C#和Halcon联合编程完成海康工业相机数据转化

C#调用海康工业相机数据转Halcon格式

C#、工业相机和Halcon的混合编程

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前言

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提示：以下是本篇文章正文内容，下面案例可供参考

一、命名空间的引用

其中最重要的两个命名空间：
using HalconDotNet; （Halcon使用）
using MvCamCtrl.NET;（海康工业相机使用）

二、海康相机采集图像

1.查找设备

代码如下（示例）：

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

            // ch:在窗体列表中显示设备名 | en:Display device name in the form list
            for (int i = 0; i < m_stDeviceList.nDeviceNum; i++)
            {
                MyCamera.MV_CC_DEVICE_INFO device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO));
                if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
                {
                    MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)MyCamera.ByteToStruct(device.SpecialInfo.stGigEInfo, typeof(MyCamera.MV_GIGE_DEVICE_INFO));
                    
                    if (gigeInfo.chUserDefinedName != "")
                    {
                        cbDeviceList.Items.Add("GEV: " + gigeInfo.chUserDefinedName + " (" + gigeInfo.chSerialNumber + ")");
                    }
                    else
                    {
                        cbDeviceList.Items.Add("GEV: " + gigeInfo.chManufacturerName + " " + gigeInfo.chModelName + " (" + gigeInfo.chSerialNumber + ")");
                    }
                }
                else if (device.nTLayerType == MyCamera.MV_USB_DEVICE)
                {
                    MyCamera.MV_USB3_DEVICE_INFO usbInfo = (MyCamera.MV_USB3_DEVICE_INFO)MyCamera.ByteToStruct(device.SpecialInfo.stUsb3VInfo, typeof(MyCamera.MV_USB3_DEVICE_INFO));
                    if (usbInfo.chUserDefinedName != "")
                    {
                        cbDeviceList.Items.Add("U3V: " + usbInfo.chUserDefinedName + " (" + usbInfo.chSerialNumber + ")");
                    }
                    else
                    {
                        cbDeviceList.Items.Add("U3V: " + usbInfo.chManufacturerName + " " + usbInfo.chModelName + " (" + usbInfo.chSerialNumber + ")");
                    }
                }
            }

            // ch:选择第一项 | en:Select the first item
            if (m_stDeviceList.nDeviceNum != 0)
            {
                cbDeviceList.SelectedIndex = 0;
            }
        }

2.打开设备

代码如下（示例）：

private void OpenDevicce_Click(object sender, EventArgs e)
        {
            if (m_stDeviceList.nDeviceNum == 0 || cbDeviceList.SelectedIndex == -1)
            {
                ShowErrorMsg("No device, please select", 0);
                return;
            }

            // ch:获取选择的设备信息 | en:Get selected device information
            MyCamera.MV_CC_DEVICE_INFO device = 
                (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_stDeviceList.pDeviceInfo[cbDeviceList.SelectedIndex],
                                                              typeof(MyCamera.MV_CC_DEVICE_INFO));

            // ch:打开设备 | en:Open device
            if (null == m_MyCamera)
            {
                m_MyCamera = new MyCamera();
                if (null == m_MyCamera)
                {
                    ShowErrorMsg("Applying resource fail!", MyCamera.MV_E_RESOURCE);
                    return;
                }
            }

            int nRet = m_MyCamera.MV_CC_CreateDevice_NET(ref device);
            if (MyCamera.MV_OK != nRet)
            {
                ShowErrorMsg("Create device fail!", nRet);
                return;
            }

            nRet = m_MyCamera.MV_CC_OpenDevice_NET();
            if (MyCamera.MV_OK != nRet)
            {
                m_MyCamera.MV_CC_DestroyDevice_NET();
                ShowErrorMsg("Device open fail!", nRet);
                return;
            }

            // 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 (device.nTLayerType == MyCamera.MV_GIGE_DEVICE)
            {
                int nPacketSize = m_MyCamera.MV_CC_GetOptimalPacketSize_NET();
                if (nPacketSize > 0)
                {
                    nRet = m_MyCamera.MV_CC_SetIntValueEx_NET("GevSCPSPacketSize", nPacketSize);
                    if (nRet != MyCamera.MV_OK)
                    {
                        ShowErrorMsg("Set Packet Size failed!", nRet);
                    }
                }
                else
                {
                    ShowErrorMsg("Get Packet Size failed!", nPacketSize);
                }
            }
            // ch:设置采集连续模式 | en:Set Continues Aquisition Mode
            m_MyCamera.MV_CC_SetEnumValue_NET("AcquisitionMode", (uint)MyCamera.MV_CAM_ACQUISITION_MODE.MV_ACQ_MODE_CONTINUOUS);
            m_MyCamera.MV_CC_SetEnumValue_NET("TriggerMode", (uint)MyCamera.MV_CAM_TRIGGER_MODE.MV_TRIGGER_MODE_OFF);

