QT+opencv调用海康工业相机

最近在使用Opencv调用海康工业相机的程序，从网上查了好多资料，也走了不少弯路，在这里分享下，希望大家少走弯路！

开发环境

QT5.14.2 +MSVC2017 64bit + opencv4.5

引用海康开发文件

这里就不多少了网上有好多，可以参考记得工程文件添加引用路径
opencv


```cpp
INCLUDEPATH += D:/Environment/opencv/build/include\D:/Environment/opencv/build/include/opencv2
LIBS += D:/Environment/opencv/build/x64/vc15/lib/opencv_world451d.lib

海康

INCLUDEPATH += $$PWD/includes
LIBS += $$PWD/libs/MvCameraControl.lib\

直接上代码

界面

头文件

#include <QMainWindow>
#include <MvCameraControl.h>
#include <opencv2/opencv.hpp>
#include <QTimer>QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACEclass MainWindow : public QMainWindow
{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();public://公共函数void EnumDevice();//设备枚举void ConnectDevice();//连接设备void SetTriggerMode();//设置触发模式void GrabImage();//开始取流//RGB转BGRint RGB2BGR( unsigned char* pRgbData, unsigned int nWidth, unsigned int nHeight );//图片格式转Mat类型并返回Matcv::Mat Convert2Mat(MV_FRAME_OUT_INFO_EX* pstImageInfo, unsigned char * pData);private slots://按键槽函数void on_pushButton_seachDevice_clicked();void on_pushButton_grabImage_clicked();void on_pushButton_stopGrab_clicked();private slots:// 自定义槽函数void GetImage();//获取图像private://全局对象MV_CC_DEVICE_INFO_LIST stDeviceList;//实例化设备列表int nRet;//定义返回接收值void* handle;//实例化设备句柄unsigned char * pData;//图像信息unsigned int g_nPayloadSize;//图像尺寸mat_to_img MatToImage;//Mat转ImageQTimer * timer;//创建定时器MV_FRAME_OUT_INFO_EX stImageInfo;private:Ui::MainWindow *ui;
};

CPP文件

#include "Mainwindow.h"
#include "ui_mainwindow.h"
#include <QDebug>
#include <QMessageBox>
#include <Windows.h>#ifdef WIN32
#pragma execution_character_set("utf-8")//解决QT VC中文乱码
#endifMainWindow::MainWindow(QWidget *parent): QMainWindow(parent), ui(new Ui::MainWindow)
{ui->setupUi(this);/*初始化对象↓*/nRet = MV_OK;handle = NULL;g_nPayloadSize = 0;stImageInfo = {0};/*↑初始化对象*/}MainWindow::~MainWindow()
{timer->stop();delete ui;delete timer;}void MainWindow::EnumDevice()//枚举设备
{memset(&stDeviceList,0,sizeof(MV_CC_DEVICE_INFO_LIST));//开辟空间nRet = MV_CC_EnumDevices(MV_GIGE_DEVICE,&stDeviceList);//枚举设备并返回信息进行判断if(nRet != MV_OK){QString text = QString("枚举设备失败！nRet [0x%1]").arg(nRet);QMessageBox::warning(this,"警告",text);return;}if(stDeviceList.nDeviceNum > 0){for (unsigned int i = 0;i < stDeviceList.nDeviceNum;i++){MV_CC_DEVICE_INFO* pDeviceInfo = stDeviceList.pDeviceInfo[i];if(pDeviceInfo == NULL){continue;}wchar_t* pUserName = NULL;if(pDeviceInfo->nTLayerType == MV_GIGE_DEVICE){int nIp1 = ((stDeviceList.pDeviceInfo[i]->SpecialInfo.stGigEInfo.nCurrentIp & 0xff000000) >> 24);int nIp2 = ((stDeviceList.pDeviceInfo[i]->SpecialInfo.stGigEInfo.nCurrentIp & 0x00ff0000) >> 16);int nIp3 = ((stDeviceList.pDeviceInfo[i]->SpecialInfo.stGigEInfo.nCurrentIp & 0x0000ff00) >> 8);int nIp4 = (stDeviceList.pDeviceInfo[i]->SpecialInfo.stGigEInfo.nCurrentIp & 0x000000ff);if(std::strcmp("",(LPCSTR)(pDeviceInfo->SpecialInfo.stGigEInfo.chUserDefinedName)) != 0){DWORD dwLenUserName = MultiByteToWideChar(CP_ACP,0,(LPCSTR)(pDeviceInfo->SpecialInfo.stGigEInfo.chUserDefinedName),-1,NULL,0);pUserName = new wchar_t[dwLenUserName];MultiByteToWideChar(CP_ACP,0,(LPCSTR)(pDeviceInfo->SpecialInfo.stGigEInfo.chUserDefinedName),-1,pUserName,dwLenUserName);}else{DWORD dwLenUserName = MultiByteToWideChar(CP_ACP,0,(LPCSTR)(pDeviceInfo->SpecialInfo.stGigEInfo.chUserDefinedName),-1,NULL,0);pUserName = new wchar_t[dwLenUserName];MultiByteToWideChar(CP_ACP,0,(LPCSTR)(pDeviceInfo->SpecialInfo.stGigEInfo.chUserDefinedName),-1,pUserName,dwLenUserName);}QString text = QString("[%1]Gige:%2(%3.%4.%5.%6)").arg(i).arg(pUserName).arg(nIp1).arg(nIp2).arg(nIp3).arg(nIp4);ui->comboBox_DeviceList->addItem(text);}else{QMessageBox::warning(this,"警告","未知设备");QString text = QString("未知设备[%1]").arg(i);ui->comboBox_DeviceList->addItem(text);}if(pUserName){delete [] pUserName;pUserName = NULL;}}}if(stDeviceList.nDeviceNum == 0){QMessageBox::warning(this,"警告","未发现设备");return;}
}void MainWindow::ConnectDevice()//连接设备并打开
{//创建设备句柄unsigned int nIndex = ui->comboBox_DeviceList->currentIndex();nRet = MV_CC_CreateHandle(&handle,stDeviceList.pDeviceInfo[nIndex]);if(nRet != MV_OK){QString text = QString("创建设备失败！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);return;}//打开设备nRet = MV_CC_OpenDevice(handle);if(nRet != MV_OK){QString text = QString("打开设备失败！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);return;}// 检测网络最近封装尺寸(仅支持 GigE camera)if (stDeviceList.pDeviceInfo[nIndex]->nTLayerType == MV_GIGE_DEVICE){int nPacketSize = MV_CC_GetOptimalPacketSize(handle);if (nPacketSize > 0){nRet = MV_CC_SetIntValue(handle,"GevSCPSPacketSize",nPacketSize);if(nRet != MV_OK){QString text = QString("设置封装尺寸失败！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);}}else{QString text = QString("获取封装尺寸失败！nRet [%1]").arg(nPacketSize);QMessageBox::warning(this,"警告",text);}}}void MainWindow::SetTriggerMode()//设置触发模式
{nRet = MV_CC_SetEnumValue(handle, "TriggerMode", 0);if (MV_OK != nRet){printf("Set Trigger Mode fail! nRet [0x%x]\n", nRet);QString text = QString("设置触发模式失败！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);return;}
}void MainWindow::GrabImage()//开始取流
{//获取playload尺寸MVCC_INTVALUE stParam;memset(&stParam, 0, sizeof(MVCC_INTVALUE));nRet = MV_CC_GetIntValue(handle, "PayloadSize", &stParam);if (MV_OK != nRet){QString text = QString("获取playlord失败！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);return;}g_nPayloadSize = stParam.nCurValue;//开始取流nRet = MV_CC_StartGrabbing(handle);if(nRet != MV_OK){printf("Start Grabbing fail! nRet [0x%x]\n", nRet);
//        QString text = QString("取流失败！nRet [0x%1]").arg(nRet);
//        QMessageBox::warning(this,"警告",text);return;}
//    MV_FRAME_OUT_INFO_EX stImageInfo = {0};memset(&stImageInfo,0,sizeof (MV_FRAME_OUT_INFO_EX));pData = (unsigned char*)malloc(sizeof (unsigned char)* (g_nPayloadSize));if (pData == NULL){QMessageBox::warning(this,"警告","分配内容失败！");return;}// 获取一张图片get one frame from camera with timeout=1000msnRet = MV_CC_GetOneFrameTimeout(handle, pData, g_nPayloadSize, &stImageInfo, 1000);if (nRet == MV_OK){printf("Get One Frame: Width[%d], Height[%d], nFrameNum[%d]\n",stImageInfo.nWidth, stImageInfo.nHeight, stImageInfo.nFrameNum);}else{QString text = QString("无图像数据！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);free(pData);pData = NULL;return;}
