C# 获取海康相机

一、简介

由于工作关系，本人最近使用到了海康的网口及USB3.0接口的工业相机。现将相关内容进行整理记录。

二、开发环境

64位VS2013 +C#
Halcon12
海康MVS3.0.0

三、项目搭建

1、添加引用

引用海康相机动态库（MvCameraControl.Net.dll）
在VS项目文件中添加添加引用，如下图

引用MVS安装目录下MVS\Development\DotNet\MvCameraControl.Net.dll这个文件。

2、创建相机类

鼠标右键单击工程项目–添加–类，选择“类”，输入类的名称，例如Hikvision，点击右下角的“添加”。
在项目中使用海康相机时，为便于程序编写，可引入如下的命名空间：
using MvCamCtrl.NET;

1.创建需要用到的全局变量

public MyCamera myCamera;//相机对象
private MyCamera.MV_CC_DEVICE_INFO_LIST deviceList;//设备列表
private MyCamera.MV_CC_DEVICE_INFO deviceInfo;//设备对象
private string seriesStr;//接收相机序列号
private MyCamera.MVCC_INTVALUE stParam;//用于接收特定的参数
//为读取、保存图像创建的数组
UInt32 m_nBufSizeForDriver = 4096 * 3000;
byte[] m_pBufForDriver = new byte[4096 * 3000];
UInt32 m_nBufSizeForSaveImage = 4096 * 3000 * 3 + 3000;
byte[] m_pBufForSaveImage = new byte[4096 * 3000 * 3 + 3000];

创建相关函数
1.创建构造函数

//在构造函数中实例化设备列表对象
public Hikvision()
 {
     deviceList = new MyCamera.MV_CC_DEVICE_INFO_LIST();
 }

2.创建改变相机IP的函数

//成功返回0失败返回-1
//调用函数时可以传入需要改变的目标IP，如过没有传入则将相机IP设置为其所连接的网卡地址+1或-1
public int changeIP(string IP = "")
{
   try
   {
         //获取相机相关信息，例如相机所连接网卡的网址
          IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(deviceInfo.SpecialInfo.stGigEInfo, 0);
          MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_GIGE_DEVICE_INFO));
          IPAddress cameraIPAddress;
          string tempStr = "";
          if (IP.Trim().Equals("") || !(IPAddress.TryParse(IP, out cameraIPAddress)))
          {
               //当前网卡的IP地址
               UInt32 nNetIp1 = (gigeInfo.nNetExport & 0xFF000000) >> 24;
               UInt32 nNetIp2 = (gigeInfo.nNetExport & 0x00FF0000) >> 16;
               UInt32 nNetIp3 = (gigeInfo.nNetExport & 0x0000FF00) >> 8;
               UInt32 nNetIp4 = (gigeInfo.nNetExport & 0x000000FF);
               //根据网卡IP设定相机IP，如果网卡ip第四位小于252，则相机ip第四位+1，否则相机IP第四位-1
              UInt32 cameraIp1 = nNetIp1;
              UInt32 cameraIp2 = nNetIp2;
              UInt32 cameraIp3 = nNetIp3;
              UInt32 cameraIp4 = nNetIp4;
              if (nNetIp4 < 252)
              {
                    cameraIp4++;
              }
              else
              {
                     cameraIp4--;
              }
              tempStr = cameraIp1 + "." + cameraIp2 + "." + cameraIp3 + "." + cameraIp4;
          }
          else
          {
                tempStr = IP;
          }
          IPAddress.TryParse(tempStr, out cameraIPAddress);
          long cameraIP = IPAddress.NetworkToHostOrder(cameraIPAddress.Address);
          //设置相机掩码
          uint maskIp1 = (gigeInfo.nCurrentSubNetMask & 0xFF000000) >> 24;
          uint maskIp2 = (gigeInfo.nCurrentSubNetMask & 0x00FF0000) >> 16;
          uint maskIp3 = (gigeInfo.nCurrentSubNetMask & 0x0000FF00) >> 8;
          uint maskIp4 = (gigeInfo.nCurrentSubNetMask & 0x000000FF);
          IPAddress subMaskAddress;
          tempStr = maskIp1 + "." + maskIp2 + "." + maskIp3 + "." + maskIp4;
          IPAddress.TryParse(tempStr, out subMaskAddress);
          long maskIP = IPAddress.NetworkToHostOrder(subMaskAddress.Address);
          //设置网关
          uint gateIp1 = (gigeInfo.nDefultGateWay & 0xFF000000) >> 24;
          uint gateIp2 = (gigeInfo.nDefultGateWay & 0x00FF0000) >> 16;
          uint gateIp3 = (gigeInfo.nDefultGateWay & 0x0000FF00) >> 8;
          uint gateIp4 = (gigeInfo.nDefultGateWay & 0x000000FF);
          IPAddress gateAddress;
          tempStr = gateIp1 + "." + gateIp2 + "." + gateIp3 + "." + gateIp4;
          IPAddress.TryParse(tempStr, out gateAddress);
          long gateIP = IPAddress.NetworkToHostOrder(gateAddress.Address);

          int temp = myCamera.MV_GIGE_ForceIpEx_NET((UInt32)(cameraIP >> 32), (UInt32)(maskIP >> 32), (UInt32)(gateIP >> 32));//执行更改相机IP的命令
          if (temp == 0)
                //强制IP成功
                return 0;
          //强制IP失败
          return -1;
     }
     catch
     {
          return -1;
     }
 }

