[视觉实战案例]Qt调用Basler网口工业相机SDK实现采图和相机参数设置

1、采图UI显示

2、硬件连接和IP配置

2.1 外触发硬件接线

根据相机接线图，连接相机的电源的触发信号输入；

2.2 IP配置

Gige网口相机需要电脑网卡和相机在同一ip段内，支持动态、静态等方式配置IP，打开Pylon IP Configurator来匹配IP，如下

3、代码实现

基本采图功能Balser都有对应的Demo进行参考，这里只截取相机采图和部分参数设置功能演示。

balser_gigeCamera.h

#ifndef BALSER_GIGECAMERA_H
#define BALSER_GIGECAMERA_H
/***************************
* @projectName   camera_test
* @brief         Basler相机图像采集及参数设置功能；
* @author        Alaric
* @date          2018-11-04
**************************/

#include <QImage>
#include "balser_gigecamera_global.h"
#include <QObject>

#include <pylon/PylonIncludes.h>
#include <pylon/BaslerUniversalInstantCamera.h>
#include <pylon/_BaslerUniversalCameraParams.h>
#include <QMutex>

using namespace std;
using namespace Pylon;
using namespace GenApi;
using namespace Basler_UniversalCameraParams;

class BALSER_GIGECAMERASHARED_EXPORT Balser_GigeCamera : public QObject, public CImageEventHandler
{
    Q_OBJECT
public:
    Balser_GigeCamera(QObject *parent = nullptr);
    ~Balser_GigeCamera();
    
    enum BaslerCamera_Type{
        Type_Basler_Freerun, //设置相机的内触发
        Type_Basler_Line1, //设置相机的外触发
        Type_Basler_ExposureTimeAbs, //设置相机的曝光时间
        Type_Basler_GainRaw, //设置相机的增益
        Type_Basler_AcquisitionFrameRateAbs, //设置相机的频率
        Type_Basler_Width, //图片的宽度
        Type_Basler_Height, //图片的高度
        Type_Basler_LineSource, //灯的触发信号
    };
    
    void initCamera();                   //初始化相机
    void OpenCamera();                   //打开相机
    void CloseCamera();                   //关闭相机
    void deleteAll();                    //删除相机
    
    int getExposureTime();                //获得曝光时间
    void setExposureTime(int time);       //设置曝光时间
    int getGain();                        //获得增益
    void setGain(int value);              //设置增益
    void setFrameRate(int value);         //设置帧率
    int getFrameRate();                   //获得帧率
    void OneKeyAutoExTime();              //一键自动曝光
    void SetCamera(Balser_GigeCamera::BaslerCamera_Type index, int tmpValue = 0); // 设置各种参数
    int GetCamera(Balser_GigeCamera::BaslerCamera_Type index); // 获取各种参数
    void AutoExposureOnce(CBaslerUniversalInstantCamera& camera);      //自动曝光
    
    void StartAcquire();  //开始采集
    void StopAcquire();   //结束采集
    void StartSnap();     //抓图
    
    bool GrabOnLine_Signal;     //实时采图信号
    
signals:
    void canShowImg(QImage img);         //发送图像数据
    
public slots:
    void WorkTypeSignal(int work_type);         //接收图像处理信号，0为Once,1为Online;
private:
    CBaslerUniversalInstantCamera m_basler;
    CGrabResultPtr m_ptrGrabResult;
    CImageFormatConverter m_formatConverter;//Basler 图片格式转换类
    CPylonImage pylonImage; //Basler 图像格式
    QMutex m_mutexLock;
    
    int TestImg_WorkType = -1;          //图像处理方式，默认-1为不处理，0为Once，1为Online；
    QImage CopyImgToQImage(CGrabResultPtr ptrGrabResult);
    
protected:
    virtual void OnImageGrabbed(CInstantCamera &camera, const CGrabResultPtr &grabResult);
};

#endif // BALSER_GIGECAMERA_H

这里balser采集到的BYTE格式的图像数据按照通道数转换成QImage格式，最后发送给UI线程进行显示。

balser_gigecamera.cpp

#include "balser_gigecamera.h"
#include <QDebug>

Balser_GigeCamera::Balser_GigeCamera(QObject *parent) : QObject(parent)
{
    
}

Balser_GigeCamera::~Balser_GigeCamera()
{
    
}

void Balser_GigeCamera::initCamera()
{
    PylonInitialize();
    
    m_basler.RegisterImageEventHandler(this, RegistrationMode_Append, Cleanup_Delete);
    m_basler.Attach(CTlFactory::GetInstance().CreateFirstDevice(),Cleanup_Delete);
    qDebug()<<"Using device " << m_basler.GetDeviceInfo().GetModelName()<<endl;
    m_basler.Open();
    if (!m_basler.IsOpen() || m_basler.IsGrabbing())
    {
        qDebug()<<"camera open failed"<<endl;
        return;
    }
}

void Balser_GigeCamera::CloseCamera()
{
    if(m_basler.IsOpen()) {
        m_basler.DetachDevice();
        m_basler.Close();
        m_basler.DestroyDevice();
        m_ptrGrabResult.Release();
    }
}

void Balser_GigeCamera::deleteAll()
{
    //停止采集
    if(GrabOnLine_Signal) {
        StopAcquire();
    }
    //关闭摄像头
    try
    {
        CloseCamera();
        m_basler.DeregisterImageEventHandler(this);
        
