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本篇內(nèi)容主要講解“C#如何調(diào)用SDK采集圖像并在Halcon窗口中顯示”,感興趣的朋友不妨來(lái)看看。本文介紹的方法操作簡(jiǎn)單快捷,實(shí)用性強(qiáng)。下面就讓小編來(lái)帶大家學(xué)習(xí)“C#如何調(diào)用SDK采集圖像并在Halcon窗口中顯示”吧!
開(kāi)發(fā)環(huán)境 VS2012+C#(32位) Halcon12
引用Halcon動(dòng)態(tài)鏈接庫(kù)(halcondotnet.dll)
引用海康相機(jī)動(dòng)態(tài)鏈接庫(kù)(MvCameraControl.Net.dll)這個(gè)文件在MVS安裝目錄下MVS\Development\DotNet中,如果你是32位的開(kāi)發(fā)環(huán)境就選擇win32文件夾下的,如果是64位就選擇win64文件夾下的
先在創(chuàng)建的類中編寫方法,之后實(shí)例化相機(jī)類,調(diào)用類中的方法。
鼠標(biāo)右鍵單擊工程項(xiàng)目–添加–類,選擇“類”,輸入類的名稱,例如Hikvision,點(diǎn)擊右下角的“添加”。
首先,要引入的命名空間:using HalconDotNet; using MvCamCtrl.NET;
其次,需要用到的全部變量:
private MyCamera m_pMyCamera; MyCamera.MV_CC_DEVICE_INFO_LIST m_pDeviceList;//設(shè)備列表 private MyCamera.MVCC_INTVALUE stParam;//用于接收特定的參數(shù) //為讀取、保存圖像創(chuàng)建的數(shù)組 UInt32 m_nBufSizeForDriver = 3072 * 2048 * 3; byte[] m_pBufForDriver = new byte[3072 * 2048 * 3]; UInt32 m_nBufSizeForSaveImage = 3072 * 2048 * 3 * 3 + 2048; byte[] m_pBufForSaveImage = new byte[3072 * 2048 * 3 * 3 + 2048]; //要轉(zhuǎn)成的Halcon圖像 HImage image = new HImage();
//查找設(shè)備 public void DeviceListAcq() { int nRet; // ch:創(chuàng)建設(shè)備列表 en:Create Device List System.GC.Collect(); cbDeviceList.Items.Clear(); nRet = MyCamera.MV_CC_EnumDevices_NET(MyCamera.MV_GIGE_DEVICE | MyCamera.MV_USB_DEVICE, ref m_pDeviceList); if (0 != nRet) { MessageBox.Show("查找設(shè)備失敗!"); return; } // ch:在窗體列表中顯示設(shè)備名 | en:Display device name in the form list for (int i = 0; i < m_pDeviceList.nDeviceNum; i++) { MyCamera.MV_CC_DEVICE_INFO device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_pDeviceList.pDeviceInfo[i], typeof(MyCamera.MV_CC_DEVICE_INFO)); if (device.nTLayerType == MyCamera.MV_GIGE_DEVICE) { IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(device.SpecialInfo.stGigEInfo, 0); MyCamera.MV_GIGE_DEVICE_INFO gigeInfo = (MyCamera.MV_GIGE_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_GIGE_DEVICE_INFO)); if (gigeInfo.chUserDefinedName != "") { cbDeviceList.Items.Add("GigE: " + gigeInfo.chUserDefinedName + " (" + gigeInfo.chSerialNumber + ")"); } else { cbDeviceList.Items.Add("GigE: " + gigeInfo.chManufacturerName + " " + gigeInfo.chModelName + " (" + gigeInfo.chSerialNumber + ")"); } } else if (device.nTLayerType == MyCamera.MV_USB_DEVICE) { IntPtr buffer = Marshal.UnsafeAddrOfPinnedArrayElement(device.SpecialInfo.stUsb3VInfo, 0); MyCamera.MV_USB3_DEVICE_INFO usbInfo = (MyCamera.MV_USB3_DEVICE_INFO)Marshal.PtrToStructure(buffer, typeof(MyCamera.MV_USB3_DEVICE_INFO)); if (usbInfo.chUserDefinedName != "") { cbDeviceList.Items.Add("USB: " + usbInfo.chUserDefinedName + " (" + usbInfo.chSerialNumber + ")"); } else { cbDeviceList.Items.Add("USB: " + usbInfo.chManufacturerName + " " + usbInfo.chModelName + " (" + usbInfo.chSerialNumber + ")"); } } } // ch:選擇第一項(xiàng) | en:Select the first item if (m_pDeviceList.nDeviceNum != 0) { cbDeviceList.SelectedIndex = 0; } }