3.创建相机连接函数

public int connectCamera(string id)//连接相机，返回-1为失败，0为成功
{
    this.seriesStr = id;
    string m_SerialNumber = "";//接收设备返回的序列号
    int temp;//接收命令执行结果
    myCamera = new MyCamera();
    try
    {
        temp = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref deviceList);//更新设备列表
        if (temp != 0)
        {
            //设备更新成功接收命令的返回值为0，返回值不为0则为异常
            return -1;
        }

        //强制相机IP
        for (int i = 0; i < deviceList.nDeviceNum; i++)
        {
        
        /*******该部分用于获取相机名称、序列号等，从而对指定的相机进行IP更改******/
           //更改IP的函数中也有该部分，重叠部分程序可进行相应的简化，本文暂不做处理
        
            deviceInfo = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(deviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));//获取设备信息
            IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(deviceInfo.SpecialInfo.stGigEInfo, 0);
            MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_GIGE_DEVICE_INFO));
            
        /*****************************************************************/
        
             m_SerialNumber = gigeInfo.chUserDefinedName;
             if(deviceInfo.nTLayerType == MyCamera.MV_GIGE_DEVICE)
             {
               //判断是否为网口相机
                if (seriesStr.Equals(m_SerialNumber))
                {
                   //如果相机用户名正确则修改IP
                   temp = myCamera.MV_CC_CreateDevice_NET(ref deviceInfo);//更改IP前需要创建设备对象
                   forceIP();
                }
             }
         }
       //更改IP后需要重新刷新设备列表，否则打开相机时会报错
       temp = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref deviceList);//更新设备列表
       for (int i = 0; i < deviceList.nDeviceNum; i++)
       {
            deviceInfo = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(deviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));//获取设备
            if (deviceInfo.nTLayerType == MyCamera.MV_GIGE_DEVICE)
            {
                 IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(deviceInfo.SpecialInfo.stGigEInfo, 0);
                  MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_GIGE_DEVICE_INFO));
                  //m_SerialNumber = gigeInfo.chSerialNumber;//获取序列号
                  m_SerialNumber = gigeInfo.chUserDefinedName;//获取用户名
           }
           else if (deviceInfo.nTLayerType == MyCamera.MV_USB_DEVICE)
           {
                  IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(deviceInfo.SpecialInfo.stUsb3VInfo, 0);
                  MyCamera.MV_USB3_DEVICE_INFO usbInfo = (MyCamera.MV_USB3_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_USB3_DEVICE_INFO));
                  m_SerialNumber = usbInfo.chUserDefinedName;
          }
          if (seriesStr.Equals(m_SerialNumber))
          {
               temp = myCamera.MV_CC_CreateDevice_NET(ref deviceInfo);
               if (MyCamera.MV_OK != temp)
               {
                    //创建相机失败
                    return -1;
               }
               temp = myCamera.MV_CC_OpenDevice_NET();//
               if (MyCamera.MV_OK != temp)
               {
                    //打开相机失败
                    return -1;
                }
                return 0;
         }
         continue;
       }
   }
   catch
   {
        return -1;
   }
   return 0;
}

4.创建开始采集、停止采集、关闭相机函数

 public int startCamera()//相机开始采集，返回0为成功，-1为失败
 {
     int temp = myCamera.MV_CC_StartGrabbing_NET();
     if (MyCamera.MV_OK != temp)
          return -1;
     return 0;
}

public int stopCamera()//停止相机采集，返回0为成功，-1为失败
{
     int temp = myCamera.MV_CC_StopGrabbing_NET();
     if (MyCamera.MV_OK != temp )
           return -1;
     return 0;
}

 public int closeCamera()//关闭相机，返回0为成功，-1为失败
 {
      int temp = stopCamera()；//停止相机采集
       if (MyCamera.MV_OK != temp )
           return -1;
      temp = myCamera.MV_CC_CloseDevice_NET();
       if (MyCamera.MV_OK != temp )
           return -1;
      temp = myCamera.MV_CC_DestroyDevice_NET();
       if (MyCamera.MV_OK != temp )
           return -1;
       return 0;
 }