        //关闭库
        qDebug() << "SBaslerCameraControl deleteAll: PylonTerminate" ;
        PylonTerminate();
    }
    catch (const Pylon::GenericException& e)
    {
        qDebug() << e.what();
    }
}

int Balser_GigeCamera::getExposureTime()
{
    return GetCamera(Type_Basler_ExposureTimeAbs);
}

void Balser_GigeCamera::setExposureTime(int time)
{
    SetCamera(Type_Basler_ExposureTimeAbs, time);
}

void Balser_GigeCamera::setGain(int value)
{
    SetCamera(Type_Basler_GainRaw, value);
}

int Balser_GigeCamera::getGain()
{
    return GetCamera(Type_Basler_GainRaw);
}

int Balser_GigeCamera::getFrameRate()
{
    return GetCamera(Type_Basler_AcquisitionFrameRateAbs);
}

void Balser_GigeCamera::setFrameRate(int value)
{
    SetCamera(Type_Basler_AcquisitionFrameRateAbs, value);
}

void Balser_GigeCamera::OneKeyAutoExTime()
{
    AutoExposureOnce(m_basler);
}

void Balser_GigeCamera::SetCamera(Balser_GigeCamera::BaslerCamera_Type index, int tmpValue)
{
    INodeMap &cameraNodeMap = m_basler.GetNodeMap();
    switch (index) {
    case Type_Basler_Freerun: {
        CEnumerationPtr  ptrTriggerSel = cameraNodeMap.GetNode ("TriggerSelector");
        ptrTriggerSel->FromString("FrameStart");
        CEnumerationPtr  ptrTrigger  = cameraNodeMap.GetNode ("TriggerMode");
#ifdef Real_Freerun
        ptrTrigger->SetIntValue(0);
#else //Software
        ptrTrigger->SetIntValue(1);
        CEnumerationPtr  ptrTriggerSource = cameraNodeMap.GetNode ("TriggerSource");
        ptrTriggerSource->FromString("Software");
#endif
    } break;
    case Type_Basler_Line1: {
        CEnumerationPtr  ptrTriggerSel = cameraNodeMap.GetNode ("TriggerSelector");
        ptrTriggerSel->FromString("FrameStart");
        CEnumerationPtr  ptrTrigger  = cameraNodeMap.GetNode ("TriggerMode");
        ptrTrigger->SetIntValue(1);
        CEnumerationPtr  ptrTriggerSource = cameraNodeMap.GetNode ("TriggerSource");
        ptrTriggerSource->FromString("Line1");
    } break;
    case Type_Basler_ExposureTimeAbs: {
        const CFloatPtr exposureTime = cameraNodeMap.GetNode("ExposureTimeAbs");
        exposureTime->SetValue(tmpValue);
    } break;
    case Type_Basler_GainRaw: {
        const CIntegerPtr cameraGen = cameraNodeMap.GetNode("GainRaw");
        cameraGen->SetValue(tmpValue);
    } break;
    case Type_Basler_AcquisitionFrameRateAbs: {
        const CBooleanPtr frameRate = cameraNodeMap.GetNode("AcquisitionFrameRateEnable");
        frameRate->SetValue(TRUE);
        const CFloatPtr frameRateABS = cameraNodeMap.GetNode("AcquisitionFrameRateAbs");
        frameRateABS->SetValue(tmpValue);
    } break;
    case Type_Basler_Width: {
        const CIntegerPtr widthPic = cameraNodeMap.GetNode("Width");
        widthPic->SetValue(tmpValue);
    } break;
    case Type_Basler_Height: {
        const CIntegerPtr heightPic = cameraNodeMap.GetNode("Height");
        heightPic->SetValue(tmpValue);
    } break;
    case Type_Basler_LineSource: {
        CEnumerationPtr  ptrLineSource = cameraNodeMap.GetNode ("LineSource");
        ptrLineSource->SetIntValue(2);
    } break;
    default:
        break;
    }
}

