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基于QT的一个简易的安防

时间:2014-06-28 12:08:06      阅读:314      评论:0      收藏:0      [点我收藏+]

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工程描述

  1. opencv2.4.8
  2. QT5

背景建模后,当有异物入侵时,把入侵的帧写到视频文件

使用BackgroundSubtractorMOG2背景建模

程序基于QT对话框

.pro

#-------------------------------------------------
#
# Project created by QtCreator 2014-06-19T16:00:40
# #------------------------------------------------- QT += core gui greaterThan(QT_MAJOR_VERSION, 4): QT += widgets TARGET = opencvqt TEMPLATE = app INCLUDEPATH += f:/opencv/build/include/opencv INCLUDEPATH += f:/opencv/build/include/opencv2 INCLUDEPATH += f:/opencv/build/include LIBS += -Lf:/opencv/build/x86/vc11/lib -lopencv_core248d -lopencv_highgui248d -lopencv_imgproc248d -lopencv_features2d248d -lopencv_calib3d248d -lopencv_contrib248d -lopencv_flann248d -lopencv_gpu248d -lopencv_legacy248d -lopencv_ml248d -lopencv_nonfree248d -lopencv_objdetect248d -lopencv_ocl248d -lopencv_photo248d -lopencv_stitching248d -lopencv_superres248d -lopencv_ts248d -lopencv_video248d -lopencv_videostab248d SOURCES += main.cpp dialog.cpp HEADERS += dialog.h FORMS += dialog.ui RESOURCES += img.qrc

dialog.h

#ifndef DIALOG_H
#define DIALOG_H

#include <QDialog>
#include <QTimer>
#include <QPixmap>
#include <QDebug>
#include <opencv/cv.h>
#include <opencv/highgui.h>
#include <opencv2/opencv.hpp>
using namespace cv;
namespace Ui {
class Dialog;
}

class Dialog : public QDialog
{
    Q_OBJECT

public:
    explicit Dialog(QWidget *parent = 0);
    ~Dialog();
    void initwebcam();
    void initBackgroundSubtractorMOG2();
    Mat frame ;
private slots:
    void getFrame(); //实现定时从摄像头取图并显示在label上的功能。

private:
    VideoCapture cap; //highgui 里提供的一个专门处理摄像头图像的结构体
    cv::BackgroundSubtractorMOG2 bg;
    VideoWriter writer; //摄像头每次抓取的图像为一帧,使用该指针指向一帧图像的内存空间
    Size videoSize;
    Ui::Dialog *ui;
    QTimer *timer;                              /* 定时器,更新界面 */
};

#endif // DIALOG_H

dialog.cpp

#include "dialog.h"
#include "ui_dialog.h"

static bool recodeflag=false;
static cv::Mat frame;
static cv::Mat back;
static cv::Mat fore;
static Mat copyimg;
static std::vector<std::vector<cv::Point> > contours;


static int count=0;


Dialog::Dialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog)
{
    ui->setupUi(this);
    timer = new QTimer(this);
    initwebcam();
    initBackgroundSubtractorMOG2();
    connect(timer,SIGNAL(timeout()),this,SLOT(getFrame())); //超时就去取
    timer->start(5); //1000为1秒,10毫秒去取一帧



}

Dialog::~Dialog()
{
    timer->stop(); //停止取帧

    delete ui;
}

void Dialog::initwebcam()
{
    cap=VideoCapture(0);
    if(!cap.isOpened()){

        qDebug()<<"init webcam  error ,program exit...";
        return;
    }
    cap.set(CV_CAP_PROP_FRAME_WIDTH, 320);      /* set width */
    cap.set(CV_CAP_PROP_FRAME_HEIGHT, 240);     /* set height */

    videoSize=Size(320,240);





}

void Dialog::initBackgroundSubtractorMOG2()
{
    bg.setInt("nmixtures", 3);
    bg.setBool("detectShadows", false);


    writer.open("result.avi",CV_FOURCC(D,I,V,X),15,videoSize);
}

void Dialog::getFrame(){
     //从摄像头取帧
//    static  QPixmap pixmapObject(":/image/webcam.png");
//    ui->label_3->setPixmap(pixmapObject);

    cap>>frame;
    frame.copyTo(copyimg);
    QImage image = QImage((const uchar*)frame.data, frame.cols, frame.rows, QImage::Format_RGB888).rgbSwapped(); //简单地转换一下为Image对象,rgbSwapped是为了显示效果色彩好一些。
    ui->label->setPixmap(QPixmap::fromImage(image));
    bg.operator ()(frame,fore);
    bg.getBackgroundImage(back);
    cv::erode(fore,fore,cv::Mat());
    cv::dilate(fore,fore,cv::Mat());
    cv::findContours(fore,contours,CV_RETR_EXTERNAL,CV_CHAIN_APPROX_NONE);
    if (contours.size()>0 &&count>0)
            {
                //如果轮廓的面积太小了也不用写到输出视频
                for (int i = 0; i< contours.size(); i++)
                {
                    double a=contourArea( contours[i],false);
                    if (a>500)//面积小于1000
                    {
                        cv::drawContours(frame,contours,i,cv::Scalar(0,0,255),2);
                        recodeflag=true;
                    }
                    else
                    {
                        recodeflag=false;
                    }
                }

            }
            else
            {
                recodeflag=false;

            }
    if(recodeflag){
        QImage imagelable2 = QImage((const uchar*)frame.data, frame.cols, frame.rows, QImage::Format_RGB888).rgbSwapped();

        ui->label_2->setPixmap(QPixmap::fromImage(imagelable2));
    }else {
        //static  QPixmap pixmapObject(":/image/webcam.png");
       // ui->label_2->setPixmap(pixmapObject);
        ui->label_2->setText("<h1><center><font color=‘red‘>NOTHING</font></center></h1>");

    }


    if (recodeflag)
        {
            //std::string outfile(cv::format("%d.jpg",imagecount));
            //writer<<frame;
            writer<<copyimg;
            //imwrite(outfile,frame);
            //imagecount++;
        }
        count++;
}

效果图

背景建模

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异物入侵

bubuko.com,布布扣

生成异物入侵的视频文件

bubuko.com,布布扣

bubuko.com,布布扣

 

基于QT的一个简易的安防,布布扣,bubuko.com

基于QT的一个简易的安防

标签:style   blog   http   color   get   使用   

原文地址:http://www.cnblogs.com/yuliyang/p/3798793.html

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