（三）Qt+OpenCV调用海康工业相机SDK抓拍示例

2024-04-18 17:05:32

系列文章目录

提示：这里是该系列文章的所有文章的目录
第一章：（一）Qt+OpenCV调用海康工业相机SDK示例开发
第二章：（二）Qt多线程实现海康工业相机图像实时采集
第三章：（三）Qt+OpenCV调用海康工业相机SDK抓拍示例

文章目录

系列文章目录
前言
一、项目配置
二、图像采集与保存
三、示例完整代码
总结

前言

在这系列文章中，讲述了Qt下结合OpenCV与海康工业相机的使用，对前文的功能进行拓展，在这里做了一个使用海康彩色工业相机定时抓拍的示例，并将相关代码展现出来以便大家学习，如有错误之处，欢迎大家批评指正。

项目效果

提示：以下是本篇文章正文内容，下面案例可供参考

一、项目配置

本文示例是在MSVC_64bit下Release构建的，然后引入了海康SDK和OpenCV对应的库，所以项目的pro文件如下：
MyCamera.pro

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

DEFINES += QT_DEPRECATED_WARNINGS

#设置字符
contains( CONFIG,"msvc" ):QMAKE_CXXFLAGS += /source-charset:utf-8 /execution-charset:utf-8
contains( CONFIG,"msvc" ):QMAKE_CFLAGS +=/source-charset:utf-8 /execution-charset:utf-8

SOURCES += \
    capturethread.cpp \
    cmvcamera.cpp \
    main.cpp \
    widget.cpp

HEADERS += \
    capturethread.h \
    cmvcamera.h \
    widget.h

FORMS += \
    widget.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

#HikSDK
INCLUDEPATH += $$PWD/SDK/HikSDK/Includes
DEPENDPATH += $$PWD/SDK/HikSDK/Includes
LIBS += -L$$PWD/SDK/HikSDK/Lib/ -lMvCameraControl

#OpenCV
INCLUDEPATH += $$PWD/SDK/OpenCV/Includes
DEPENDPATH += $$PWD/SDK/OpenCV/Includes
LIBS += -L$$PWD/SDK/OpenCV/Lib/ -lopencv_world455

二、图像采集与保存

示例采集的原理：
//点击开始采集后,会关闭触发模式,相机就会不断回调,实时显示相机图像
//点击停止采集后,会开启触发模式并设置为软触发,需要调用命令触发回调

在设备打开后，通过点击抓拍按钮开启线程并打开保存标志位，在线程中使用OpenCV的imwrite函数来进行图像的保存。

//抓拍图像
void Widget::on_pb_grab_clicked()
{
    if(!m_bOpenDevice)
    {
        QMessageBox::warning(this,"警告","抓拍失败,请打开设备！");
        return;
    }

    int time = ui->le_time->text().toInt();
    int num = ui->le_num->text().toInt();
    m_captureThread->setCameraSignal(time,num);
    m_captureThread->setSwitchFlag(true);
    m_captureThread->setSaveFlag(true);
    m_captureThread->start();
}

......

//保存原图
void CaptureThread::saveOriginImage(cv::Mat imageMat)
{
    clock_t originClock = -clock();
    QString curTime = QTime::currentTime().toString("hhmmss");
    QString iamgeName = m_originPath + "GrabImage_" + curTime + ".jpg";
    cv::Mat saveMat;
    cvtColor(imageMat,saveMat,cv::COLOR_BGR2RGB);   //颜色格式转换
    imwrite(iamgeName.toStdString(),saveMat);
    originClock += clock();
    LOGDEBUG<<"保存原图耗时:"<<originClock<<"ms";   //测试在20ms左右
}

三、示例完整代码

示例的功能实现就不多说了，在下面的代码中有详细的注释，这里将完整代码展示出来：
1.cmvcamera.h(直接从海康提供的SDK中复制，进行了一些修改）

/************************************************************************/
/* 以C++接口为基础，对常用函数进行二次封装，方便用户使用                */
/************************************************************************/

