效果图
目录文件
camerathread.h 功能实现全写在.h里了
class CameraThread : public QThread
{
Q_OBJECT
public:
CameraThread()
{
//打开序号为0的摄像头
m_cap.open(0);
if (!m_cap.isOpened()) {
qDebug() << "Error: Cannot open camera";
}
//判断是否有文件,人脸识别模型,检测和识别用的
if(!m_cascada.load("D:/research/CV/Opencv/haarcascade_frontalface_alt2.xml"))
{
QMessageBox::information(NULL,"失败", "人脸识别模型装载失败");
}
//实例化定时器,子线程中数据传输到中线程并显示出来
m_timer = new QTimer(this);
//绑定时间信号及获取图像帧的图像
connect(m_timer,SIGNAL(timeout()),this,SLOT(readFarme()));
//大概每秒24帧
//开始定时器
m_timer->start(42);
//打卡模块
// 定义 FisherFaceRecognizer 模型,训练用的模型
m_model = LBPHFaceRecognizer::create();
// 加载训练好的模型,自己训练的模型
m_model->read("MyFaceLBPHModel.xml");
if (m_model.empty())
{
qDebug() << "Error: Failed to load model!";
}
else
{
qDebug() << "Model loaded successfully!";
}
//录入时候的定时器,录入大概几秒,获取二十张灰色图像并保存,等待训练
//实例化定时器
m_Very_timer = new QTimer(this);
//数据库的初始化部分
//链接数据库
m_db = QSqlDatabase::addDatabase("QMYSQL");
m_db.setHostName("localhost"); // 主机名
m_db.setDatabaseName("face"); // 数据库名
m_db.setUserName("root"); // 用户名
m_db.setPassword("31415926"); // 密码
}
~CameraThread()
{
//释放摄像头
m_cap.release();
}
void run() override
{
}
//图像数据类型转换
QImage MatImageToQt(const cv::Mat &src)
{
if(src.type() == CV_8UC1)
{
QImage qImage(src.cols,src.rows,QImage::Format_Indexed8);
qImage.setColorCount(256);
for(int i = 0; i < 256; i ++)
{
qImage.setColor(i,qRgb(i,i,i));
}
uchar *pSrc = src.data;
for(int row = 0; row < src.rows; row ++)
{
uchar *pDest = qImage.scanLine(row);
memcmp(pDest,pSrc,src.cols);
pSrc += src.step;
}
return qImage;
}
else if(src.type() == CV_8UC3)
{
const uchar *pSrc = (const uchar*)src.data;
QImage qImage(pSrc,src.cols,src.rows,src.step,QImage::Format_RGB888);
return qImage.rgbSwapped();
}
else if(src.type() == CV_8UC4)
{
const uchar *pSrc = (const uchar*)src.data;
QImage qImage(pSrc, src.cols, src.rows, src.step, QImage::Format_ARGB32);
return qImage.copy();
}
else
{
return QImage();
}
}
//人脸检测
void Check(Mat &image, Mat &gray)
{
//直方图均匀化(改善图像的对比度和亮度)
Mat equalizedImg;
equalizeHist(gray,equalizedImg);
int flags = CASCADE_SCALE_IMAGE; //检测多个人
Size minFeatureSize(30,30);
float searchScaleFactor = 1.1f; //默认1.1倍
int minNeighbors = 4;
m_cascada.detectMultiScale(equalizedImg,m_faces,searchScaleFactor,minNeighbors,flags,minFeatureSize);
m_current_people = m_faces.size();
//检测到的个数
//qDebug() << "检测到人脸的个数:" << m_faces.size() << endl;
QString str;
str.setNum(m_faces.size());
//qDebug() << m_current_people << endl;
// //画矩形框
Mat face;
// for(int i = 0; i < m_faces.size(); i++)
// {
// if(m_faces[i].height > 0 && m_faces[i].width >0 )
// {
// face = gray(m_faces[i]);
// m_text_lb = Point(m_faces[i].x,m_faces[i].y);
// rectangle(image, m_faces[i], Scalar(50, 50, 150), 2, 8, 0); //线太细了会导致在QLabel上面丢失线框
// }
// int iP = Predict(image);
// }
// 画矩形框和显示姓名
for(int i = 0; i < m_faces.size(); i++)
{
string name; // 从数据库中获取姓名
if(m_faces[i].height > 0 && m_faces[i].width >0 )
{
face = gray(m_faces[i]);
m_text_lb = Point(m_faces[i].x,m_faces[i].y);
