作者：billy
版权声明：著作权归作者所有，商业转载请联系作者获得授权，非商业转载请注明出处
开发环境
操作系统：Windows 10 1903 18362.778
相机型号：MV-CA020-10GM
相机软件：MVS_SDK_V3_2_0_VC90_Runtime_190626，MVS_STD_3.1.0_181229
软件版本：Qt 5.12.8， vs Community
通信方式：GigE - 千兆以太网通信协议
驱动与SDK
开发包和驱动下载地址
提取码：2hhn
安装驱动和开发包完成之后，可以找到以下目录：
D:\Program Files (x86)\MVS\Development
Documentations - 使用手册、示例程序说明等等Includes - 头文件Libraries - 库文件（包括 xxx.lib，xxx.a）Samples - 示例程序源代码备注：默认在 C:\Program Files\ 或者 Program Files (x86)\Common Files\MVS路径中，存在三个文件夹，分别是Drivers（驱动）、Runtime（动态库）、Service（相机日志服务）
海康威视相机介绍
海康威视相机的文档特别清晰，特别是示例代码非常详细，可以非常快速的上手并使用。安装了海康威视相机驱动也可以使用巴斯勒的相机，博主感觉海康威视相机像是对巴斯勒相机做了包装和拓展，博主查看了源代码，其中 GenICam 这一块的代码和巴斯勒是完全相同的。。。
函数定义中把每个函数的使用都介绍的很清楚，这里就不多做介绍了。
我的代码
实现功能：相机图像的实时显示，并且可以在需要的时候获取当前帧数据，用于分析或者保存;
首先需要在pro中配置头文件和库文件
INCLUDEPATH += $$PWD/MV_Camera_Control/include/ \contains(DEFINES, WIN64) {LIBS += -L$$PWD/MV_Camera_Control/lib/win64/ -lMvCameraControl} else {LIBS += -L$$PWD/MV_Camera_Control/lib/Win32/ -lMvCameraControl}
自定义相机基类 Camera
#ifndef CAMERA_H#define CAMERA_H#include <QObject>#include <QImage>#include <QTimer>#include <QMutex>#include <opencv2/opencv.hpp>class Camera : public QObject{Q_OBJECTpublic:enum CameraType {Basler = 1, // 巴斯勒相机IC_Imaging, // 映美精相机MV, // 海康威视相机Virtual// 虚拟相机};explicit Camera(CameraType type = Basler) : m_type(type) {}virtual void initCamera() = 0;// 初始化相机virtual void destroyCamera() = 0; // 销毁相机virtual void openCamera() = 0;// 打开相机virtual void closeCamera() = 0;// 关闭相机virtual void startWork() = 0; // 开始工作virtual void stopWork() = 0; // 停止工作virtual cv::Mat takeAPic() = 0;// 获取当前图像void start() { m_timer.start(); }void stop() { m_timer.stop(); }void setInterval(int time) { m_timer.setInterval(time); }CameraType getCameraType() { return m_type; }signals:void updateImage(QImage image);protected:CameraType m_type;QMutex m_mutex;QTimer m_timer;};#endif // CAMERA_H
自定义 BMVCameraControl 相机控制类
#ifndef BMVCAMERCONTROL_H#define BMVCAMERCONTROL_H#include "../camera.h"#include "MvCameraControl.h"class BMVCameraControl : public Camera{Q_OBJECTpublic:enum BMVCameraProperty {Width, // 图片宽度Height, // 图片高度ExposureTime,// 曝光时间Brightness, // 亮度FrameRate, // 帧率Gain, // 增益PixelFormat,// 像素格式TriggerMode // 触发模式};explicit BMVCameraControl(Camera::CameraType type = Camera::CameraType::MV);virtual void initCamera() override;virtual void destroyCamera() override;virtual void openCamera() override;virtual void closeCamera() override;virtual void startWork() override;virtual void stopWork() override;virtual cv::Mat takeAPic() override;QString getCameraProperty(BMVCameraControl::BMVCameraProperty type); // 获取相机参数void setCameraProperty(BMVCameraControl::BMVCameraProperty type, double value = 0.0);// 设置相机参数public slots:void updateFrame();private:void *m_devHandle;unsigned char *m_data;int m_size;MV_FRAME_OUT_INFO_EX m_frame_info;};#endif // BMVCAMERCONTROL_H