#ifndef _MV_CAMERA_H_
#define _MV_CAMERA_H_

#include <string.h>
#include <QCoreApplication>
#include "MvCameraControl.h"
#include "opencv2/opencv.hpp"

//会跟系统函数定义冲突
//using namespace cv;

#ifndef MV_NULL
#define MV_NULL    0
#endif

class CMvCamera
{
public:
    CMvCamera();
    ~CMvCamera();

    // ch:获取SDK版本号 | en:Get SDK Version
    static int GetSDKVersion();

    // ch:枚举设备 | en:Enumerate Device
    static int EnumDevices(unsigned int nTLayerType, MV_CC_DEVICE_INFO_LIST* pstDevList);

    // ch:判断设备是否可达 | en:Is the device accessible
    static bool IsDeviceAccessible(MV_CC_DEVICE_INFO* pstDevInfo, unsigned int nAccessMode);

    // ch:打开设备 | en:Open Device
    int Open(MV_CC_DEVICE_INFO* pstDeviceInfo);

    // ch:关闭设备 | en:Close Device
    int Close();

    // ch:判断相机是否处于连接状态 | en:Is The Device Connected
    bool IsDeviceConnected();

    // ch:注册图像数据回调 | en:Register Image Data CallBack
    int RegisterImageCallBack(void(__stdcall* cbOutput)(unsigned char * pData, MV_FRAME_OUT_INFO_EX* pFrameInfo, void* pUser), void* pUser);

    // ch:注册彩色图像数据回调
    int RegisterImageCallBackRGB(void(__stdcall* cbOutput)(unsigned char * pData, MV_FRAME_OUT_INFO_EX* pFrameInfo, void* pUser), void* pUser);

    // ch:开启抓图 | en:Start Grabbing
    int StartGrabbing();

    // ch:停止抓图 | en:Stop Grabbing
    int StopGrabbing();

    // ch:主动获取一帧图像数据 | en:Get one frame initiatively
    int GetImageBuffer(MV_FRAME_OUT* pFrame, int nMsec);

    // ch:释放图像缓存 | en:Free image buffer
    int FreeImageBuffer(MV_FRAME_OUT* pFrame);

    // ch:显示一帧图像 | en:Display one frame image
    int DisplayOneFrame(MV_DISPLAY_FRAME_INFO* pDisplayInfo);

    // ch:设置SDK内部图像缓存节点个数 | en:Set the number of the internal image cache nodes in SDK
    int SetImageNodeNum(unsigned int nNum);

    // ch:获取设备信息 | en:Get device information
    int GetDeviceInfo(MV_CC_DEVICE_INFO* pstDevInfo);

    // ch:获取GEV相机的统计信息 | en:Get detect info of GEV camera
    int GetGevAllMatchInfo(MV_MATCH_INFO_NET_DETECT* pMatchInfoNetDetect);

    // ch:获取U3V相机的统计信息 | en:Get detect info of U3V camera
    int GetU3VAllMatchInfo(MV_MATCH_INFO_USB_DETECT* pMatchInfoUSBDetect);

    // ch:获取和设置Int型参数，如 Width和Height，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
    // en:Get Int type parameters, such as Width and Height, for details please refer to MvCameraNode.xlsx file under SDK installation directory
    int GetIntValue(IN const char* strKey, OUT MVCC_INTVALUE_EX *pIntValue);
    int SetIntValue(IN const char* strKey, IN int64_t nValue);

    // ch:获取和设置Enum型参数，如 PixelFormat，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
    // en:Get Enum type parameters, such as PixelFormat, for details please refer to MvCameraNode.xlsx file under SDK installation directory
    int GetEnumValue(IN const char* strKey, OUT MVCC_ENUMVALUE *pEnumValue);
    int SetEnumValue(IN const char* strKey, IN unsigned int nValue);
    int SetEnumValueByString(IN const char* strKey, IN const char* sValue);
    int GetEnumEntrySymbolic(IN const char* strKey, IN MVCC_ENUMENTRY* pstEnumEntry);