int Balser_GigeCamera::GetCamera(Balser_GigeCamera::BaslerCamera_Type index)
{
    INodeMap &cameraNodeMap = m_basler.GetNodeMap();
    switch (index) {
    case Type_Basler_ExposureTimeAbs: {
        const CFloatPtr exposureTime = cameraNodeMap.GetNode("ExposureTimeAbs");
        return exposureTime->GetValue();
    } break;
    case Type_Basler_GainRaw: {
        const CIntegerPtr cameraGen = cameraNodeMap.GetNode("GainRaw");
        return cameraGen->GetValue();
    } break;
    case Type_Basler_AcquisitionFrameRateAbs: {
        const CBooleanPtr frameRate = cameraNodeMap.GetNode("AcquisitionFrameRateEnable");
        frameRate->SetValue(TRUE);
        const CFloatPtr frameRateABS = cameraNodeMap.GetNode("AcquisitionFrameRateAbs");
        return frameRateABS->GetValue();
    } break;
    case Type_Basler_Width: {
        const CIntegerPtr widthPic = cameraNodeMap.GetNode("Width");
        return widthPic->GetValue();
    } break;
    case Type_Basler_Height: {
        const CIntegerPtr heightPic = cameraNodeMap.GetNode("Height");
        return heightPic->GetValue();
    } break;
    default:
        return -1;
        break;
    }
}

void Balser_GigeCamera::OnImageGrabbed(CInstantCamera &camera, const CGrabResultPtr &grabResult)
{
    m_mutexLock.lock();
    qDebug() <<"Capturest"<<endl;
    if (grabResult->GrabSucceeded())
    {
        m_ptrGrabResult = grabResult;//将捕获到的图像传递出去
        qDebug() <<"Captureok"<<endl;
        QImage CurrentImg;
        CurrentImg = CopyImgToQImage(m_ptrGrabResult);
        if(TestImg_WorkType == 1)
        {
            emit canShowImg(CurrentImg);
            //            startImgProcess(CurrentImg);
            qDebug() <<"Captureok"<<endl;
        }
        else{
            emit canShowImg(CurrentImg);
        }
    }
    
    m_mutexLock.unlock();
}

void Balser_GigeCamera::StartAcquire()
{
    
    if ( !m_basler.IsGrabbing() ){
        qDebug()<<"grabstart"<<endl;
        GrabOnLine_Signal = true;
        m_basler.StartGrabbing(GrabStrategy_LatestImageOnly,GrabLoop_ProvidedByInstantCamera);
    }
    else {
        qDebug()<<"error"<<endl;
    }
}

void Balser_GigeCamera::StartSnap()
{
    m_basler.StartGrabbing(1);
    CBaslerUniversalGrabResultPtr ptrGrabResult;
    m_basler.RetrieveResult( 5000, ptrGrabResult, TimeoutHandling_ThrowException);
    if (ptrGrabResult->GrabSucceeded())
    {
        qDebug()<<"snapok"<<endl;
        QImage CurrentImg = CopyImgToQImage(ptrGrabResult);
        emit canShowImg(CurrentImg);
        if(TestImg_WorkType == 0){
            //            startImgProcess(CurrentImg);
            TestImg_WorkType = -1;
        }
    }
}

void Balser_GigeCamera::StopAcquire()
{
    if ( m_basler.IsGrabbing()){
        GrabOnLine_Signal = false;
        m_basler.StopGrabbing();  // 停止抓取图像
    }
}

void Balser_GigeCamera::AutoExposureOnce(CBaslerUniversalInstantCamera& camera)
{
    if ( !camera.ExposureAuto.IsWritable())
    {
        cout << "The camera does not support Exposure Auto." << endl << endl;
        return;
    }
    
    camera.ExposureAuto.SetValue(ExposureAuto_Once);
    int n = 0;
    while (camera.ExposureAuto.GetValue() != ExposureAuto_Off)
    {
        ++n;
        
        //For demonstration purposes only. Wait until the image is shown.
        WaitObject::Sleep(100);
        
        //Make sure the loop is exited.
        if (n > 100)
        {
            throw TIMEOUT_EXCEPTION( "The adjustment of auto exposure did not finish.");
        }
    }
}

void Balser_GigeCamera::WorkTypeSignal(int work_type)
{
    TestImg_WorkType = work_type;
}

QImage Balser_GigeCamera::CopyImgToQImage(CGrabResultPtr ptrGrabResult)
{
    QImage Qimg;
    //格式转换
    m_formatConverter.Convert(pylonImage, ptrGrabResult);
    uchar * din = (uchar *)(pylonImage.GetBuffer()); //数据指针
    
    //单通道Momo
    if(IsMono(pylonImage.GetPixelType()))
    {
        qDebug()<<"黑白图像";
        Qimg = QImage(din, ptrGrabResult->GetWidth(), ptrGrabResult->GetHeight(), QImage::Format_Indexed8);
    }
    else
    {
        //此处可以根据相机的格式获取特定格式的彩色图像
        if(IsRGB(pylonImage.GetPixelType()))
        {
            Qimg = QImage(din, ptrGrabResult->GetWidth(), ptrGrabResult->GetHeight(), QImage::Format_RGB888);
        }
    }
    
    return Qimg;
}

4、源码下载

相机采图及相机设置部分封装成动态库，可以在UI线程调用相机类来实现相机的加载，采图及参数设置操作。
源码下载：https://download.csdn.net/dow...