AForge-与多个摄像机一起使用视频卡 [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，但是我有一个视频卡可以连接到多个摄像机。如何让AForge与视频卡配合使用？

我的问题是我无法将 VideoInputDevice 插入设置为有效的视频输入。

代码如下：

  void init（）{
 FilterInfoCollection videoCaptureDevice = 
新FilterInfoCollection（FilterCategory.VideoInputDevice）; 
 
 VideoCaptureDevice finalVideo = 
新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; 
 
} 
  

我也尝试过：

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

，它也不起作用。

解决方案

在您的代码中

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

注册第一个设备[0] < br>
i假设如果您将[1]放到那里，则会得到第二个设备。

还请注意此行

  finalVideo.NewFrame + = new NewFrameEventHandler（finalVideo_NewFrame）; 
  

您可以定义在收到新的图像帧时应触发的事件名称（finalvide_Newframe）特定的相机。最简单的方法是注册两个不同的事件。因此，每个摄像机[0]和[1]都会收到自己的事件来显示它。

此处还有一些其他代码提示可能对您有所帮助，它是我用来选择的内容摄像机，这只是一个想法，如果您有多个外部摄像机（使2个组合框），但又不想使用例如笔记本电脑的内置摄像机。

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

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 do 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);

这篇关于AForge-与多个摄像机一起使用视频卡的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！