    // ch:获取和设置Float型参数，如 ExposureTime和Gain，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
    // en:Get Float type parameters, such as ExposureTime and Gain, for details please refer to MvCameraNode.xlsx file under SDK installation directory
    int GetFloatValue(IN const char* strKey, OUT MVCC_FLOATVALUE *pFloatValue);
    int SetFloatValue(IN const char* strKey, IN float fValue);

    // ch:获取和设置Bool型参数，如 ReverseX，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
    // en:Get Bool type parameters, such as ReverseX, for details please refer to MvCameraNode.xlsx file under SDK installation directory
    int GetBoolValue(IN const char* strKey, OUT bool *pbValue);
    int SetBoolValue(IN const char* strKey, IN bool bValue);

    // ch:获取和设置String型参数，如 DeviceUserID，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件UserSetSave
    // en:Get String type parameters, such as DeviceUserID, for details please refer to MvCameraNode.xlsx file under SDK installation directory
    int GetStringValue(IN const char* strKey, MVCC_STRINGVALUE *pStringValue);
    int SetStringValue(IN const char* strKey, IN const char * strValue);

    // ch:执行一次Command型命令，如 UserSetSave，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
    // en:Execute Command once, such as UserSetSave, for details please refer to MvCameraNode.xlsx file under SDK installation directory
    int CommandExecute(IN const char* strKey);

    // 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)
    int GetOptimalPacketSize(unsigned int* pOptimalPacketSize);

    // ch:注册消息异常回调 | en:Register Message Exception CallBack
    int RegisterExceptionCallBack(void(__stdcall* cbException)(unsigned int nMsgType, void* pUser), void* pUser);

    // ch:注册单个事件回调 | en:Register Event CallBack
    int RegisterEventCallBack(const char* pEventName, void(__stdcall* cbEvent)(MV_EVENT_OUT_INFO * pEventInfo, void* pUser), void* pUser);

    // ch:强制IP | en:Force IP
    int ForceIp(unsigned int nIP, unsigned int nSubNetMask, unsigned int nDefaultGateWay);

    // ch:配置IP方式 | en:IP configuration method
    int SetIpConfig(unsigned int nType);

    // ch:设置网络传输模式 | en:Set Net Transfer Mode
    int SetNetTransMode(unsigned int nType);

    // ch:像素格式转换 | en:Pixel format conversion
    int ConvertPixelType(MV_CC_PIXEL_CONVERT_PARAM* pstCvtParam);

    // ch:保存图片 | en:save image
    int SaveImage(MV_SAVE_IMAGE_PARAM_EX* pstParam);

    // ch:保存图片为文件 | en:Save the image as a file
    int SaveImageToFile(MV_SAVE_IMG_TO_FILE_PARAM* pstParam);

    // ch:绘制圆形辅助线 | en:Draw circle auxiliary line
    int DrawCircle(MVCC_CIRCLE_INFO* pCircleInfo);

    // ch:绘制线形辅助线 | en:Draw lines auxiliary line
    int DrawLines(MVCC_LINES_INFO* pLinesInfo);

    //读取相机中的图像
    int ReadBuffer(cv::Mat &image);

    //保存相机中的图像
    int SaveBuffer(QByteArray imageName);

private:

    void *m_hDevHandle;
};
#endif//_MV_CAMERA_H_

2.cmvcamera.cpp

#include "cmvcamera.h"

CMvCamera::CMvCamera()
{
    m_hDevHandle = MV_NULL;
}

CMvCamera::~CMvCamera()
{
    if (m_hDevHandle)
    {
        MV_CC_DestroyHandle(m_hDevHandle);
        m_hDevHandle = MV_NULL;
    }
}