//打開(kāi)設(shè)備 public void OpenDevice() { if (m_pDeviceList.nDeviceNum == 0 || cbDeviceList.SelectedIndex == -1) { MessageBox.Show("未發(fā)現(xiàn)設(shè)備,請(qǐng)選擇"); return; } int nRet = -1; // ch:獲取選擇的設(shè)備信息 | en:Get selected device information MyCamera.MV_CC_DEVICE_INFO device = (MyCamera.MV_CC_DEVICE_INFO)Marshal.PtrToStructure(m_pDeviceList.pDeviceInfo[cbDeviceList.SelectedIndex], typeof(MyCamera.MV_CC_DEVICE_INFO)); // ch:打開(kāi)設(shè)備 | en:Open device if (null == m_pMyCamera) { m_pMyCamera = new MyCamera(); if (null == m_pMyCamera) { return; } } nRet = m_pMyCamera.MV_CC_CreateDevice_NET(ref device); if (MyCamera.MV_OK != nRet) { return; } nRet = m_pMyCamera.MV_CC_OpenDevice_NET(); if (MyCamera.MV_OK != nRet) { m_pMyCamera.MV_CC_DestroyDevice_NET(); MessageBox.Show("設(shè)備打開(kāi)失敗"); //ShowErrorMsg("Device open fail!", nRet); return; } // ch:探測(cè)網(wǎng)絡(luò)最佳包大小(只對(duì)GigE相機(jī)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_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:設(shè)置采集連續(xù)模式 | en:Set Continues Aquisition Mode m_pMyCamera.MV_CC_SetEnumValue_NET("AcquisitionMode", 2);// ch:工作在連續(xù)模式 | en:Acquisition On Continuous Mode m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerMode", 0); // ch:連續(xù)模式 | en:Continuous }
//連續(xù)采集(也就是實(shí)時(shí)顯示) public void ContinuesGrab(PictureBox picBox) { int nRet; // ch:開(kāi)始采集 | en:Start Grabbing nRet = m_pMyCamera.MV_CC_StartGrabbing_NET(); if (MyCamera.MV_OK != nRet) { MessageBox.Show("采集失??!"); //ShowErrorMsg("Trigger Fail!", nRet); return; } //實(shí)時(shí)采集 m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerMode", 0); // ch:顯示 | en:Display 在PictureBox控件中顯示 nRet = m_pMyCamera.MV_CC_Display_NET(picBox.Handle); if (MyCamera.MV_OK != nRet) { MessageBox.Show("顯示失敗!"); } }
//停止采集 public void StopGrab() { int nRet = -1; // ch:停止采集 | en:Stop Grabbing nRet = m_pMyCamera.MV_CC_StopGrabbing_NET(); if (nRet != MyCamera.MV_OK) { MessageBox.Show("停止采集失敗!"); } }
//關(guān)閉設(shè)備 public void CloseDevice() { // ch:關(guān)閉設(shè)備 | en:Close Device int nRet; nRet = m_pMyCamera.MV_CC_CloseDevice_NET(); if (MyCamera.MV_OK != nRet) { return; } nRet = m_pMyCamera.MV_CC_DestroyDevice_NET(); if (MyCamera.MV_OK != nRet) { return; } }