            bnGetParam_Click(null, null);// ch:获取参数 | en:Get parameters

        }

3.开始采集图像

代码如下（示例）：

private void StartGrab_Click(object sender, EventArgs e)
        {
// ch:前置配置 | en:pre-operation
            int nRet = NecessaryOperBeforeGrab();
            if (MyCamera.MV_OK != nRet)
            {
                return;
            }
            // ch:标志位置true | en:Set position bit true
            m_bGrabbing = true;

            m_stFrameInfo.nFrameLen = 0;//取流之前先清除帧长度
            m_stFrameInfo.enPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_Undefined;
            
            m_hReceiveThread = new Thread(ReceiveThreadProcess);
            m_hReceiveThread.Start();

            // ch:开始采集 | en:Start Grabbing
            nRet = m_MyCamera.MV_CC_StartGrabbing_NET();
            if (MyCamera.MV_OK != nRet)
            {
                m_bGrabbing = false;
                m_hReceiveThread.Join();
                ShowErrorMsg("Start Grabbing Fail!", nRet);
                return;
            }
		}

4.关闭设备

代码如下（示例）：

private void CloseDevice_Click(object sender, EventArgs e)
        {
            // ch:标志位设为false | en:Set flag bit false
            m_bGrabbing = false;
            m_hReceiveThread.Join();

            // ch:停止采集 | en:Stop Grabbing
            int nRet = m_MyCamera.MV_CC_StopGrabbing_NET();
            if (nRet != MyCamera.MV_OK)
            {
                ShowErrorMsg("Stop Grabbing Fail!" , nRet);
            }

            // ch:控件操作 | en:Control Operation
            SetCtrlWhenStopGrab();
        }

三、工业相机采集图像数据转化

代码如下（示例）：

public void ReceiveThreadProcess()
        {
        	HImage image = new HImage();
            MyCamera.MV_FRAME_OUT stFrameInfo = new MyCamera.MV_FRAME_OUT();
            MyCamera.MV_DISPLAY_FRAME_INFO stDisplayInfo = new MyCamera.MV_DISPLAY_FRAME_INFO();
            MyCamera.MV_PIXEL_CONVERT_PARAM stConvertInfo = new 					        
            MyCamera.MV_PIXEL_CONVERT_PARAM();
            int nRet = MyCamera.MV_OK;
                nRet = m_MyCamera.MV_CC_GetImageBuffer_NET(ref stFrameInfo, 1000);
                if (nRet == MyCamera.MV_OK)
                {
                    lock (BufForDriverLock)
                    {
                        m_stFrameInfo = stFrameInfo.stFrameInfo;
                        CopyMemory(m_BufForDriver, stFrameInfo.pBufAddr, stFrameInfo.stFrameInfo.nFrameLen);
                        stConvertInfo.nWidth = stFrameInfo.stFrameInfo.nWidth;
                        stConvertInfo.nHeight = stFrameInfo.stFrameInfo.nHeight;
                        stConvertInfo.enSrcPixelType = stFrameInfo.stFrameInfo.enPixelType;
                        stConvertInfo.pSrcData = stFrameInfo.pBufAddr;
                        stConvertInfo.nSrcDataLen = stFrameInfo.stFrameInfo.nFrameLen;
                        stConvertInfo.pDstBuffer = m_ConvertDstBuf;
                        stConvertInfo.nDstBufferSize = m_nConvertDstBufLen;
                        if (PixelFormat.Format8bppIndexed == m_bitmap.PixelFormat)
                        {
                            stConvertInfo.enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_Mono8;
                            m_MyCamera.MV_CC_ConvertPixelType_NET(ref stConvertInfo);
                        }
                        else
                        {
                            stConvertInfo.enDstPixelType = MyCamera.MvGvspPixelType.PixelType_Gvsp_BGR8_Packed;
                            m_MyCamera.MV_CC_ConvertPixelType_NET(ref stConvertInfo);
                        }
                    }
					image.GenImage1("bety",PWidth，PHeight,PData);
					imG = image;
					HOperatorSet.ClearWindows();
					HOperatorSet.SetPart(HWindow , 0 , 0 , PWidth-1 , PHeight-1);
                    HOperatorSet.DispObj(imG, HWindow);
                }
                else
                {}
            
        }

总结

C#和Halcon联合编程完成海康相机的连续触发和软触发。