())
using (Capture capture = new Capture())
{
capture.ImageGrabbed += delegate(object sender, EventArgs e)
{
tracker.Process(capture.RetrieveBgrFrame());
//Image<Bgr, Byte> img = capture.RetrieveBgrFrame();
Image<Bgr, Byte> img = tracker.ForegroundMask.Convert<Bgr, Byte>();
foreach (MCvBlob blob in tracker)
{
img.Draw((Rectangle)blob, new Bgr(255.0, 255.0, 255.0), 2);
img.Draw(blob.ID.ToString(), Point.Round(blob.Center), CvEnum.FontFace.HersheySimplex, 1.0, new Bgr(255.0, 255.0, 255.0));
}
viewer.Image = img;
};
capture.Start();
viewer.ShowDialog();
}
}*/
public void TestCvBlob()
{
//MCvFont font = new MCvFont(Emgu.CV.CvEnum.FontFace.HersheySimplex, 0.5, 0.5);
using (CvTracks tracks = new CvTracks())
using (ImageViewer viewer = new ImageViewer())
using (VideoCapture capture = new VideoCapture())
using (Mat fgMask = new Mat())
{
//BGStatModel<Bgr> bgModel = new BGStatModel<Bgr>(capture.QueryFrame(), Emgu.CV.CvEnum.BG_STAT_TYPE.GAUSSIAN_BG_MODEL);
BackgroundSubtractorMOG2 bgModel = new BackgroundSubtractorMOG2(0, 0, true);
//BackgroundSubstractorMOG bgModel = new BackgroundSubstractorMOG(0, 0, 0, 0);
capture.ImageGrabbed += delegate(object sender, EventArgs e)
{
Mat frame = new Mat();
capture.Retrieve(frame);
bgModel.Apply(frame, fgMask);
using (CvBlobDetector detector = new CvBlobDetector())
using (CvBlobs blobs = new CvBlobs())
{
detector.Detect(fgMask.ToImage<Gray, Byte>(), blobs);
blobs.FilterByArea(100, int.MaxValue);
tracks.Update(blobs, 20.0, 10, 0);
Image<Bgr, Byte> result = new Image<Bgr, byte>(frame.Size);
using (Image<Gray, Byte> blobMask = detector.DrawBlobsMask(blobs))
{
frame.CopyTo(result, blobMask);
}
//CvInvoke.cvCopy(frame, result, blobMask);
foreach (KeyValuePair<uint, CvTrack> pair in tracks)
{
if (pair.Value.Inactive == 0) //only draw the active tracks.
{
CvBlob b = blobs[pair.Value.BlobLabel];
Bgr color = detector.MeanColor(b, frame.ToImage<Bgr, Byte>());
result.Draw(pair.Key.ToString(), pair.Value.BoundingBox.Location, CvEnum.FontFace.HersheySimplex, 0.5, color);
result.Draw(pair.Value.BoundingBox, color, 2);
Point[] contour = b.GetContour();
result.Draw(contour, new Bgr(0, 0, 255), 1);
}
}
viewer.Image = frame.ToImage<Bgr, Byte>().ConcateVertical(fgMask.ToImage<Bgr, Byte>().ConcateHorizontal(result));
}
};
capture.Start();
viewer.ShowDialog();
}
}
/*
public void TestPyrLK()
{
const int MAX_CORNERS = 500;
Capture c = new Capture();
ImageViewer viewer = new ImageViewer();
Image<Gray, Byte> oldImage = null;
Image<Gray, Byte> currentImage = null;
Application.Idle += new EventHandler(delegate(object sender, EventArgs e)
{
if (oldImage == null)
{
oldImage = c.QueryGrayFrame();
}
currentImage = c.QueryGrayFrame();
Features2D.GFTTDetector detector = new Features2D.GFTTDetector(MAX_CORNERS, 0.05, 3, 3);
//PointF[] features = oldImage.GoodFeaturesToTrack(MAX_CORNERS, 0.05, 3.0, 3, false, 0.04)[0];
PointF[] shiftedFeatures;
Byte[] status;
float[] trackErrors;
CvInvoke.CalcOpticalFlowPyrLK(oldImage, currentImage, features, new Size(9, 9), 3, new MCvTermCriteria(20, 0.05),
out shiftedFeatures, out status, out trackErrors);
Image<Gray, Byte> displayImage = currentImage.Clone();
for (int i = 0; i < features.Length; i++)
displayImage.Draw(new LineSegment2DF(features[i], shiftedFeatures[i]), new Gray(), 2);
oldImage = currentImage;
viewer.Image = displayImage;
});
viewer.ShowDialog();
}*/
public void TestPyrLKGPU()
{
if (!CudaInvoke.HasCuda)
return;
const int MAX_CORNERS = 500;
VideoCapture c = new VideoCapture();
ImageViewer viewer = new ImageViewer();
GpuMat oldImage = null;
GpuMat currentImage = null;
