Win10环境下通过Qt(c++)结合dlib库，实现人脸识别并统计现图像中人脸数量，ui界面化

#include "widget.h" #include "ui_widget.h" #include <dlib/image_processing/frontal_face_detector.h> #include <dlib/gui_widgets.h> #include <dlib/image_io.h> #include <iostream> #include <QFileDialog> #include <QPixmap> using namespace std; using namespace dlib; int TestFaceDetect(const char *filename) { frontal_face_detector detector = get_frontal_face_detector(); array2d <unsigned char> img; load_image(img, filename); std::vector<rectangle> dets = detector(img); return dets.size(); } Widget::Widget(QWidget *parent) : QWidget(parent) , ui(new Ui::Widget) { ui->setupUi(this); } Widget::~Widget() { delete ui; } void Widget::on_pushButton_clicked() { fileName = QFileDialog::getOpenFileName(this, QStringLiteral("选择文件对话框！"),"F:",QStringLiteral("图片文件(*png *jpg);;""本本文件(*txt)")); std::string str = fileName.toStdString(); const char *filename = str.c_str(); int num = TestFaceDetect(filename); pic = QPixmap(fileName).scaled(ui->label->width(),ui->label->height()); ui->label->setPixmap(pic); ui->label_2->setText(QString::number(num)); } void Widget::resizeEvent(QResizeEvent *event) { Q_UNUSED(event); //取消unused警告 pic = QPixmap(fileName).scaled(ui->label->width(),ui->label->height()); ui->label->setPixmap(pic); }