#include "bmvcameracontrol.h"#include "globalfun.h"BMVCameraControl::BMVCameraControl(Camera::CameraType type) : Camera(type){m_timer.setInterval(GlobalValue::cam_itl);connect(&m_timer, &QTimer::timeout, this, &BMVCameraControl::updateFrame);}void BMVCameraControl::initCamera(){m_devHandle = nullptr;m_data = nullptr;m_size = 0;}void BMVCameraControl::destroyCamera(){try {stopWork();closeCamera();if ( m_devHandle ) {MV_CC_DestroyHandle(m_devHandle); // 销毁设备句柄m_devHandle = nullptr;delete[] m_data;}} catch (...) {qDebug() << "destroyCamera error !";}}void BMVCameraControl::openCamera(){try {MV_CC_DEVICE_INFO_LIST pstDevList;int ret = MV_CC_EnumDevices(MV_GIGE_DEVICE | MV_USB_DEVICE, &pstDevList);if ( ret == MV_OK ) {if ( pstDevList.nDeviceNum == 0 ) {qDebug() << "No device found !";} else {MV_CC_DEVICE_INFO m_stDevInfo;memcpy(&m_stDevInfo, pstDevList.pDeviceInfo[0], sizeof(MV_CC_DEVICE_INFO));ret = MV_CC_CreateHandle(&m_devHandle, &m_stDevInfo); // 创建设备句柄if ( ret != MV_OK ) { qDebug() << "CreateHandle failed !"; }ret = MV_CC_OpenDevice(m_devHandle); // 打开设备if ( ret != MV_OK ) { qDebug() << "OpenDevice failed !"; }// 探测网络最佳包大小（只对GigE相机有效）if ( m_stDevInfo.nTLayerType == MV_GIGE_DEVICE ){int nPacketSize = MV_CC_GetOptimalPacketSize(m_devHandle);if (nPacketSize > 0){ret = MV_CC_SetIntValue(m_devHandle, "GevSCPSPacketSize", nPacketSize);if ( ret != MV_OK ) { qDebug() << "SetIntValue failed !"; }}}ret = MV_CC_SetPixelFormat(m_devHandle, PixelType_Gvsp_Mono8); // 设置像素格式if ( ret != MV_OK ) { qDebug() << "SetPixelFormat failed !"; }}}} catch (...) {qDebug() << "openCamera error !";}}void BMVCameraControl::closeCamera(){try {MV_CC_CloseDevice(m_devHandle); // 关闭相机} catch (...) {qDebug() << "closeCamera error !";}}void BMVCameraControl::startWork(){// 判断相机是否处于连接状态if ( !MV_CC_IsDeviceConnected(m_devHandle) ) {return;}try {// 获取一帧数据的大小MVCC_INTVALUE stIntvalue;int ret = MV_CC_GetIntValue(m_devHandle, "PayloadSize", &stIntvalue);if ( ret != MV_OK ) { qDebug() << "GetIntValue failed !"; }m_size = stIntvalue.nCurValue; // 一帧数据大小m_data = (unsigned char*)malloc(m_size);memset(&m_frame_info, 0, sizeof(MV_FRAME_OUT_INFO_EX));ret = MV_CC_StartGrabbing(m_devHandle); // 开始采集图像if ( ret != MV_OK ) { qDebug() << "StartGrabbing failed !"; }m_timer.start();} catch (...) {qDebug() << "startWork error !";}}void BMVCameraControl::stopWork(){try {if ( MV_CC_IsDeviceConnected(m_devHandle) ) {MV_CC_StopGrabbing(m_devHandle); // 停止取流m_timer.stop();}} catch (...) {qDebug() << "stopWork error !";}}cv::Mat BMVCameraControl::takeAPic(){// 判断相机是否处于连接状态if ( !MV_CC_IsDeviceConnected(m_devHandle) ) {return cv::Mat();}QMutexLocker locker(&m_mutex);try {int nRet = MV_CC_GetOneFrameTimeout(m_devHandle, m_data, m_size, &m_frame_info, 1000);if ( nRet == MV_OK ) {QImage image(static_cast<uchar*>(m_data),m_frame_info.nWidth,m_frame_info.nHeight,QImage::Format_Grayscale8);QImage retImage = image.convertToFormat(QImage::Format_RGB888);cv::Mat mat = GlobalFun::convertQImageToMat(retImage);return mat.clone();} else {return cv::Mat();}} catch (...) {qDebug() << "takeAPic error !";return cv::Mat();}}QString BMVCameraControl::getCameraProperty(BMVCameraControl::BMVCameraProperty type){// 判断相机是否处于连接状态if ( !MV_CC_IsDeviceConnected(m_devHandle) ) {return "";}QString ret = "";MVCC_INTVALUE int_value;MVCC_FLOATVALUE float_value;MVCC_ENUMVALUE enum_value;try {switch (type) {case Width: {MV_CC_GetWidth(m_devHandle, &int_value);ret = QString::number(int_value.nCurValue);} break;case Height: {MV_CC_GetHeight(m_devHandle, &int_value);ret = QString::number(int_value.nCurValue);} break;case ExposureTime: {MV_CC_GetExposureTime(m_devHandle, &float_value);ret = QString::number(float_value.fCurValue);} break;case Brightness: {MV_CC_GetBrightness(m_devHandle, &int_value);ret = QString::number(int_value.nCurValue);} break;case FrameRate: {MV_CC_GetFrameRate(m_devHandle, &float_value);ret = QString::number(float_value.fCurValue);} break;case Gain: {MV_CC_GetGain(m_devHandle, &float_value);ret = QString::number(float_value.fCurValue);} break;case PixelFormat: {MV_CC_GetPixelFormat(m_devHandle, &enum_value);ret = QString::number(enum_value.nCurValue);} break;case TriggerMode: {MV_CC_GetTriggerMode(m_devHandle, &enum_value);ret = QString::number(enum_value.nCurValue);} break;default: ret = ""; break;}} catch (...) {qDebug() << "getCameraProperty error !";}return ret;}void BMVCameraControl::setCameraProperty(BMVCameraControl::BMVCameraProperty type, double value){// 判断相机是否处于连接状态if ( !MV_CC_IsDeviceConnected(m_devHandle) ) {return;}try {switch (type) {case Width: {MV_CC_SetWidth(m_devHandle, value);} break;case Height: {MV_CC_SetHeight(m_devHandle, value);} break;case ExposureTime: {MV_CC_SetExposureTime(m_devHandle, value);} break;case Brightness: {MV_CC_SetBrightness(m_devHandle, value);} break;case FrameRate: {MV_CC_SetFrameRate(m_devHandle, value);} break;case Gain: {MV_CC_SetGain(m_devHandle, value);} break;case PixelFormat: {MV_CC_SetPixelFormat(m_devHandle, value);} break;case TriggerMode: {MV_CC_SetTriggerMode(m_devHandle, value);} break;default: break;}} catch (...) {qDebug() << "setCameraProperty error !";}}void BMVCameraControl::updateFrame(){QMutexLocker locker(&m_mutex);try {int nRet = MV_CC_GetOneFrameTimeout(m_devHandle, m_data, m_size, &m_frame_info, 1000);if ( nRet == MV_OK ) {QImage image(static_cast<uchar*>(m_data),m_frame_info.nWidth,m_frame_info.nHeight,QImage::Format_Grayscale8);emit updateImage(image.convertToFormat(QImage::Format_RGB888));}} catch (...) {qDebug() << "updateFrame error !";}}
