如何在Emgu CV中从网络摄像头获取视频流? [英] How to get video stream from webcam in emgu cv?
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问题描述
我在c#中使用emgu cv。
I'm using emgu cv in c#.
我需要知道如何从emgu cv中的网络摄像头(默认网络摄像头)中获取视频流? / p>
I need to know How I can get the video stream from my webcam(default webcam)in emgu cv?
推荐答案
您可以使用以下代码制作一个应用来捕获和显示视频流:
You can use the following code to make an app to capture and display video stream:
public class CameraCapture
{
private Capture capture; //takes images from camera as image frames
private bool captureInProgress;
private void ProcessFrame(object sender, EventArgs arg)
{
Image<Bgr, Byte> ImageFrame = capture.QueryFrame(); //line 1
CamImageBox.Image = ImageFrame; //line 2
}
private void Form1_Load(object sender, EventArgs e)
{
if (capture == null)
{
try
{
capture = new Capture();
}
catch (NullReferenceException excpt)
{
MessageBox.Show(excpt.Message);
}
}
if (capture != null)
{
if (captureInProgress)
{ //if camera is getting frames then stop the capture and set button Text
// "Start" for resuming capture
btnStart.Text = "Start!"; //
Application.Idle -= ProcessFrame;
}
else
{
//if camera is NOT getting frames then start the capture and set button
// Text to "Stop" for pausing capture
btnStart.Text = "Stop";
Application.Idle += ProcessFrame;
}
captureInProgress = !captureInProgress;
}
}
}
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