rectangle(image, m_faces[i], Scalar(50, 50, 150), 2, 8, 0); // 画矩形框
//灰度图
Mat tImagGray;
cvtColor(image, tImagGray, COLOR_BGR2GRAY);
// 识别人脸
int id = Predict(tImagGray);
if (!m_db.open())
{
qDebug() << "Failed to connect to database:" ;
}
// 执行查询语句
QSqlQuery query;
QString queryString = QString("SELECT name FROM staff_info WHERE num = %1").arg(id);
if (!query.exec(queryString))
{
qDebug() << "Failed to execute query:";
m_db.close();
}
// 处理查询结果
if (query.next())
{
name = query.value(0).toString().toUtf8().constData();
m_db.close();
}
else
{
m_db.close();
name = "Unknown";
}
}
qDebug() << name.data();
// 在图像上显示姓名
Point textPosition(m_faces[i].x, m_faces[i].y - 10); // 文本位置在矩形框上方一点
putText(image, name.data(), textPosition, FONT_HERSHEY_SIMPLEX, 0.5, Scalar(255, 255, 255), 1, LINE_AA);
}
m_faces.clear();
}
// 裁剪出的脸部区域的图像
cv::Mat cropFace(const cv::Mat& faceImg, const cv::Rect& faceRect) {
// 不再进行颜色空间转换,直接使用输入的 faceImg
cv::Mat frame_gray = faceImg;
// 确保矩形区域在图像范围内
if (faceRect.x >= 0 && faceRect.y >= 0 &&
faceRect.x + faceRect.width <= frame_gray.cols &&
faceRect.y + faceRect.height <= frame_gray.rows)
{
// 使用区域选择功能提取矩形区域
cv::Mat faceROI = frame_gray(faceRect).clone(); // 使用 clone() 来复制图像区域
return faceROI;
}
else
{
// 处理矩形区域超出图像范围的情况
// 这里可以选择合适的处理方式,比如调整矩形区域的大小或者放弃处理该脸部区域
return cv::Mat();
}
}
// 在文本文件末尾添加数据
void appendToTextFile(const QString& filename, const QString& data)
{
QFile file(filename);
if (file.open(QIODevice::Append | QIODevice::Text))
{
QTextStream out(&file);
out << data << "\n";
file.close();
}
else
{
qDebug() << "Failed to open file for appending.";
}
}
//预测功能,检测输入的图像中的人脸是否在训练集中
int Predict(Mat src_image)
{
Mat face_test;
int ispredict = 0;
//截取的ROI人脸尺寸调整
if (src_image.rows >= 120)
{
//改变图像大小,使用双线性差值
resize(src_image, face_test, Size(92, 112));
}
//判断是否正确检测ROI
if (!face_test.empty())
{
//测试图像应该是灰度图
ispredict = m_model->predict(face_test);
}
//cout << ispredict << endl;
return ispredict;
}
signals:
//向主线程传输图像
void Set_image(QImage *image);
//打卡之后设置ui部分和数据库部分
void Send_Card_Data(QSqlDatabase *m_db,QString num);
public slots:
//摄像头读取函数
void readFarme()
{
//读取一帧图像
m_cap.read(m_src_image) ;
//处理一下数据,人脸检测
//生成灰度图
Mat dst_gray;
cvtColor(m_src_image, dst_gray, COLOR_BGR2GRAY);
Check(m_src_image, dst_gray);
//转换图像数据类型
QImage imag = MatImageToQt(m_src_image);
//发送图像
Set_image(&imag);
}
//执行二十次检测人脸并保存下来的功能
void Verity()
{
//判断目前摄像头中的脸有几个
if (!m_facenum.isEmpty())
{
//如果目前只有一个人
if(m_current_people == 1)
{
qDebug() << m_executionCount;
//裁剪出人脸区域
Mat faceROI = cropFace(m_src_image, m_faces[0]);
if (!faceROI.empty())
{
// 调整裁剪后的脸部图像大小
cv::Mat resizedFace;
cv::resize(faceROI, resizedFace, cv::Size(92, 112));
// 将调整大小后的脸部图像存储在 m_src_image 中
m_src_image = resizedFace.clone();
} else
{
qDebug() << "裁剪后的脸部图像为空! ";
}
//存储的地址
QString dir_str = "D:\\research\\CV\\Opencv\\facedata\\" + m_facenum + "\\" + QString::number(m_executionCount) + ".jpg";
//用来判断这个地址的文件夹是否存在
QString is_dir = "D:\\research\\CV\\Opencv\\facedata\\" + m_facenum;
qDebug() << dir_str;
QDir dir(is_dir);
if (!dir.exists())
{
if (!dir.mkpath("."))
