#-------------------------------------------------

#

# Project created by QtCreator --19T16::40
#

#-------------------------------------------------

QT       += core gui

greaterThan(QT_MAJOR_VERSION, ): 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

#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 = );

    ~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

#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=;

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(); //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();

    if(!cap.isOpened()){

        qDebug()<<"init webcam  error ,program exit...";

        return;

    }

    cap.set(CV_CAP_PROP_FRAME_WIDTH, );      /* set width */

    cap.set(CV_CAP_PROP_FRAME_HEIGHT, );     /* set height */

    videoSize=Size(,);

}

void Dialog::initBackgroundSubtractorMOG2()

{

    bg.setInt("nmixtures", );

    bg.setBool("detectShadows", false);

    writer.open("result.avi",CV_FOURCC('D','I','V','X'),,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()> &&count>)

            {

                //如果轮廓的面积太小了也不用写到输出视频

                for (int i = ; i< contours.size(); i++)

                {

                    double a=contourArea( contours[i],false);

                    if (a>)//面积小于1000

                    {

                        cv::drawContours(frame,contours,i,cv::Scalar(,,),);

                        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++;

}