}int MainWindow::RGB2BGR(unsigned char *pRgbData, unsigned int nWidth, unsigned int nHeight)//RGB转BGR
{if ( NULL == pRgbData ){return MV_E_PARAMETER;}for (unsigned int j = 0; j < nHeight; j++){for (unsigned int i = 0; i < nWidth; i++){unsigned char red = pRgbData[j * (nWidth * 3) + i * 3];pRgbData[j * (nWidth * 3) + i * 3]     = pRgbData[j * (nWidth * 3) + i * 3 + 2];pRgbData[j * (nWidth * 3) + i * 3 + 2] = red;}}return MV_OK;
}cv::Mat MainWindow::Convert2Mat(MV_FRAME_OUT_INFO_EX *pstImageInfo, unsigned char *pData)//转Mat格式
{cv::Mat srcImage;if ( pstImageInfo->enPixelType == PixelType_Gvsp_Mono8 ){srcImage = cv::Mat(pstImageInfo->nHeight, pstImageInfo->nWidth, CV_8UC1, pData);return srcImage;}else if ( pstImageInfo->enPixelType == PixelType_Gvsp_RGB8_Packed ){RGB2BGR(pData, pstImageInfo->nWidth, pstImageInfo->nHeight);srcImage = cv::Mat(pstImageInfo->nHeight, pstImageInfo->nWidth, CV_8UC3, pData);return srcImage;}else{QMessageBox::warning(this,"警告","不支持此类型转换");return srcImage;}if ( NULL == srcImage.data ){QMessageBox::warning(this,"警告","转换图像为空");return srcImage;}
}void MainWindow::on_pushButton_seachDevice_clicked()//按下查询设备按钮
{EnumDevice();//调用枚举设备函数
}void MainWindow::on_pushButton_grabImage_clicked()//按下采样按钮
{ConnectDevice();SetTriggerMode();GrabImage();//GetImage();timer = new QTimer;timer->start(300);connect(timer,&QTimer::timeout,this,&MainWindow::GetImage);//通过定时器循环调用显示图像
}void MainWindow::GetImage()//采集一张图片
{nRet = MV_CC_GetOneFrameTimeout(handle, pData, g_nPayloadSize, &stImageInfo, 1000);if (nRet == MV_OK){cv::Mat dstImga;dstImga = Convert2Mat(&stImageInfo, pData);//cv::imshow("image",dstImga);cv::cvtColor(dstImga,dstImga,cv::COLOR_BGR2RGB);QImage Qtemp = QImage((const unsigned char*)(dstImga.data), dstImga.cols, dstImga.rows, dstImga.step, QImage::Format_RGB888);ui->label_show->setScaledContents(true);ui->label_show->setPixmap(QPixmap::fromImage(Qtemp));}else{QString text = QString("无图像数据！nRet [%1]").arg(nRet);QMessageBox::warning(this,"警告",text);free(pData);pData = NULL;return;}}void MainWindow::on_pushButton_stopGrab_clicked()//按下停止采集按钮
{timer->stop();// 关闭取流nRet = MV_CC_StopGrabbing(handle);if (MV_OK != nRet){printf("Stop Grabbing fail! nRet [0x%x]\n", nRet);return;}//关闭设备nRet = MV_CC_CloseDevice(handle);if (MV_OK != nRet){printf("ClosDevice fail! nRet [0x%x]\n", nRet);return;}// Destroy handlenRet = MV_CC_DestroyHandle(handle);if (MV_OK != nRet){printf("Destroy Handle fail! nRet [0x%x]\n", nRet);return;}
}

就到这里，本人也是小白，刚接触编程没多久，班门弄斧大神轻喷！

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QT+opencv调用海康工业相机

这里写自定义目录标题

QT+opencv调用海康工业相机

开发环境

引用海康开发文件

直接上代码

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