// ch:获取SDK版本号 | en:Get SDK Version
int CMvCamera::GetSDKVersion()
{
    return MV_CC_GetSDKVersion();
}

// ch:枚举设备 | en:Enumerate Device
int CMvCamera::EnumDevices(unsigned int nTLayerType, MV_CC_DEVICE_INFO_LIST* pstDevList)
{
    return MV_CC_EnumDevices(nTLayerType, pstDevList);
}

// ch:判断设备是否可达 | en:Is the device accessible
bool CMvCamera::IsDeviceAccessible(MV_CC_DEVICE_INFO* pstDevInfo, unsigned int nAccessMode)
{
    return MV_CC_IsDeviceAccessible(pstDevInfo, nAccessMode);
}

// ch:打开设备 | en:Open Device
int CMvCamera::Open(MV_CC_DEVICE_INFO* pstDeviceInfo)
{
    if (MV_NULL == pstDeviceInfo)
    {
        return MV_E_PARAMETER;
    }

    if (m_hDevHandle)
    {
        return MV_E_CALLORDER;
    }

    int nRet  = MV_CC_CreateHandle(&m_hDevHandle, pstDeviceInfo);
    if (MV_OK != nRet)
    {
        return nRet;
    }

    nRet = MV_CC_OpenDevice(m_hDevHandle);
    if (MV_OK != nRet)
    {
        MV_CC_DestroyHandle(m_hDevHandle);
        m_hDevHandle = MV_NULL;
    }

    return nRet;
}

// ch:关闭设备 | en:Close Device
int CMvCamera::Close()
{
    if (MV_NULL == m_hDevHandle)
    {
        return MV_E_HANDLE;
    }

    MV_CC_CloseDevice(m_hDevHandle);

    int nRet = MV_CC_DestroyHandle(m_hDevHandle);
    m_hDevHandle = MV_NULL;

    return nRet;
}

// ch:判断相机是否处于连接状态 | en:Is The Device Connected
bool CMvCamera::IsDeviceConnected()
{
    return MV_CC_IsDeviceConnected(m_hDevHandle);
}

// ch:注册图像数据回调 | en:Register Image Data CallBack
int CMvCamera::RegisterImageCallBack(void(__stdcall* cbOutput)(unsigned char * pData, MV_FRAME_OUT_INFO_EX* pFrameInfo, void* pUser), void* pUser)
{
    return MV_CC_RegisterImageCallBackEx(m_hDevHandle, cbOutput, pUser);
}

// ch:注册彩色图像数据回调
int CMvCamera::RegisterImageCallBackRGB(void(__stdcall* cbOutput)(unsigned char * pData, MV_FRAME_OUT_INFO_EX* pFrameInfo, void* pUser), void* pUser)
{
    return MV_CC_RegisterImageCallBackForRGB(m_hDevHandle, cbOutput, pUser);
}

// ch:开启抓图 | en:Start Grabbing
int CMvCamera::StartGrabbing()
{
    return MV_CC_StartGrabbing(m_hDevHandle);
}

// ch:停止抓图 | en:Stop Grabbing
int CMvCamera::StopGrabbing()
{
    return MV_CC_StopGrabbing(m_hDevHandle);
}

// ch:主动获取一帧图像数据 | en:Get one frame initiatively
int CMvCamera::GetImageBuffer(MV_FRAME_OUT* pFrame, int nMsec)
{
    return MV_CC_GetImageBuffer(m_hDevHandle, pFrame, nMsec);
}

// ch:释放图像缓存 | en:Free image buffer
int CMvCamera::FreeImageBuffer(MV_FRAME_OUT* pFrame)
{
    return MV_CC_FreeImageBuffer(m_hDevHandle, pFrame);
}

// ch:设置显示窗口句柄 | en:Set Display Window Handle
int CMvCamera::DisplayOneFrame(MV_DISPLAY_FRAME_INFO* pDisplayInfo)
{
    return MV_CC_DisplayOneFrame(m_hDevHandle, pDisplayInfo);
}

