Halcon与工业相机（海康），视觉解析二维码

• 图像结果
• 工业相机连接
• • 1.查找设备
  • 2. 打开设备
  • 3. 设置软触发
  • 4. 设置硬触发
  • 5. 开始拍照
  • 6. 停止拍照
• halcon解码
• • 1. 初始化
  • 2. 设置解码模版
  • 3. 设置窗体参数
  • 4. 解码
• 软件操作
• 下载链接

图像结果

工业相机连接

1.查找设备

   public void Search_DeviceList(){    int nRet;    // ch:创建设备列表 en:Create Device List    System.GC.Collect();    nRet = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref m_pDeviceList);    if (0 != nRet)    { ShowErrorMsg("Enumerate devices fail!", 0); return;    }}

2. 打开设备

 public bool Open() {     if (null == m_pMyCamera)     {  m_pMyCamera = new MyCamera();  if (null == m_pMyCamera)  {      return false;  }     }     int nRet = -1;     nRet = m_pMyCamera.MV_CC_CreateDevice_NET(ref mDevice);     if (MyCamera.MV_OK != nRet)     {  return false;     }     nRet = m_pMyCamera.MV_CC_OpenDevice_NET();     if (MyCamera.MV_OK != nRet)     {  m_pMyCamera.MV_CC_DestroyDevice_NET();  return false;     }     // ch:探测网络最佳包大小(只对GigE相机有效) | en:Detection network optimal package size(It only works for the GigE camera)     if (mDevice.nTLayerType == MyCamera.MV_GIGE_DEVICE)     {  int nPacketSize = m_pMyCamera.MV_CC_GetOptimalPacketSize_NET();  if (nPacketSize > 0)  {      nRet = m_pMyCamera.MV_CC_SetIntValue_NET("GevSCPSPacketSize", (uint)nPacketSize);      if (nRet != MyCamera.MV_OK)      {   Console.WriteLine("Warning: Set Packet Size failed {0:x8}", nRet);      }  }  else  {      Console.WriteLine("Warning: Get Packet Size failed {0:x8}", nPacketSize);  }     }     // ch:获取包大小 || en: Get Payload Size     MyCamera.MVCC_INTVALUE stParam = new MyCamera.MVCC_INTVALUE();     nRet = m_pMyCamera.MV_CC_GetIntValue_NET("PayloadSize", ref stParam);     if (MyCamera.MV_OK != nRet)     {  return false;     }     g_nPayloadSize = stParam.nCurValue;     // ch:获取高 || en: Get Height     nRet = m_pMyCamera.MV_CC_GetIntValue_NET("Height", ref stParam);     if (MyCamera.MV_OK != nRet)     {  return false;     }     nHeight = stParam.nCurValue;     // ch:获取宽 || en: Get Width     nRet = m_pMyCamera.MV_CC_GetIntValue_NET("Width", ref stParam);     if (MyCamera.MV_OK != nRet)     {  return false;     }     nWidth = stParam.nCurValue;     m_pDataForRed = new byte[nWidth * nHeight];     m_pDataForGreen = new byte[nWidth * nHeight];     m_pDataForBlue = new byte[nWidth * nHeight];     m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerMode", 1);//触发模式打开      m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerSource", 0);//设置外部触发     return true; }

3. 设置软触发

public void TriggerExec() {     if (m_pMyCamera != null)     {  int nRet = m_pMyCamera.MV_CC_SetCommandValue_NET("TriggerSoftware");  if (MyCamera.MV_OK != nRet)  {      ShowErrorMsg("Trigger Fail", nRet);  }     } }

4. 设置硬触发

 public void SetTriggerMode(uint TriggerSource) {     if (m_pMyCamera != null)     {  m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerMode", 1);  m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerSource", TriggerSource);     } }

5. 开始拍照

public bool Start() {     int nRet;     try     {  if (m_pMyCamera != null)  {      nRet = m_pMyCamera.MV_CC_StartGrabbing_NET();      if (MyCamera.MV_OK != nRet)      {   return false;      }      m_bGrabbing = true;  }  return false;  if (Show_Image)  {      nRet = m_pMyCamera.MV_CC_Display_NET(hWnd);      if (MyCamera.MV_OK != nRet)      {   ShowErrorMsg("显示失败", nRet);      }  }     }     catch (Exception ex)     {     }     return true; }

