基于Qt的图像采集系统

硬件

Point Gray Camera

型号：FL3-U3-13S2C-CS

参数

Sony IMX035 CMOS, 1/3", 3.63 µm
Rolling Shutter
1328x1048 at 120 FPS

USB3.0

系统及环境

Windows 7 64bit

Qt 5.1

驱动：FlyCapture v2.5 Release 4 - Windows 64bit

硬件连接

将相机直接接到电脑的USB3.0接口上就可以了。

程序功能

调用摄像头拍照，并在窗口中显示结果拍照结果。

开发的过程中主要是参考官方的文档，在sdk安装的文件夹里就有。

代码清单

代码结构

很简单，就一个类。

首先要在.pro文件中包含头文件和库

INCLUDEPATH += "C:/Program Files/Point Grey Research/FlyCapture2/include"

LIBS += "C:\Program Files\Point Grey Research\FlyCapture2\lib64\FlyCapture2.lib"

main.cpp

#include "mainwindow.h"
#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    MainWindow w;
    w.show();
    return a.exec();
}

初始化一个MainWindow，然后显示，没什么好说的。

mainwindows.h

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <FlyCapture2.h>
#include <iostream>
#include <QLabel>
#include <QAction>
#include <QStatusBar>
#include <QMessageBox>
#include <QMenu>
#include <QMenuBar>
using namespace std;
using namespace FlyCapture2;
class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = 0);
    void printCameraInfo();
    ~MainWindow();
private:
    QLabel *imageLabel;
    QMenu *operationMenu;
    QMenu *aboutMenu;
    QMenu *cameraMenu;
    QAction *startAction;
    QAction *stopAction;
    QAction *aboutAction;
    QAction *cameraInfoAction;
    QLabel *msgLabel;
    QLabel *about;

    void createActions();
    void createMenus();
    void printError(Error e);
    void getCameraInfo();

     PGRGuid guid;
     Error error;
     Camera cam;
     CameraInfo camInfo;

public slots:
    void slotAbout();
    int slotStart();
    void slotStop();
    void slotShowCameraInfo();

};

#endif // MAINWINDOW_H

首先要包含 FlyCapture2.h 这个头文件，然后定义好窗体的menu，action等等，还有操作相机的几个相关的私有成员。

main.cpp

#include "mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
    this->setGeometry(100,100,1000,768);
    this->setWindowTitle(tr("FlyCapture View"));

    //状态栏设定
    msgLabel=new QLabel;
    msgLabel->setMinimumSize(msgLabel->sizeHint());
    this->statusBar()->addWidget(msgLabel);

    this->createActions();
    this->createMenus();

    imageLabel = new QLabel;
    imageLabel->setBackgroundRole(QPalette::Base);
    imageLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);
    imageLabel->setScaledContents(true);

    QPixmap image(":/images/images/monster.png");
    imageLabel->setPixmap(image);
    this->setCentralWidget(imageLabel);

//Initialization of camera
    BusManager busMgr;

    error = busMgr.GetCameraFromIndex(0, &guid);
    if (error != PGRERROR_OK)
    {
        printError( error );
        //return -1;
    }

    const int k_numImages = 10;

    // Connect to a camera
    error = cam.Connect(&guid);
    if (error != PGRERROR_OK)
    {
        printError( error );
       // return -1;
    }
    // Get the camera information

    error = cam.GetCameraInfo(&camInfo);
    if (error != PGRERROR_OK)
    {
        printError( error );
        //return -1;
    }

}

MainWindow::~MainWindow()
{

}

void MainWindow::createActions()
{
    this->aboutAction = new QAction(tr("&About"), this);
    this->aboutAction->setStatusTip(tr("About author."));
    this->connect(aboutAction, SIGNAL(triggered()), this, SLOT(slotAbout()));

    this->startAction = new QAction(tr("&Start"), this);
    this->startAction->setStatusTip(tr("Start capture."));
    this->connect(startAction, SIGNAL(triggered()), this, SLOT(slotStart()));

    this->stopAction = new QAction(tr("&Stop"), this);
    this->stopAction->setStatusTip(tr("Stop capture."));
    this->connect(stopAction, SIGNAL(triggered()), this, SLOT(slotStop()));

    this->cameraInfoAction = new QAction(tr("&CameraInfo"), this);
    this->cameraInfoAction->setStatusTip(tr("Camera Information."));
    this->connect(cameraInfoAction, SIGNAL(triggered()), this, SLOT(slotShowCameraInfo()));

}

void MainWindow::createMenus()
{
    this->operationMenu = this->menuBar()->addMenu(tr("&Operation"));
    this->operationMenu->addAction(startAction);
    this->operationMenu->addAction(stopAction);

    this->aboutMenu = this->menuBar()->addMenu(tr("&About"));
    this->aboutMenu->addAction(aboutAction);

    this->cameraMenu = this->menuBar()->addMenu(tr("&Camera"));
    this->cameraMenu->addAction(cameraInfoAction);
}

void MainWindow::slotAbout()
{
    QMessageBox msg(this);
    msg.setWindowTitle("About");
    msg.setText(tr("Version:1.0  Author:silangquan@gmail.com"));
    msg.exec();
}

int MainWindow::slotStart()
{

    // Start capturing images
    error = cam.StartCapture();
    if (error != PGRERROR_OK)
    {
        printError( error );
        return -1;
    }

    Image rawImage;

    error = cam.RetrieveBuffer( &rawImage );
    if (error != PGRERROR_OK)
    {
        printError( error );
        //   continue;
    }

    // Create a converted image
    Image convertedImage;

    // Convert the raw image
    error = rawImage.Convert( PIXEL_FORMAT_RGB, &convertedImage );
    if (error != PGRERROR_OK)
    {
        printError( error );
        return -1;
    }

    // Save the image. If a file format is not passed in, then the file
    // extension is parsed to attempt to determine the file format.
    error = convertedImage.Save( "Test.jpg");
    if (error != PGRERROR_OK)
    {
        printError( error );
        return -1;
    }
    //   }

    // Stop capturing images
    error = cam.StopCapture();
    if (error != PGRERROR_OK)
    {
        printError( error );
        return -1;
    }

    // Disconnect the camera
    error = cam.Disconnect();
    if (error != PGRERROR_OK)
    {
        printError( error );
        return -1;
    }

    QPixmap image("Test.jpg");
    imageLabel->setPixmap(image);
    cout<<"Captured!"<<endl;
    return 0;

}

void MainWindow::slotStop()
{
    cout<<"Stop!"<<endl;
}

void MainWindow::slotShowCameraInfo()
{
    QMessageBox msg(this);
    msg.setWindowTitle("Camera Informations");
    msg.setText(QString("Serial number - %1\nCamera model - %2\nCamera vendor - %3\nSensor - %4\nResolution - %5\nFirmware version - %6\nFirmware build time - %7\n\n")
                .arg(camInfo.serialNumber).arg(camInfo.modelName).arg(camInfo.vendorName).arg(camInfo.sensorInfo).arg(camInfo.sensorResolution)
                .arg(camInfo.firmwareVersion).arg(camInfo.firmwareBuildTime));

    msg.exec();
}

void MainWindow::printError(Error e)
{
    e.PrintErrorTrace();
}

主要是函数，槽，界面布局的实现。

最终效果：

源码下载