C#利用NI VAS采集图片

软件环境

Vision Acquisition Software:该软件为NI视觉采集集成环境

1. 新建C#工程
2. 添加引用(位于’C:\Program Files (x86)\National Instruments\MeasurementStudioVS2008\DotNET\Assemblies\Current’文件夹下)

• NationalInstruments.Common
• NationalInstruments.Vision.Common
• NationalInstruments.Vision.Aquisition.Imaqdx

3. 获得在线的所有相机

	ImaqdxCameraInformation[] cameraList = ImaqdxSystem.GetCamerInformation(true);

4. 打开所有相机

public bool OpenCameraDevice()
{
	try
	{
		List<ImaqdxSession> cameraSessionList = new List<ImaqdxSession>();
		foreach(var camera in cameraList)
		{
			cameraSessionList.Add(new ImaqdxSession(camera.Name));
			return true;
		}
	}
	catch()
	{
		return false;
	}
}

5. 关闭所有相机

public void CloseCameraDevice()
{
	foreach(ImaqdxSession session in cameraSessionList)
	{
		if(session != null)
			session.Close();
	}
}

6. 拍照及显示

public bool SnapPictureAndShow(int cameraIndex)
{
	VisionImage image = new VisionImage();
	try
	{
		cameraSessionList[cameraIndex].Snap(image);
		Algorithms.Copy(image, NI_ImageViewer.Image);
		return true;
	}
	catch()
	{
		return false;
	}
}