Aforge使用多个摄像头的视频卡 [英] Aforge working with video card with multiple cameras

问题描述

我可以让Aforge使用USB网络摄像头，但我有一个可以连接到多个摄像头的视频卡。如何让Aforge使用视频卡？

我的问题是我无法获得视频输入设备设置为正常的视频输入。

代码如下：

  void init（）{
 FilterInfoCollection videoCaptureDevice = new FilterInfoCollection（FilterCategory.VideoInputDevice）; 
 
 VideoCaptureDevice finalVideo = new VideoCaptureDevice（videoCaptureDevice [0] .MonikerString）; 
 
 finalVideo.NewFrame + = new NewFrameEventHandler（finalVideo_NewFrame）; 
 
 finalVideo.Start（）; 
} 
 
 public void finalVideo_NewFrame（object sender，NewFrameEventArgs eventArgs）
 {
 Bitmap temp =（Bitmap）eventArgs.Frame.Clone 
 pictureBox1.Image = temp; 
 
} 
  

我也试过：

  finalVideo = new VideoCaptureDevice（）; 
 finalVideo.CrossbarVideoInput = VideoInput.Default; 
  

也无效。

$ p

$

VideoCaptureDevice finalVideo = new VideoCaptureDevice（videoCaptureDevice [0] .MonikerString）;

注册第一个设备[0]

也请注意这一行

  finalVideo.NewFrame + = new NewFrameEventHandler（finalVideo_NewFrame）; 
 

你定义什么事件名称（finalvide_Newframe）应该触发，当有一个新的图像帧接收到专用摄像机。最简单的是注册两个不同的事件。所以每个摄像机[0]和[1]接收它自己的事件来显示它。

这里一些额外的代码提示可能对你有用相机，它只是一个想法，如果你有多个外部相机（使2组合框），但不想使用例如笔记本电脑内部凸轮。

  VideoCaptureDevices = new FilterInfoCollection（FilterCategory.VideoInputDevice）; 
 
 foreach（VideoCaptureDevices中的FilterInfo VideoCaptureDevice）
 {
 comboBox1.Items.Add（VideoCaptureDevice.Name）; 
} //将所有设备放在组合框中; 
  

您可以这样做

  FinalVideo = new VideoCaptureDevice（VideoCaptureDevices [comboBox1.SelectedIndex] .MonikerString）; 
  

I can get Aforge to work with an USB web cam, but I have a video card that can connect to multiple cameras. How to I get Aforge to work with the video card ?

My issue is I could not get the videoinputdevice to set to a working video input.

The code is like this:

void init(){
    FilterInfoCollection videoCaptureDevice = new FilterInfoCollection(FilterCategory.VideoInputDevice);

    VideoCaptureDevice finalVideo = new VideoCaptureDevice(videoCaptureDevice[0].MonikerString);

    finalVideo.NewFrame += new NewFrameEventHandler(finalVideo_NewFrame);

    finalVideo.Start();
}

public void finalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
    Bitmap temp = (Bitmap)eventArgs.Frame.Clone();
    pictureBox1.Image = temp;

}

I also tried:

finalVideo = new VideoCaptureDevice();
        finalVideo.CrossbarVideoInput = VideoInput.Default;

and it did not work either.

Any help is highly appreciated.

解决方案

in your code

VideoCaptureDevice finalVideo = new VideoCaptureDevice(videoCaptureDevice[0].MonikerString);

registers the first device [0]
i asume if you would put in [1] there you get the second device.

also note this line

  finalVideo.NewFrame += new NewFrameEventHandler(finalVideo_NewFrame);

there you define what event name (finalvide_Newframe) should trigger when there is a new image frame received for that specific camera. Most simple would be to register two different events. So each camera [0] and [1] receives its own event to display it.

here some additional code hints that might be helpfull for you its what i use to select a camera, its just an idea for if you have multiple external camera's (make 2 combo boxes) but dont want to use for example a laptops internal cam.

VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            foreach (FilterInfo VideoCaptureDevice in VideoCaptureDevices)
            {
                comboBox1.Items.Add(VideoCaptureDevice.Name);
            } // to get all your devices inside a combo box;

with that you could do

 FinalVideo = new VideoCaptureDevice(VideoCaptureDevices[comboBox1.SelectedIndex].MonikerString);

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