using (CudaGoodFeaturesToTrackDetector detector = new CudaGoodFeaturesToTrackDetector(DepthType.Cv8U, 1, MAX_CORNERS, 0.05, 3.0, 3, false, 0.04))
using (CudaDensePyrLKOpticalFlow flow = new CudaDensePyrLKOpticalFlow(new Size(21, 21), 3, 30, false))
{
Application.Idle += new EventHandler(delegate(object sender, EventArgs e)
{
if (oldImage == null)
{
Mat bgrFrame = c.QueryFrame();
using (GpuMat oldBgrImage = new GpuMat(bgrFrame))
{
oldImage = new GpuMat();
CudaInvoke.CvtColor(oldBgrImage, oldImage, ColorConversion.Bgr2Gray);
}
}
using (Mat tmpFrame = c.QueryFrame())
using (GpuMat tmp = new GpuMat(tmpFrame))
{
currentImage = new GpuMat();
CudaInvoke.CvtColor(tmp, currentImage, ColorConversion.Bgr2Gray);
}
using (GpuMat f = new GpuMat())
using (GpuMat vertex = new GpuMat())
using (GpuMat colors = new GpuMat())
using(GpuMat corners = new GpuMat())
{
flow.Calc(oldImage, currentImage, f);
//CudaInvoke.CreateOpticalFlowNeedleMap(u, v, vertex, colors);
detector.Detect(oldImage, corners, null);
//GpuMat<float> detector.Detect(oldImage, null);
/*
//PointF[] features = oldImage.GoodFeaturesToTrack(MAX_CORNERS, 0.05, 3.0, 3, false, 0.04)[0];
PointF[] shiftedFeatures;
Byte[] status;
float[] trackErrors;
OpticalFlow.PyrLK(oldImage, currentImage, features, new Size(9, 9), 3, new MCvTermCriteria(20, 0.05),
out shiftedFeatures, out status, out trackErrors);
*/
Mat displayImage = new Mat();
currentImage.Download(displayImage);
/*
for (int i = 0; i < features.Length; i++)
displayImage.Draw(new LineSegment2DF(features[i], shiftedFeatures[i]), new Gray(), 2);
*/
oldImage = currentImage;
viewer.Image = displayImage;
}
});
viewer.ShowDialog();
}
}
/*
public void TestGpuVibe()
{
int warmUpFrames = 20;
GpuVibe<Gray> vibe = null;
Image<Gray, Byte> mask = null;
using (ImageViewer viewer = new ImageViewer()) //create an image viewer
using (Capture capture = new Capture()) //create a camera captue
{
capture.ImageGrabbed += delegate(object sender, EventArgs e)
{
//run this until application closed (close button click on image viewer)
using(Image<Bgr, byte> frame = capture.RetrieveBgrFrame(0))
using (CudaImage<Bgr, byte> gpuFrame = new CudaImage<Bgr, byte>(frame))
using (CudaImage<Gray, Byte> gpuGray = gpuFrame.Convert<Gray, Byte>())
{
if (warmUpFrames > 0)
{
warmUpFrames--;
return;
}
if (vibe == null)
{
vibe = new GpuVibe<Gray>(1234567, gpuGray, null);
return;
}
else
{
vibe.Apply(gpuGray, null);
if (mask == null)
mask = new Image<Gray, byte>(vibe.ForgroundMask.Size);
vibe.ForgroundMask.Download(mask);
viewer.Image = frame.ConcateHorizontal(mask.Convert<Bgr, Byte>()); //draw the image obtained from camera
}
}
};
capture.Start();
viewer.ShowDialog(); //show the image viewer
}
}
public void TestGpuBackgroundModel()
{
int warmUpFrames = 20;
int totalFrames = 0;
//CudaBackgroundSubtractorMOG2<Bgr> bgModel = null;
//CudaBackgroundSubtractorMOG<Bgr> bgModel = null;
CudaBackgroundSubtractorGMG<Bgr> bgModel = null;
//CudaBackgroundSubtractorFGD<Bgr> bgModel = null;
Image<Gray, Byte> mask = null;
using (ImageViewer viewer = new ImageViewer()) //create an image viewer
using (Capture capture = new Capture()) //create a camera captue
{
capture.ImageGrabbed += delegate(object sender, EventArgs e)
{
//run this until application closed (close button click on image viewer)
totalFrames++;
if (viewer != null && !viewer.IsDisposed)
{
if (viewer.InvokeRequired)
{
viewer.Invoke((Action)delegate { viewer.Text = String.Format("Processing {0}th frame.", totalFrames); });
}
else
{
viewer.Text = String.Format("Processing {0}th frame.", totalFrames);
}
}
using (Image<Bgr, byte> frame = capture.RetrieveBgrFrame(0))
using (CudaImage<Bgr, byte> gpuFrame = new CudaImage<Bgr, byte>(frame))