// ch:设置SDK内部图像缓存节点个数 | en:Set the number of the internal image cache nodes in SDK
int CMvCamera::SetImageNodeNum(unsigned int nNum)
{
    return MV_CC_SetImageNodeNum(m_hDevHandle, nNum);
}

// ch:获取设备信息 | en:Get device information
int CMvCamera::GetDeviceInfo(MV_CC_DEVICE_INFO* pstDevInfo)
{
    return MV_CC_GetDeviceInfo(m_hDevHandle, pstDevInfo);
}

// ch:获取GEV相机的统计信息 | en:Get detect info of GEV camera
int CMvCamera::GetGevAllMatchInfo(MV_MATCH_INFO_NET_DETECT* pMatchInfoNetDetect)
{
    if (MV_NULL == pMatchInfoNetDetect)
    {
        return MV_E_PARAMETER;
    }

    MV_CC_DEVICE_INFO stDevInfo = {0};
    GetDeviceInfo(&stDevInfo);
    if (stDevInfo.nTLayerType != MV_GIGE_DEVICE)
    {
        return MV_E_SUPPORT;
    }

    MV_ALL_MATCH_INFO struMatchInfo = {0};

    struMatchInfo.nType = MV_MATCH_TYPE_NET_DETECT;
    struMatchInfo.pInfo = pMatchInfoNetDetect;
    struMatchInfo.nInfoSize = sizeof(MV_MATCH_INFO_NET_DETECT);
    memset(struMatchInfo.pInfo, 0, sizeof(MV_MATCH_INFO_NET_DETECT));

    return MV_CC_GetAllMatchInfo(m_hDevHandle, &struMatchInfo);
}

// ch:获取U3V相机的统计信息 | en:Get detect info of U3V camera
int CMvCamera::GetU3VAllMatchInfo(MV_MATCH_INFO_USB_DETECT* pMatchInfoUSBDetect)
{
    if (MV_NULL == pMatchInfoUSBDetect)
    {
        return MV_E_PARAMETER;
    }

    MV_CC_DEVICE_INFO stDevInfo = {0};
    GetDeviceInfo(&stDevInfo);
    if (stDevInfo.nTLayerType != MV_USB_DEVICE)
    {
        return MV_E_SUPPORT;
    }

    MV_ALL_MATCH_INFO struMatchInfo = {0};

    struMatchInfo.nType = MV_MATCH_TYPE_USB_DETECT;
    struMatchInfo.pInfo = pMatchInfoUSBDetect;
    struMatchInfo.nInfoSize = sizeof(MV_MATCH_INFO_USB_DETECT);
    memset(struMatchInfo.pInfo, 0, sizeof(MV_MATCH_INFO_USB_DETECT));

    return MV_CC_GetAllMatchInfo(m_hDevHandle, &struMatchInfo);
}

// ch:获取和设置Int型参数，如 Width和Height，详细内容参考SDK安装目录下的 MvCameraNode.xlsx 文件
// en:Get Int type parameters, such as Width and Height, for details please refer to MvCameraNode.xlsx file under SDK installation directory
int CMvCamera::GetIntValue(IN const char* strKey, OUT MVCC_INTVALUE_EX *pIntValue)
{
    return MV_CC_GetIntValueEx(m_hDevHandle, strKey, pIntValue);
}

int CMvCamera::SetIntValue(IN const char* strKey, IN int64_t nValue)
{
    return MV_CC_SetIntValueEx(m_hDevHandle, strKey, n

上一篇：基于nodejs+vue医院综合管理系统实现与设计python-flask-django-php
下一篇：TCP网络三次握手（链接请求）和四次挥手（断链请求），FIN报文和RST报文

码农公寓

系列文章目录

文章目录

前言

一、项目配置

二、图像采集与保存

三、示例完整代码

相关文章

`相关文章`