5.创建发送软触发函数

//发送成功返回0，失败返回-1
public int softTrigger()
{
     int temp = myCamera.MV_CC_SetCommandValue_NET("TriggerSoftware");
     if (MyCamera.MV_OK != temp )
           return -1;
      return 0;
 }

6.创建读取图像函数
函数返回Halcon图像库可以处理的Himage格式。
如何添加halcon图像库请自行百度，网上教程非常多

//读取成功返回Himage图像，失败返回NULL
public HImage readImage()
{
    UInt32 nPayloadSize = 0;
    int temp = myCamera.MV_CC_GetIntValue_NET("PayloadSize", ref stParam);
    if (MyCamera.MV_OK != temp)
    {
        return null;
    }
    nPayloadSize = stParam.nCurValue;
    if (nPayloadSize > m_nBufSizeForDriver)
    {
        m_nBufSizeForDriver = nPayloadSize;
        m_pBufForDriver = new byte[m_nBufSizeForDriver];
        m_nBufSizeForSaveImage = m_nBufSizeForDriver * 3 + 2048;
        m_pBufForSaveImage = new byte[m_nBufSizeForSaveImage];
     }
     IntPtr pData = Marshal.UnsafeAddrOfPinnedArrayElement(m_pBufForDriver, 0);
     MyCamera.MV_FRAME_OUT_INFO_EX stFrameInfo = new MyCamera.MV_FRAME_OUT_INFO_EX();
     temp = myCamera.MV_CC_GetOneFrameTimeout_NET(pData, m_nBufSizeForDriver, ref stFrameInfo, 1000);//获取一帧图像，超时时间设置为1000
     if (MyCamera.MV_OK != temp)
     {
         return null;
     }
     HImage image = new HImage();
     if (IsMonoData(stFrameInfo.enPixelType))//判断是否为黑白图像
     {
          //如果是黑白图像，则利用Halcon图像库中的GenImage1算子来构建图像
          image .GenImage1("byte", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, pData);
     }
     else
     {
          if (stFrameInfo.enPixelType == MyCamera.MvGvspPixelType.PixelType_Gvsp_RGB8_Packed)
          {
              //如果彩色图像是RGB8格式，则可以直接利用GenImageInterleaved算子来构建图像
              image .GenImageInterleaved(pData, "rgb", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, 0, "byte", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, 0, 0, -1, 0);
          }
          else
          {
               //如果彩色图像不是RGB8格式，则需要将图像格式转换为RGB8。
               IntPtr pBufForSaveImage = IntPtr.Zero;
               if (pBufForSaveImage == IntPtr.Zero)
               {
                   pBufForSaveImage = Marshal.AllocHGlobal((int)(stFrameInfo.nWidth * stFrameInfo.nHeight * 3 + 2048));
               }
               MyCamera.MV_PIXEL_CONVERT_PARAM stConverPixelParam = new MyCamera.MV_PIXEL_CONVERT_PARAM();
               stConverPixelParam.nWidth = stFrameInfo.nWidth;
               stConverPixelParam.nHeight = stFrameInfo.nHeight;
               stConverPixelParam.pSrcData = pData;
               stConverPixelParam.nSrcDataLen = stFrameInfo.nFrameLen;
               stConverPixelParam.enSrcPixelType = stFrameInfo.enPixelType;
               stConverPixelParam.enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_RGB8_Packed;//在此处选择需要转换的目标类型
               stConverPixelParam.pDstBuffer = pBufForSaveImage;
               stConverPixelParam.nDstBufferSize = (uint)(stFrameInfo.nWidth * stFrameInfo.nHeight * 3 + 2048);
               myCamera.MV_CC_ConvertPixelType_NET(ref stConverPixelParam);
               image .GenImageInterleaved(pBufForSaveImage, "rgb", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, 0, "byte", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, 0, 0, -1, 0);
               //释放指针
               Marshal.FreeHGlobal(pBufForSaveImage);
             }
        }
        return image ;
}

7.在海康MVS安装目录下MVS\Development\Documentations\MvCameraNode.xlsx是一个关于参数设置的文档，可以参考MVS并结合该文档进行相应参数的设置，非常方便。

8.实例化相机对象，并通过软触发采集图像

 Hikvision camera = new Hikvision();//创建相机对象并实例化
 camera.connectCamera("123456");//连接相机，传入相机序列号123456
 camera.startCamera();//开启相机采集
 camera.setExposureTime(10000);//设置曝光时间为10ms
 camera.softTrigger();//发送软触发采集图像
 Himage image=camera.readImage();//获取采集到且转换后的图像
 camera.stopCamera();//停止相机采集
 camera.closeCamera();//关闭相机

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版权声明：本文为CSDN博主「大_樱_桃」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/biggestcherry/article/details/87011094文章来源地址https://www.toymoban.com/news/detail-738960.html

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