{
if (warmUpFrames > 0)
{
warmUpFrames--;
return;
}
if (bgModel == null)
{
//bgModel = new CudaBackgroundSubtractorMOG2<Bgr>(500, 16, true);
//bgModel = new CudaBackgroundSubtractorMOG<Bgr>(200, 5, 0.7, 0);
bgModel = new CudaBackgroundSubtractorGMG<Bgr>(120, 0.8);
bgModel.Apply(gpuFrame, -1.0f, null);
//bgModel = new CudaBackgroundSubtractorFGD<Bgr>(128, 15, 25, 64, 25, 40, true, 1, 0.1f, 0.005f, 0.1f, 2.0f, 0.9f, 15.0f);
//bgModel.Apply(gpuFrame, -1.0f);
return;
}
else
{
bgModel.Apply(gpuFrame, -1.0f, null);
//bgModel.Apply(gpuFrame, -1.0f);
if (mask == null)
mask = new Image<Gray, byte>(bgModel.ForgroundMask.Size);
bgModel.ForgroundMask.Download(mask);
Image<Bgr, Byte> result = frame.ConcateHorizontal(mask.Convert<Bgr, Byte>());
if (viewer != null && !viewer.IsDisposed)
{
if (viewer.InvokeRequired)
{
viewer.Invoke((Action)delegate { viewer.Image = result; });
}
else
{
viewer.Image = result; //draw the image obtained from camera
}
}
}
}
};
capture.Start();
viewer.ShowDialog(); //show the image viewer
}
}*/
public void CameraTest()
{
using (ImageViewer viewer = new ImageViewer()) //create an image viewer
using (VideoCapture capture = new VideoCapture()) //create a camera captue
{
capture.ImageGrabbed += delegate(object sender, EventArgs e)
{ //run this until application closed (close button click on image viewer)
Mat m = new Mat();
capture.Retrieve(m);
viewer.Image = m; //draw the image obtained from camera
};
capture.Start();
viewer.ShowDialog(); //show the image viewer
}
}
public static void TestCaptureFrameSource()
{
ImageViewer viewer = new ImageViewer();
using (VideoCapture capture = new VideoCapture())
using (CaptureFrameSource frameSource = new CaptureFrameSource(capture))
{
Application.Idle += delegate(object sender, EventArgs e)
{
Mat frame = frameSource.NextFrame();
if (frame != null)
viewer.Image = frame;
};
viewer.ShowDialog();
}
}
/*
public void CameraTest2()
{
using (ImageViewer viewer = new ImageViewer())
using (Capture capture = new Capture())
{
capture.ImageGrabbed += delegate(object sender, EventArgs e)
{
Image<Bgr, Byte> img = capture.RetrieveBgrFrame(0);
img = img.Resize(0.8, Emgu.CV.CvEnum.Inter.Linear);
Image<Gray, Byte> gray = img.Convert<Gray, Byte>();
gray._EqualizeHist();
viewer.Image = gray;
capture.Pause();
System.Threading.ThreadPool.QueueUserWorkItem(delegate
{
Thread.Sleep(1000);
capture.Start();
});
};
capture.Start();
viewer.ShowDialog();
}
}*/
public void CameraTest3()
{
ImageViewer viewer = new ImageViewer();
using (VideoCapture capture = new VideoCapture())
{
Application.Idle += delegate(object sender, EventArgs e)
{
Mat frame = capture.QueryFrame();
if (frame != null)
{
Bitmap bmp = frame.ToImage<Bgr, Byte>().ToBitmap();
viewer.Image = new Image<Bgr, Byte>(bmp);
}
};
viewer.ShowDialog();
}
}
/*
public static void TestOnePassVideoStabilizerCamera()
{
ImageViewer viewer = new ImageViewer();
using (Capture capture = new Capture())
using (GaussianMotionFilter motionFilter = new GaussianMotionFilter())
//using (Features2D.FastDetector detector = new Features2D.FastDetector(10, true))
using (Features2D.SURF detector = new Features2D.SURF(500, false))
//using (Features2D.ORBDetector detector = new Features2D.ORBDetector(500))
using (OnePassStabilizer stabilizer = new OnePassStabilizer(capture))
{
stabilizer.SetMotionFilter(motionFilter);
//motionEstimator.SetDetector(detector);
//stabilizer.SetMotionEstimator(motionEstimator);
Application.Idle += delegate(object sender, EventArgs e)
{
Image<Bgr, byte> frame = stabilizer.NextFrame();
if (frame != null)
viewer.Image = frame;
};
viewer.ShowDialog();
