C语言Qt5+opencv4——基础界面、读图、显示视频、显示本地文件

柔情只为你懂 2023-01-22 10:46 28阅读 0赞

### C语言Qt5——基础界面、读图、显示视频、显示本地文件 ###

*  先上效果图
 *  源码备份
 *   *  配置文件.pro
     *  mainwindow.h

# 先上效果图 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hb19odWlfZmVp_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hb19odWlfZmVp_size_16_color_FFFFFF_t_70 1]

# 源码备份 #

## 配置文件.pro ##

#-------------------------------------------------
    #
    # Project created by QtCreator 2021-05-15T15:38:21
    #
    #-------------------------------------------------
    
    QT       += core gui
    
    greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
    
    TARGET = 21_0515_Qt_test3
    TEMPLATE = app
    
    # The following define makes your compiler emit warnings if you use
    # any feature of Qt which has been marked as 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 you use 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
    
    CONFIG += c++11
    INCLUDEPATH+= D:/Opencv420/opencv420_build/install/include/opencv2 \
                       D:/Opencv420/opencv420_build/install/include
    
    
    LIBS+=D:/Opencv420/opencv420_build/install/x64/vc14/lib/opencv_*d.lib
    
    SOURCES += \
            main.cpp \
            mainwindow.cpp
    
    HEADERS += \
            mainwindow.h
    
    # Default rules for deployment.
    qnx: target.path = /tmp/$${ TARGET}/bin
    else: unix:!android: target.path = /opt/$${ TARGET}/bin
    !isEmpty(target.path): INSTALLS += target

## mainwindow.h ##

#if defined(_MSC_VER) && (_MSC_VER >= 1600)
    # pragma execution_character_set("utf-8")
    #endif
    #ifndef MAINWINDOW_H
    #define MAINWINDOW_H
    
    /*Qt相关*/
    #include <QMainWindow>
    #include <QWidget>
    #include <QPushButton>
    #include <QFileDialog>
    #include <QLabel>
    #include<QVBoxLayout>//窗口布局，垂直变化
    #include<QHBoxLayout>//窗口布局，水平变化
    #include<QGridLayout>//格子窗口
    #include<QLabel>//提示文字
    #include<QTimer>//定时器，用于显示图像
    
    #include<QTextCodec>
    #include<QMessageBox>
    
    #include <opencv2/core.hpp>
    #include <opencv2/opencv.hpp>
    #include <time.h>
    #include <ctime>
    #include <iostream>
    #include <string>
    #include<opencv2/opencv.hpp>
    #include <iostream>
    #include <fstream>
    #include <stdlib.h> //
    #include <time.h> //
    #include <opencv2/core/core.hpp>
    #include <opencv2/highgui/highgui.hpp>
    #include <opencv2/imgproc/imgproc.hpp>
    #include <opencv2/objdetect/objdetect.hpp>
    #include <opencv2/ml/ml.hpp>
    #include<opencv2\opencv.hpp>
    #include <opencv2\imgproc\types_c.h>
    
    
    using namespace cv;
    using namespace std;
    
    class MainWindow : public QMainWindow
    { 
        Q_OBJECT
    public:
        explicit MainWindow(QWidget *parent = nullptr);
            ~MainWindow();
    private:
        /*控件*/
        QPushButton *MainButton_1;
        QPushButton *MainButton_2;
        QPushButton *MainButton_3;
        QPushButton *MainButton_4;
        QLabel      *Label_1;
    
        /*opencv相关*/
        cv::Mat frame;
        cv::VideoCapture capture;
        QImage  image;
        QTimer *timer1, *timer2;
        double rate; //FPS
        cv::VideoWriter writer;   //make a video record
    
    private slots:
        void on_pushButton_open_picture_clicked();
        void on_pushButton_open_camera_clicked();
        void on_pushButton_open_local_video_clicked();
        void on_pushButton_start_detetion_clicked();
        void nextFrame_yuanshitu();
    };
    
    #endif // MAINWINDOW_H

完整代码见：[C语言Qt5+opencv4——基础界面、读图、显示视频、显示本地文件][C_Qt5_opencv4]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hb19odWlfZmVp_size_16_color_FFFFFF_t_70]: /images/20221020/5cae5d3ecc764c898245a2e9bc6cf9c4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hb19odWlfZmVp_size_16_color_FFFFFF_t_70 1]: /images/20221020/701eb1fbba0c46fd83de9bc06b2b2e1c.png
[C_Qt5_opencv4]: https://www.toutiao.com/i6969008826586825253/