{
qDebug() << "default ";
}
}
//扣的脸部的图像如果不为空
if (!faceROI.empty())
{
string filename = dir_str.toStdString();
// 将彩色图像转换为灰度图像
cv::Mat frame_gray;
cv::cvtColor(faceROI, frame_gray, cv::COLOR_BGR2GRAY);
//存储图像
imwrite(filename, frame_gray);
//在存储训练集需要的图片的地址的txt里也更新地址
QString csvsave = "D:/research/CV/Opencv/facedata/" + m_facenum + "/" + QString::number(m_executionCount) + ".jpg" + ";" + m_facenum ;
//存放要训练的模型的图片的地址的txt
QString csvfilename = "D:\\research\\CV\\Opencv\\at.txt";
//添加数据
appendToTextFile(csvfilename, csvsave);
m_executionCount++; // 每次执行计数器加一
} else
{
qDebug() << "脸部图像为空,无法写入文件! ";
}
//存储20张之后
if (m_executionCount >= 20)
{
m_executionCount = 0;
m_Very_timer->stop();
}
}
}
else
{
QMessageBox::about(NULL, "提示", "请输入工号!");
m_executionCount = 0;
m_Very_timer->stop();
//delete m_Very_timer;
}
}
//录入脸
void Set_Verity_face(QString facenum,QString facename)
{
m_facenum = facenum;
m_facename = facename;
qDebug()<< QSqlDatabase::drivers();
//判断数据库是否开着
if (!m_db.open())
{
qDebug() << "Failed to connect to database:" ;
} else
{
qDebug() << "Connected to database!";
}
//查找全部,看数量以便添加id
QSqlQuery countQuery("SELECT COUNT(*) FROM staff_info");
if (countQuery.exec() && countQuery.next())
{
int rowCount = countQuery.value(0).toInt(); // 获取数据条数
int newId = rowCount + 1; // 新的 ID 就是数据条数加一
QSqlQuery query;
query.prepare("INSERT INTO staff_info (num, id, name) VALUES (:facenum, :faceid, :facename)");
query.bindValue(":facenum", m_facenum);
query.bindValue(":faceid", newId); // 使用新的 ID
query.bindValue(":facename", m_facename);
if (query.exec())
{
qDebug() << "Data inserted into database successfully!";
}
else
{
qDebug() << "Failed to insert data into database:" ;
}
}
else
{
qDebug() << "Failed to retrieve row count from database:" ;
}
//关闭数据库
m_db.close();
qDebug() << "开始录入\n";
//绑定时间信号及获取图像帧的图像
connect(m_Very_timer, SIGNAL(timeout()), this, SLOT(Verity()));
//开始定时器
m_Very_timer->start(200);
}
//设置打卡部分
void Set_Card()
{
Mat gray;
cvtColor(m_src_image, gray, CV_BGR2GRAY); // 将输入图像转换为灰度图像
vector<Rect> faces; // 存放检测到的人脸矩形的向量容器
// 使用级联分类器检测人脸
m_cascada.detectMultiScale(gray, faces, 1.1, 4, 0, Size(30, 30), Size(500, 500));
// 遍历检测到的每张人脸
for (size_t i = 0; i < faces.size(); i++)
{
Rect faceRect = faces[i]; // 获取当前人脸的矩形框
// 从灰度图像中提取当前人脸区域
Mat faceROI = gray(faceRect);
// 检查人脸区域是否为空
if (!faceROI.empty())
{
// 调用 Predict 函数对人脸进行预测
int temp = Predict(faceROI);
qDebug() << "预测结果:" << temp;
// 发送打卡数据,然后让主线程在数据库中查找
Send_Card_Data(&m_db,QString::number(temp));
}
}
faces.clear();
}
private:
//声明opencv的视频类
cv::VideoCapture m_cap;
//更新显示的定时器
QTimer *m_timer;
//录入的定时器
QTimer *m_Very_timer;
//声明Mat类图像变量,存储当前摄像头前的图像
cv::Mat m_src_image;
//检测的分类器
CascadeClassifier m_cascada;
//矩形框的点
Point m_text_lb;
//人脸个数
vector<Rect> m_faces;
// 声明一个录入计数器变量
int m_executionCount = 0;
//工号和姓名
QString m_facenum;
QString m_facename;
//识别的模型
Ptr<LBPHFaceRecognizer> m_model;
//当前镜头前识别出的人数
int m_current_people = 0;
//数据库
QSqlDatabase m_db;
};
#endif // CAMERATHREAD_H
faceverify.cpp
#include "faceverify.h"
#include "ui_faceverify.h"
#include <QDebug>
#include <QCamera> //管理摄像头的大类
#include <QCameraInfo> //管理摄像头的设备表
#include <QCameraViewfinder> //管理摄像头显示区域
#include <QCameraImageCapture> //管理图片
#include <QDateTime> //管理时间
#include <QString> //管理字符串
#include "verityface.h"
#pragma execution_character_set("utf-8")
FaceVerify::FaceVerify(QWidget *parent)