//讀取圖片轉(zhuǎn)換成Halcon圖像 public HImage ReadImage() { int nRet; //MyCamera.MVCC_INTVALUE stParam = new MyCamera.MVCC_INTVALUE(); UInt32 nPayloadSize = 0; nRet = m_pMyCamera.MV_CC_GetIntValue_NET("PayloadSize", ref stParam); if (MyCamera.MV_OK != nRet) { 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(); nRet = m_pMyCamera.MV_CC_GetOneFrameTimeout_NET(pData, m_nBufSizeForDriver, ref stFrameInfo, 1000);//獲取一幀圖像,超時(shí)時(shí)間設(shè)置為1000 if (MyCamera.MV_OK != nRet) { return null; } HImage image = new HImage(); //采集的是黑白圖像,利用Halcon圖像庫(kù)中的GenImage1算子來(lái)構(gòu)建圖像 image.GenImage1("byte", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, pData); return image; }
下面是我所做的一個(gè)窗體界面,顯示設(shè)備序列號(hào)的下拉列表做成了一個(gè)用戶控件,將上述的代碼全部放在用戶控件中,在主窗體里調(diào)用用戶控件里的方法來(lái)實(shí)現(xiàn)相機(jī)的連接和采集
具體見(jiàn)示例代碼。
示例代碼:
//查找設(shè)備 private void btnEnum_Click(object sender, EventArgs e) { ucDeviceList1.DeviceListAcq(); } //打開(kāi)設(shè)備 private void btnOpen_Click(object sender, EventArgs e) { ucDeviceList1.OpenDevice(); btnOpen.Enabled = false; btnClose.Enabled = true; btnContinuesGrab.Enabled = true; //btnSingleStep.Enabled = true; btnStopGrab.Enabled = true; } //關(guān)閉設(shè)備 private void btnClose_Click(object sender, EventArgs e) { ucDeviceList1.CloseDevice(); btnOpen.Enabled = true; btnClose.Enabled = false; btnContinuesGrab.Enabled = false; btnSingleStep.Enabled = false; btnStopGrab.Enabled = false; } //實(shí)時(shí)顯示 private void btnContinuesGrab_Click(object sender, EventArgs e) { ucDeviceList1.ContinuesGrab(picboxShowImg); btnContinuesGrab.Enabled = false; btnSingleStep.Enabled = true; btnStopGrab.Enabled = true; } //單步采集 private void btnSingleStep_Click(object sender, EventArgs e) { // 將采集到的圖像在Halcon窗口中顯示 HTuple hWind = hWindowControl1.HalconWindow; HTuple width, height; HObject hv_image; HOperatorSet.GenEmptyObj(out hv_image); hv_image.Dispose(); hv_image = ucDeviceList1.ReadImage(); HOperatorSet.GetImageSize(hv_image, out width, out height); HOperatorSet.SetPart(hWind, 0, 0, height - 1, width - 1); HOperatorSet.DispObj(img, hWind); btnStopGrab.Enabled = true; } //停止采集 private void btnStopGrab_Click(object sender, EventArgs e) { ucDeviceList1.StopGrab(); btnContinuesGrab.Enabled = true; btnStopGrab.Enabled = false; } //關(guān)閉設(shè)備 private void btnClose_Click(object sender, EventArgs e) { ucDeviceList1.CloseDevice(); btnOpen.Enabled = true; btnClose.Enabled = false; btnContinuesGrab.Enabled = false; btnSingleStep.Enabled = false; btnStopGrab.Enabled = false; }
注:上述方法是不需要修改相機(jī)IP的,但是要提前用MVS軟件修改相機(jī)的IP
到此,相信大家對(duì)“C#如何調(diào)用SDK采集圖像并在Halcon窗口中顯示”有了更深的了解,不妨來(lái)實(shí)際操作一番吧!這里是億速云網(wǎng)站,更多相關(guān)內(nèi)容可以進(jìn)入相關(guān)頻道進(jìn)行查詢,關(guān)注我們,繼續(xù)學(xué)習(xí)!
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