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本篇內容主要講解“C#如何調用SDK采集圖像并在Halcon窗口中顯示”，感興趣的朋友不妨來看看。本文介紹的方法操作簡單快捷，實用性強。下面就讓小編來帶大家學習“C#如何調用SDK采集圖像并在Halcon窗口中顯示”吧!
開發環境 VS2012+C#（32位） Halcon12
引用Halcon動態鏈接庫（halcondotnet.dll）
引用海康相機動態鏈接庫（MvCameraControl.Net.dll）這個文件在MVS安裝目錄下MVS\Development\DotNet中，如果你是32位的開發環境就選擇win32文件夾下的，如果是64位就選擇win64文件夾下的
先在創建的類中編寫方法，之后實例化相機類，調用類中的方法。
鼠標右鍵單擊工程項目–添加–類，選擇“類”，輸入類的名稱，例如Hikvision，點擊右下角的“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;//設備列表 private MyCamera.MVCC_INTVALUE stParam;//用于接收特定的參數 //為讀取、保存圖像創建的數組 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]; //要轉成的Halcon圖像 HImage image = new HImage();
//查找設備
public void DeviceListAcq()
{
int nRet;
// ch:創建設備列表 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("查找設備失敗！");
return;
}
// ch:在窗體列表中顯示設備名 | 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 | en:Select the first item
if (m_pDeviceList.nDeviceNum != 0)
{
cbDeviceList.SelectedIndex = 0;
}
} //打開設備
public void OpenDevice()
{
if (m_pDeviceList.nDeviceNum == 0 || cbDeviceList.SelectedIndex == -1)
{
MessageBox.Show("未發現設備，請選擇");
return;
}
int nRet = -1;
// ch:獲取選擇的設備信息 | 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:打開設備 | 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("設備打開失敗");
//ShowErrorMsg("Device open fail!", nRet);
return;
}
// ch:探測網絡最佳包大小(只對GigE相機有效) | 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:設置采集連續模式 | en:Set Continues Aquisition Mode
m_pMyCamera.MV_CC_SetEnumValue_NET("AcquisitionMode", 2);// ch:工作在連續模式 | en:Acquisition On Continuous Mode
m_pMyCamera.MV_CC_SetEnumValue_NET("TriggerMode", 0); // ch:連續模式 | en:Continuous
} //連續采集（也就是實時顯示）
public void ContinuesGrab(PictureBox picBox)
{
int nRet;
// ch:開始采集 | en:Start Grabbing
nRet = m_pMyCamera.MV_CC_StartGrabbing_NET();
if (MyCamera.MV_OK != nRet)
{
MessageBox.Show("采集失敗！");
//ShowErrorMsg("Trigger Fail!", nRet);
return;
}
//實時采集
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！");
}
} //關閉設備
public void CloseDevice()
{
// ch:關閉設備 | 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，超時時間設置為1000
if (MyCamera.MV_OK != nRet)
{
return null;
}
HImage image = new HImage();
//采集的是黑白圖像，利用Halcon圖像庫中的GenImage1算子來構建圖像
image.GenImage1("byte", (int)stFrameInfo.nWidth, (int)stFrameInfo.nHeight, pData);
return image;
}下面是我所做的一個窗體界面，顯示設備序列號的下拉列表做成了一個用戶控件，將上述的代碼全部放在用戶控件中，在主窗體里調用用戶控件里的方法來實現相機的連接和采集
具體見示例代碼。
示例代碼：
//查找設備
private void btnEnum_Click(object sender, EventArgs e)
{
ucDeviceList1.DeviceListAcq();
}
//打開設備
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;
}
//關閉設備
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;
}
//實時顯示
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;
}
//關閉設備
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IP的，但是要提前用MVS軟件修改相機的IP
到此，相信大家對“C#如何調用SDK采集圖像并在Halcon窗口中顯示”有了更深的了解，不妨來實際操作一番吧！這里是億速云網站，更多相關內容可以進入相關頻道進行查詢，關注我們，繼續學習！
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