}
}*/
public static void TestOnePassVideoStabilizer()
{
ImageViewer viewer = new ImageViewer();
using (VideoCapture capture = new VideoCapture("tree.avi"))
using (CaptureFrameSource frameSource = new CaptureFrameSource(capture))
using (OnePassStabilizer stabilizer = new OnePassStabilizer(frameSource))
{
Stopwatch watch = new Stopwatch();
//stabilizer.SetMotionEstimator(motionEstimator);
Application.Idle += delegate(object sender, EventArgs e)
{
watch.Reset();
watch.Start();
Mat frame = stabilizer.NextFrame();
watch.Stop();
if (watch.ElapsedMilliseconds < 200)
{
Thread.Sleep(200 - (int)watch.ElapsedMilliseconds);
}
if (frame != null)
viewer.Image = frame;
};
viewer.ShowDialog();
}
}
public void TestCaptureFromFile()
{
using (VideoCapture capture = new VideoCapture(EmguAssert.GetFile( "tree.avi")))
using (VideoWriter writer = new VideoWriter("tree_invert.avi", 10, new Size(capture.Width, capture.Height), true))
{
int maxCount = 10;
Mat img = new Mat();
while (capture.Grab() && maxCount > 0)
{
capture.Retrieve(img);
CvInvoke.BitwiseNot(img, img);
writer.Write(img);
maxCount--;
}
}
}
public void TestPlayVideo()
{
VideoCapture capture = new VideoCapture("car.avi");
ImageViewer viewer = new ImageViewer(null);
Application.Idle += delegate(Object sender, EventArgs e)
{
Mat m = capture.QueryFrame();
if (m != null && !m.IsEmpty)
{
viewer.Image = m;
Thread.Sleep(300);
}
};
viewer.ShowDialog();
}
public void TestCapture()
{
VideoCapture capture = new VideoCapture("abc.efg");
Mat image = capture.QueryFrame();
}
public static void TestTwoPassVideoStabilizer()
{
ImageViewer viewer = new ImageViewer();
using (VideoCapture capture = new VideoCapture("tree.avi"))
using (GaussianMotionFilter motionFilter = new GaussianMotionFilter(15, -1.0f))
//using (Features2D.FastDetector detector = new Features2D.FastDetector(10, true))
//using (Features2D.SURF detector = new Features2D.SURF(500, false))
//using (Features2D.ORBDetector detector = new Features2D.ORBDetector(500))
using (CaptureFrameSource frameSource = new CaptureFrameSource(capture))
using (TwoPassStabilizer stabilizer = new TwoPassStabilizer(frameSource))
{
Stopwatch watch = new Stopwatch();
//stabilizer.SetMotionEstimator(motionEstimator);
Application.Idle += delegate(object sender, EventArgs e)
{
watch.Reset();
watch.Start();
Mat frame = stabilizer.NextFrame();
watch.Stop();
if (watch.ElapsedMilliseconds < 200)
{
Thread.Sleep(200 - (int) watch.ElapsedMilliseconds);
}
if (frame != null)
viewer.Image = frame;
};
viewer.ShowDialog();
}
}
public Form1()
{
InitializeComponent();
//try to create the capture
if (_capture == null)
{
try
{
_capture = new VideoCapture();
}
catch (NullReferenceException excpt)
{ //show errors if there is any
MessageBox.Show(excpt.Message);
}
}
if (_capture != null) //if camera capture has been successfully created
{
_motionHistory = new MotionHistory(
1.0, //in second, the duration of motion history you wants to keep
0.05, //in second, maxDelta for cvCalcMotionGradient
0.5); //in second, minDelta for cvCalcMotionGradient
_capture.ImageGrabbed += ProcessFrame;
_capture.Start();
}
}
public Form1()
{
InitializeComponent();
try
{
_capture = new VideoCapture();
_capture.ImageGrabbed += ProcessFrame;
}
catch (NullReferenceException excpt)
{
MessageBox.Show(excpt.Message);
}
UpdateMessage(String.Empty);
}
void Run()
{
try
{
_cameraCapture = new VideoCapture();
}
catch (Exception e)
{
MessageBox.Show(e.Message);
return;
}
_fgDetector = new Emgu.CV.VideoSurveillance.BackgroundSubtractorMOG2();
_blobDetector = new CvBlobDetector();
_tracker = new CvTracks();
Application.Idle += ProcessFrame;
}
