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++;
}
}
}
}
private void timer1_tick(object sender, EventArgs e)
{
tick_count++;
var dstMat = new Mat();
var frame = _capture.QueryFrame();
CvInvoke.Resize(frame, dstMat, new Size(640, 480), interpolation: Inter.Cubic);
Image <Bgr, Byte> currentframe = dstMat.ToImage <Bgr, byte>();
if (tick_count == 1 || tick_count > 5)
{
detectFace(currentframe);
if (tick_count != 1)
{
tick_count = 0;
}
}
else
{
foreach (Rectangle faceFound in faceDetected)
{
currentframe.Draw(faceFound, new Bgr(Color.Cyan), 2);
}
imageBox1.Image = currentframe;
}
}
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);
}
// Update is called once per frame
void Update()
{
if (capture == null || cc == null)
{
return;
}
if (!useCamera)
{//seek to correct video frame
var vframe = (Time.time * videoCaptureFps) % videoFrameCount;
capture.SetCaptureProperty(Emgu.CV.CvEnum.CapProp.PosFrames, vframe);
}
using (Image <Bgr, byte> img = capture.QueryFrame().ToImage <Bgr, byte>())
{
imageSize = img.Size;
var faces = cc.DetectMultiScale(img, 1.1, 10);
foreach (Rectangle face in faces)
{
faceRectCenter = GetRectCenter(face);
DrawFaceMarkers(img, face);
}
if (texture is null)
{
texture = new Texture2D(img.Width, img.Height);
}
texture.LoadImage(img.ToJpegData());
if (imageBox != null && imageBox.isActiveAndEnabled)
{
imageBox.texture = texture;
}
}
playerData.EyePosition = FacePos;
}
private void GetFrame(object sender, EventArgs e)
{
Image <Bgr, Byte> frame = capt.QueryFrame().ToImage <Bgr, Byte>();
imageBox1.Image = frame;
if (sw)
{
if (!System.IO.Directory.Exists(System.IO.Path.Combine(Application.StartupPath, "Images")))
{
try
{
System.IO.Directory.CreateDirectory(System.IO.Path.Combine(Application.StartupPath, "Images"));
}
catch { }
}
var fn = System.IO.Path.Combine(Application.StartupPath, "Images",
DateTime.Now.Hour.ToString().PadLeft(2, '0')
+ DateTime.Now.Minute.ToString().PadLeft(2, '0')
+ DateTime.Now.Second.ToString().PadLeft(2, '0')
+ DateTime.Now.Millisecond.ToString() + ".jpg");
frame.Save(fn);
}
}
private void btn_detect_Click(object sender, EventArgs e)
{
camera = new Emgu.CV.VideoCapture();
camera.QueryFrame();
Application.Idle += new EventHandler(FrameProcedure);
}
public void showFrame()
{
if (this.InvokeRequired)
{
try
{
ShowFrameDelegate SD = new ShowFrameDelegate(showFrame);
this.BeginInvoke(SD);
}
catch { }
}
else
{
if (ext == ".jpg")
{
Emgu.CV.Mat matBefore = CvInvoke.Imread(Text_FilePath.Text);
Emgu.CV.Mat matAfter = CvInvoke.Imread(SaveFileName);
if (matBefore != null && matAfter != null)
{
// bitmap是GDI+的物件，所以使用一般釋放記憶體的方式(dispose)對於bitmap是無效的
// 要能夠成功的釋放GDI+物件所佔用的記憶體，必須要使用Windows GDI元件，才能有效的釋放掉bitmap所使用的記憶體
// 將Bitmap物件轉換為平台指標
IntPtr gdibitmapBefore = matBefore.Bitmap.GetHbitmap();
IntPtr gdibitmapAfter = matAfter.Bitmap.GetHbitmap();
// 將bitmap放入至PictureBox的Image屬性
File_Before.Image = Image.FromHbitmap(gdibitmapBefore);
File_After.Image = Image.FromHbitmap(gdibitmapAfter);
// 進行Bitmap資源的釋放
DeleteObject(gdibitmapBefore);
DeleteObject(gdibitmapAfter);
}
if (matBefore != null)
{
matBefore.Dispose();
}
if (matAfter != null)
{
matAfter.Dispose();
}
GC.Collect();
}
else if (FrameCount == 0 || State == (int)PlayState.PlayState_Play)
{
Emgu.CV.Mat matBefore = objVideoCapture_Before.QueryFrame();
Emgu.CV.Mat matAfter = objVideoCapture_After.QueryFrame();
if (matBefore != null && matAfter != null)
{
FrameCount = objVideoCapture_Before.GetCaptureProperty(Emgu.CV.CvEnum.CapProp.PosFrames);
// bitmap是GDI+的物件，所以使用一般釋放記憶體的方式(dispose)對於bitmap是無效的
// 要能夠成功的釋放GDI+物件所佔用的記憶體，必須要使用Windows GDI元件，才能有效的釋放掉bitmap所使用的記憶體
// 將Bitmap物件轉換為平台指標
IntPtr gdibitmapBefore = matBefore.Bitmap.GetHbitmap();
IntPtr gdibitmapAfter = matAfter.Bitmap.GetHbitmap();
// 將bitmap放入至PictureBox的Image屬性
File_Before.Image = Image.FromHbitmap(gdibitmapBefore);
File_After.Image = Image.FromHbitmap(gdibitmapAfter);
// 進行Bitmap資源的釋放
DeleteObject(gdibitmapBefore);
DeleteObject(gdibitmapAfter);
}
if (matBefore != null)
{
matBefore.Dispose();
}
if (matAfter != null)
{
matAfter.Dispose();
}
GC.Collect();
}
}
}
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 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 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();
}
}