: QWidget(parent)
, ui(new Ui::FaceVerify)
{
ui->setupUi(this);
}
FaceVerify::~FaceVerify()
{
delete m_cthread;
delete ui;
}
void FaceVerify::Get_image(QImage *image)
{
//设置图片大小和label的长宽一致
QImage timage = image->scaled(ui->Camera->width(), ui->Camera->height(),Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
ui->Camera->setPixmap(QPixmap::fromImage(timage));
}
//打开摄像头
void FaceVerify::on_pushButton_Open_Camera_clicked()
{
if(ui->pushButton_Open_Camera->text() == "打开摄像头")
{
m_cthread = new CameraThread();
connect(m_cthread, &CameraThread::Set_image, this, &FaceVerify::Get_image);
ui->pushButton_Open_Camera->setText("关闭摄像头");
}
else
{
disconnect(m_cthread, &CameraThread::Set_image, this, &FaceVerify::Get_image);
delete m_cthread;
m_cthread = nullptr;
ui->Camera->clear();
ui->pushButton_Open_Camera->setText("打开摄像头");
}
}
//打卡
void FaceVerify::on_pushButton_Card_clicked()
{
// 先断开之前的连接
disconnect(this, &FaceVerify::Send_Card, m_cthread, &CameraThread::Set_Card);
disconnect(m_cthread, &CameraThread::Send_Card_Data, this, &FaceVerify::Show_Data);
// 连接信号和槽
connect(this, &FaceVerify::Send_Card, m_cthread, &CameraThread::Set_Card);
connect(m_cthread, &CameraThread::Send_Card_Data, this, &FaceVerify::Show_Data);
// 发送信号
emit Send_Card();
}
//打卡数据显示
void FaceVerify::Show_Data(QSqlDatabase *m_db,QString num)
{
if (!m_db->open())
{
qDebug() << "Failed to connect to database:";
}
else
{
qDebug() << "Connected to database!";
// 执行检查并插入数据
QSqlQuery query;
query.prepare("SELECT * FROM record_info WHERE num = :facenum AND DATE(mtime) = CURDATE()");
query.bindValue(":facenum", num);
if (query.exec())
{
if (query.next())
{
// 如果有记录,表示今天已经签到
QMessageBox::information(NULL, tr("提示 "), tr("今天已签到 "));
// 读取数据库中的数据并显示在textEdit_data中
QString data;
QSqlRecord record = query.record();
int numField = record.indexOf("num"); // 获取字段索引
int timeField = record.indexOf("mtime");
// 遍历查询结果
do
{
QString num = query.value(numField).toString(); // 获取编号
QString time = query.value(timeField).toDateTime().toString("yyyy-MM-dd hh:mm:ss"); // 获取时间
data += "编号: " + num + ", 时间: " + time + "\n";
} while (query.next());
// 将数据显示在textEdit_data中
ui->textEdit_data->setText(data);
}
else
{
QDateTime currentDateTime = QDateTime::currentDateTime();
QString currentTimeString = currentDateTime.toString("yyyy-MM-dd hh:mm:ss");
qDebug() << "Current time:" << currentTimeString;
// 如果没有记录,表示今天还未签到,执行插入操作
query.prepare("INSERT INTO record_info (num, id, mtime) VALUES (:facenum, :faceid, :facemtime)");
query.bindValue(":facenum", num);
query.bindValue(":faceid", num); // 使用相同的 num 作为 id
query.bindValue(":facemtime", currentTimeString);
if (query.exec())
{
QMessageBox::information(NULL, tr("提示 "), tr("签到成功 "));
}
else
{
QMessageBox::critical(NULL, tr("错误 "), tr("签到失败: ") ); // 显示错误信息
}
}
}
else
{
QMessageBox::critical(NULL, tr("错误"), tr("查询数据失败: "));
}
// 关闭数据库连接
m_db->close();
}
}
//录入人脸
void FaceVerify::on_pushButton_face_clicked()
{
//打开录入界面
m_verifity = new VerityFace();
connect(m_verifity, &VerityFace::Send_Face, this, &FaceVerify::GetFaceNum);
m_verifity->show();
}
//训练模型
void FaceVerify::on_pushButton_Train_clicked()
{
m_train = new train();
connect(m_train, &train::finished, this, &FaceVerify::Train_Finish);
m_train->run();
}
//模型训练完
void FaceVerify::Train_Finish()
{
delete m_train;
QMessageBox::information(NULL,"训练", "训练完成");
}