基于Qt调用百度AI库进行人脸检测的测试代码

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已于 2024-05-15 09:08:56 修改 · 641 阅读

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#qt #c++ #计算机视觉 #人工智能

于 2024-05-15 08:55:05 首次发布

根据B站@井上远子_的“基于Qt的图像识别项目”写的测试代码。该代码为连续检测，但后来新申请的百度智能云账号赠送的调用次数有限制，连续检测可能很短的时间内就把一个月的赠送量用完了，建议可以修改为非连续调用，比如使用UI上的按钮单次触发。

1、UI

2、imageTest.pro

QT       += core gui multimedia multimediawidgets network

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    imagetest.cpp \
    worker.cpp

HEADERS += \
    imagetest.h \
    worker.h

FORMS += \
    imagetest.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

3、imagetest.h

#ifndef IMAGETEST_H
#define IMAGETEST_H

#include <QWidget>

#include <QCamera>
#include <QCameraViewfinder>
#include <QCameraImageCapture>
#include <QTimer>
#include <QNetworkAccessManager>
#include <QUrl>
#include <QUrlQuery>
#include <QSslConfiguration>
#include <QNetworkReply>
#include <QJsonParseError>
#include <QJsonDocument>
#include <QJsonObject>
#include <QBuffer>
#include <QJsonArray>
#include <QThread>
#include "worker.h"
#include <QPainter>
#include <QCameraInfo>

QT_BEGIN_NAMESPACE
namespace Ui { class ImageTest; }
QT_END_NAMESPACE

class ImageTest : public QWidget
{
    Q_OBJECT

public:
    ImageTest(QWidget *parent = nullptr);
    ~ImageTest();

signals:
    void begainWork(QImage img, QThread *childThread);     // 通知子线程干活

public slots:
    void showCamera(int id, QImage preview);    // 接收拍好照片的槽函数
    void takePicture();                         // 拍照按钮槽函数
    void tokenReply(QNetworkReply *reply);      // 网络请求回复槽函数
    void beginFaceDetect(QByteArray postData, QThread *overThread);  // 开始人脸识别
    void imgReply(QNetworkReply *reply);        // 图像识别网络请求回复槽函数

    void prePostData();
    void pickCamera(int idx);

private:
    Ui::ImageTest *ui;

    QCamera* camera;                        // 相机对象
    QCameraViewfinder* finder;              // 相机取景器对象
    QCameraImageCapture* imageCapture;      // 图像捕捉对象
    QTimer* refreshTimer;                   // 连续拍照定时器
    QTimer* netTimer;                       // 网络是被请求定时器
    QImage img;

    QNetworkAccessManager* tokenManager;    // token获取网络访问管理
    QNetworkAccessManager* imgManager;      // 图像识别网络访问管理
    QSslConfiguration sslConfig;            // ssl配置
    QString accessToken;

    QThread *childThread;

    double faceTop;
    double faceLeft;
    double faceWidth;
    double faceHeight;

    double age;
    QString gender;
    int mask;
    double beauty;

    QList<QCameraInfo> cameraInfoList;

    int latestTime;

};
#endif // IMAGETEST_H

4、imagetest.c</