/// <summary>
/// 基于OpenCv捕获视频流
/// </summary>
/// <param name="url"></param>
/// <param name="action"></param>
public void OpenCvCaptureVideoStream(string url, Action <OpenCvSharp.Mat> action)
{
using (OpenCvSharp.VideoCapture capture = new OpenCvSharp.VideoCapture(url))
{
//FourCC fourCC = FourCC.FromFourChars('m', 'p', '4', 'v');
if (!capture.IsOpened())
{
return;
}
//double fps = capture.Get(VideoCaptureProperties.Fps);
//double width = capture.Get(VideoCaptureProperties.FrameWidth);
//double height = capture.Get(VideoCaptureProperties.FrameHeight);
//OpenCvSharp.Size size = new OpenCvSharp.Size(width, height);
using OpenCvSharp.Mat frame = new OpenCvSharp.Mat();
while (_stopPlay == false)
{
if (capture.Read(frame))
{
//win?.ShowImage(frame);
action?.Invoke(frame);
}
}
frame.Dispose();
capture.Dispose();
}
}
private void button1_Click(object sender, EventArgs e)
{
DialogResult res = openFileDialog1.ShowDialog();
if (res == DialogResult.OK)
{
string ext = System.IO.Path.GetExtension(openFileDialog1.FileName);
if (ext.ToLower() == ".bmp" || ext.ToLower() == ".jpg" || ext.ToLower() == ".jpeg" || ext.ToLower() == ".png")
{
pictureBox1.Image = CreateImage(openFileDialog1.FileName);
}
if (ext.ToLower() == ".avi" || ext.ToLower() == ".mp4")
{
System.IO.Directory.SetCurrentDirectory(apppath);
System.IO.DirectoryInfo target = new System.IO.DirectoryInfo(@"main\LR\calendar");
foreach (System.IO.FileInfo file in target.GetFiles())
{
file.Delete();
}
int image_num = 1;
video = true;
OpenCvSharp.VideoCapture vcap = new OpenCvSharp.VideoCapture(openFileDialog1.FileName);
while (vcap.IsOpened())
{
if (stopping)
{
break;
}
OpenCvSharp.Mat mat = new OpenCvSharp.Mat();
if (vcap.Read(mat))
{
if (pictureBox1.Image != null)
{
pictureBox1.Image.Dispose();//Memory release
}
if (mat.IsContinuous())
{
pictureBox1.Image = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(mat);
//OpenCvSharp.Cv2.Resize(mat, mat, OpenCvSharp.Size(), 0, 0);
string filename = string.Format(@"main\LR\calendar\{0:D4}.png", image_num);
//pictureBox1.Image.Save(filename, System.Drawing.Imaging.ImageFormat.Png);
OpenCvSharp.Cv2.ImWrite(filename, mat, (int[])null);
image_num++;
//if (image_num > 10) break;
}
else
{
break;
}
Application.DoEvents(); // 非推奨
}
else
{
break;
}
System.Threading.Thread.Sleep((int)(1000 / vcap.Fps));
mat.Dispose();//Memory release
}
Fps = vcap.Fps;
vcap.Dispose();//Memory release
stopping = false;
pictureBox1.Image = CreateImage(@"main\LR\calendar\0001.png");
}
}
}
private void button1_Click(object sender, EventArgs e)
{
folder = "";
DialogResult res = openFileDialog1.ShowDialog();
if (res == DialogResult.OK)
{
label1.Text = "Image is loading";
label1.Refresh();
string ext = System.IO.Path.GetExtension(openFileDialog1.FileName);
if (ext.ToLower() == ".bmp" || ext.ToLower() == ".jpg" || ext.ToLower() == ".jpeg" || ext.ToLower() == ".png")
{
pictureBox1.Image = CreateImage(openFileDialog1.FileName);
}
if (ext.ToLower() == ".avi" || ext.ToLower() == ".mp4")
{
System.IO.Directory.SetCurrentDirectory(apppath);
System.IO.DirectoryInfo target = new System.IO.DirectoryInfo(@"main\tecoGAN\LR\calendar");
foreach (System.IO.FileInfo file in target.GetFiles())
{
file.Delete();
}
int image_num = 1;
video = true;
OpenCvSharp.VideoCapture vcap = new OpenCvSharp.VideoCapture(openFileDialog1.FileName);
while (vcap.IsOpened())
{
if (stopping)
{
break;
}
OpenCvSharp.Mat mat = new OpenCvSharp.Mat();
if (image_num % 9 == 0)
{
label1.Text = "";
label1.Refresh();
}
else
{
label1.Text = "Image is loading";
label1.Refresh();
}
if (vcap.Read(mat))
{
if (pictureBox1.Image != null)
{
pictureBox1.Image.Dispose();//Memory release
}
if (mat.IsContinuous())
{
pictureBox1.Image = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(mat);
{
//pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;
Bitmap bmp = new Bitmap(
pictureBox1.Image,
pictureBox1.Image.Width * 4,
pictureBox1.Image.Height * 4);
pictureBox1.Image = bmp;
}
if (!checkBox1.Checked)
{
OpenCvSharp.Cv2.Resize(mat, mat, new OpenCvSharp.Size((int)((float)mat.Width * (float)numericUpDown1.Value), (int)((float)mat.Height * (float)numericUpDown1.Value)), 0, 0);
}
else
{
OpenCvSharp.Cv2.Resize(mat, mat, new OpenCvSharp.Size((int)(0.5f + (float)mat.Width / (float)numericUpDown1.Value), (int)(0.5f + (float)mat.Height / (float)numericUpDown1.Value)), 0, 0);
}
string filename = string.Format(@"main\tecoGAN\LR\calendar\{0:D4}.png", image_num);
//pictureBox1.Image.Save(filename, System.Drawing.Imaging.ImageFormat.Png);
OpenCvSharp.Cv2.ImWrite(filename, mat, (int[])null);
image_num++;
//if (image_num > 10) break;
}
else
{
break;
}
Application.DoEvents(); // 非推奨
}
else
{
break;
}
System.Threading.Thread.Sleep((int)(1000 / vcap.Fps));
mat.Dispose();//Memory release
}
Fps = vcap.Fps;
vcap.Dispose();//Memory release
stopping = false;
pictureBox1.Image = CreateImage(@"main\tecoGAN\LR\calendar\0001.png");
}
label1.Text = "";
label1.Refresh();
MessageBox.Show("finished");
}
}
