基于c++和QT开发的动态人流量监测系统源码.zip

#include "widget.h" #include "ui_widget.h" #include <QBuffer> #include <QByteArray> #include <QImageReader> #include <QJsonDocument> #include <QJsonObject> #include <QThread> Widget::Widget(QWidget *parent) : QWidget(parent), ui(new Ui::Widget) { ui->setupUi(this); photograph(); //相机 initialization(); //网络 } Widget::~Widget() { delete ui; } //网络 void Widget::initialization() { manager = new QNetworkAccessManager(this); requst = new QNetworkRequest; QString request_url = "https://aip.baidubce.com/rest/2.0/image-classify/v1/body_tracking"; //请求URL QString toke = "24.6878d2808d1dd6be2a3a760c82d0979a.2592000.1570716999.282335-17208954"; //access_token QString url = request_url + "?access_token=" + toke; requst->setUrl(QUrl(url)); requst->setHeader(QNetworkRequest::ContentTypeHeader,"application/x-www-form-urlencoded"); //Content-Type connect(manager,&QNetworkAccessManager::finished,this, [=](QNetworkReply *reply) { QByteArray array = reply->readAll(); //获取信息 qDebug() << array; QJsonObject json1 = QJsonDocument::fromJson(array).object(); QString image = json1.value("image").toString(); QByteArray ba; //解析返回渲染图 ba.append(image); QByteArray ba1 = ba.fromBase64(ba); QBuffer buffer(&ba1); buffer.open(QIODevice::ReadOnly); QImageReader reader(&buffer,"jpg"); img = reader.read(); int person_num = json1.value("person_num").toInt(); QJsonObject object = json1.value("person_count").toObject(); qDebug() << object; int in = object.value("in").toInt(); int out = object.value("out").toInt(); ins += in; outs += out; QString str = "当前人数：" + QString::number(person_num); //返回人数 ui->label_2->setText(str); QString str1 = "进入人数：" + QString::number(ins); ui->label_3->setText(str1); QString str2 = "离开人数：" + QString::number(outs); ui->label_4->setText(str2); }); } //发送请求 void Widget::sendHTTP() { QByteArray ba; QBuffer buf(&ba); Image.save(&buf, "jpg"); QByteArray SendData = ""; SendData.append("&dynamic=true"); SendData.append("&case_id=1"); SendData.append("&case_init=false"); SendData.append("&image="); SendData.append(ba.toBase64().toPercentEncoding()); SendData.append("&show=true"); SendData.append("&area=1,1,700,1,700,719,1,719"); qDebug() << SendData; manager->post(*requst,SendData); } //相机初始化 void Widget::photograph() { this->resize(640,450); //设置窗口大小 camera = new QCamera(this); //系统摄像头设备 finder = new QCameraViewfinder(this); //摄像头取景器部件 capture = new QCameraImageCapture(camera); //截图部件 timer = new QTimer(this); ui->verticalLayout->addWidget(finder); //在布局器上添加finder ui->label->setMaximumSize(0,0); //设置照片初始化大小 ui->pushButton_2->setEnabled(false); Switch = false; Position = 0; connect(timer,&QTimer::timeout,this,&Widget::photo); //监听定时器 connect(capture,&QCameraImageCapture::imageCaptured,this, &Widget::cameraImageCaptured); //图像捕获 capture->setCaptureDestination(QCameraImageCapture::CaptureToFile); //设置要捕获的对象 camera->setCaptureMode(QCamera::CaptureStillImage); //摄像机配置为静止帧捕获。 camera->setViewfinder(finder); //设置取景器 } //拍照 void Widget::photo() { capture->capture(); //拍照 sendHTTP(); display(); //显示 } //获得图像 void Widget::cameraImageCaptured(int id, QImage image) { Image = image; } //打开摄像头 void Widget::on_pushButton_clicked() { if(!Switch) { camera->start(); //打开摄像头 ui->pushButton->setText("关闭摄像头"); ui->pushButton_2->setEnabled(true); //打开button Switch = true; } else { camera->stop(); ui->pushButton->setText("打开摄像头"); ui->pushButton_2->setEnabled(false); Switch = false; // connection = false; } } //定时拍照 void Widget::on_pushButton_2_clicked() { if(!timer->isActive()) { timer->start(200); ui->pushButton_2->setText("停止"); } else { timer->stop(); ui->pushButton_2->setText("开始"); } } //滑动切换 void Widget::on_horizontalSlider_sliderMoved(int position) { Position = position; display(); } //显示 void Widget::display() { ui->horizontalSlider->setMinimum(0); ui->horizontalSlider->setMaximum(this->width()); ui->label->setMaximumSize(Position * (16/9),Position); QPixmap pixmap = QPixmap::fromImage(img ); QPixmap fitpixmap = pixmap.scaled(Position * (16/9),Position, Qt::KeepAspectRatio, Qt::SmoothTransformation); // 按比例缩放 ui->label->setPixmap(fitpixmap); qDebug() << Position; }