6. 停止拍照

 public bool Stop() {     if (m_pMyCamera != null)     {  int nRet = -1;  // ch:停止采集 | en:Stop Grabbing  nRet = m_pMyCamera.MV_CC_StopGrabbing_NET();  if (nRet != MyCamera.MV_OK)  {      return false;  }  // ch:标志位设为false | en:Set flag bit false  m_bGrabbing = false;     }     return true; }

halcon解码

1. 初始化

   public HWindow Open_Window(IntPtr handle, int pbWidth, int pbHeight) {     HTuple hWindowRow, hWindowColumn;     hWindowRow = 0;     hWindowColumn = 0;     HTuple hWindowID = (HTuple)handle;     hv_WindowHandle = new HWindow();     hv_WindowHandle.OpenWindow(hWindowRow, hWindowColumn, pbWidth, pbHeight, hWindowID, "visible", "");     return hv_WindowHandle; }

2. 设置解码模版

 public HTuple Create_QR_Code_Model() {     hv_DataCodeHandle = new HTuple();     //创建第一个二维码模版     HOperatorSet.CreateDataCode2dModel("QR Code", "default_parameters", "maximum_recognition", out hv_DataCodeHandle);     return hv_DataCodeHandle; }

3. 设置窗体参数

  /// 
 /// 设置显示窗体参数 ///  ///  ///  ///  public void SetH_Window(HWindow hWindow, int vWidth, int vHeight) {     HOperatorSet.SetWindowAttr("background_color", "black");     //set_display_font(hv_WindowHandle, 10, "mono", "false", "false");     HOperatorSet.SetLineWidth(hWindow, 1);     HOperatorSet.SetColor(hWindow, "cyan");     HDevWindowStack.Push(hWindow);     HOperatorSet.SetPart(hWindow, 0, 0, vHeight - 1, vWidth - 1); }

4. 解码

 public void get_reader_data_all_result(HObject ho_Image, out string decodeStrings, out string time, out string polarity, out string mirrored, out string version, out string error_correction_level {     time = "0"; decodeStrings = ""; polarity = ""; mirrored = ""; version = "";     error_correction_level = "";     HObject ho_SymbolXLDs;     HTuple hv_T1 = new HTuple(), hv_ResultHandles = new HTuple(), hv_ResultMessage = null; ;     HTuple hv_DecodedDataStrings = new HTuple(), hv_T2 = new HTuple();     HTuple hv_Time = new HTuple();     HTuple  hv_c = null, hv_ResultVariousValues = null;     HTuple hv_ResultVariousNames = new HTuple();     HTuple hv_ResultVariousNames_cn = new HTuple();     HOperatorSet.GenEmptyObj(out ho_SymbolXLDs);     //HOperatorSet.GetImageSize(ho_Image, out hv_Width, out hv_Height);     try     {  HOperatorSet.CountSeconds(out hv_T1);  ho_SymbolXLDs.Dispose();      HOperatorSet.FindDataCode2d(ho_Image, out ho_SymbolXLDs, hv_DataCodeHandle, new HTuple(),new HTuple(), out hv_ResultHandles, out hv_DecodedDataStrings);      decodeStrings = hv_DecodedDataStrings.Length == 0 ? "ERROR" : hv_DecodedDataStrings.S;      HOperatorSet.CountSeconds(out hv_T2);      hv_Time = 1000 * (hv_T2 - hv_T1);      //hv_ResultMessage = ("Time: " + (hv_Time.TupleString(".2f"))) + " ms";      time = hv_Time.TupleString(".2f");      hv_ResultMessage = "Time: " + time + " ms";      HOperatorSet.DispObj(ho_Image, hv_WindowHandle);  }     catch (Exception EX)     {  ho_SymbolXLDs.Dispose();     } }

软件操作

打开软件，自动查找设备，依次点击 打开设备、初始化，然后点击开始采集。
连续模式：相机自动拍照返回照片，软件解码，
触发模式：不勾选软触发，是采用外部传感器触发。
勾选软触发，是点击后面 软件触发一次，相机拍照一次

下载链接

Halcon与工业相机（海康），视觉解析二维码