#include "opencv2/opencv.hpp"using namespace cv;

void main()

{

    Mat img1 = imread("E:\\pic\\1.bmp");

    Mat img2 = imread("E:\\pic\\55.bmp");

    imshow("img1", img1);

    imshow("img2", img2);

    Mat gray1, gray2;

    cvtColor(img1, gray1, CV_BGR2GRAY);

    cvtColor(img2, gray2, CV_BGR2GRAY);

    Mat diff;

    absdiff(gray1, gray2, diff);

    imshow("absdiss", diff);

    threshold(diff, diff, , , CV_THRESH_BINARY);

    imshow("threshold", diff);

    Mat element = getStructuringElement(MORPH_RECT, Size(, ));

    Mat element2 = getStructuringElement(MORPH_RECT, Size(, ));

    erode(diff, diff, element);

    imshow("erode", diff);

    dilate(diff, diff, element2);

    imshow("dilate", diff);

    vector<vector<Point>> contours;

    vector<Vec4i> hierarcy;

    findContours(diff, contours, hierarcy, CV_RETR_EXTERNAL, CHAIN_APPROX_NONE); //查找轮廓

    vector<Rect> boundRect(contours.size()); //定义外接矩形集合

    //drawContours(img2, contours, -1, Scalar(0, 0, 255), 1, 8);  //绘制轮廓

    int x0=, y0=, w0=, h0=;

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

    {

        boundRect[i] = boundingRect((Mat)contours[i]); //查找每个轮廓的外接矩形

        x0 = boundRect[i].x;  //获得第i个外接矩形的左上角的x坐标

        y0 = boundRect[i].y; //获得第i个外接矩形的左上角的y坐标

        w0 = boundRect[i].width; //获得第i个外接矩形的宽度

        h0 = boundRect[i].height; //获得第i个外接矩形的高度

        rectangle(img2, Point(x0, y0), Point(x0+w0, y0+h0), Scalar(, , ), , ); //绘制第i个外接矩形

    }

    imshow("result", img2);

    waitKey();

}

#include "opencv2/opencv.hpp"

#include<iostream>

using namespace std;

using namespace cv;

Mat MoveDetect(Mat background, Mat img)

{

    Mat result = img.clone();

    Mat gray1, gray2;

    cvtColor(background, gray1, CV_BGR2GRAY);

    cvtColor(img, gray2, CV_BGR2GRAY);

    Mat diff;

    absdiff(gray1, gray2, diff);

    //imshow("absdiss", diff);

    threshold(diff, diff, , , CV_THRESH_BINARY);

    //imshow("threshold", diff);

    Mat element = getStructuringElement(MORPH_RECT, Size(, ));

    Mat element2 = getStructuringElement(MORPH_RECT, Size(, ));

    erode(diff, diff, element);

    //imshow("erode", diff);

    dilate(diff, diff, element2);

    //imshow("dilate", diff);

    vector<vector<Point>> contours;

    vector<Vec4i> hierarcy;

    findContours(diff, contours, hierarcy, CV_RETR_EXTERNAL, CHAIN_APPROX_NONE); //查找轮廓

    vector<Rect> boundRect(contours.size()); //定义外接矩形集合

    //drawContours(img2, contours, -1, Scalar(0, 0, 255), 1, 8);  //绘制轮廓

    int x0=, y0=, w0=, h0=;

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

    {

        boundRect[i] = boundingRect((Mat)contours[i]); //查找每个轮廓的外接矩形

        x0 = boundRect[i].x;  //获得第i个外接矩形的左上角的x坐标

        y0 = boundRect[i].y; //获得第i个外接矩形的左上角的y坐标

        w0 = boundRect[i].width; //获得第i个外接矩形的宽度

        h0 = boundRect[i].height; //获得第i个外接矩形的高度

        rectangle(result, Point(x0, y0), Point(x0+w0, y0+h0), Scalar(, , ), , ); //绘制第i个外接矩形

    }

    return result;

}

void main()

{

    VideoCapture cap("E://bike.avi");

    if(!cap.isOpened()) //检查打开是否成功

         return;

    Mat frame;

    Mat background;

    Mat result;

    int count=;

    while()

    {

        cap>>frame;

        if(!frame.empty())

        {

            count++;

            if(count==)

                background = frame.clone(); //提取第一帧为背景帧

            imshow("video", frame);

            result = MoveDetect(background, frame);

            imshow("result", result);

            if(waitKey()==)

               break;

        }

        else

            break;

    }

    cap.release();

}

void main()

{

    VideoCapture cap("bike.avi");

    if(!cap.isOpened()) //检查打开是否成功

         return;

    Mat frame;

    Mat result;

    Mat temp;

    int count=;

    while()

    {

        cap>>frame;

        if(!frame.empty())

        {

            count++;

            if(count==)

                 result = MoveDetect(frame, frame);

            else

                 result = MoveDetect(temp, frame);

            imshow("video", frame);

            imshow("result", result);

            temp = frame.clone();

            if(waitKey()==)

               break;

        }

        else

            break;

    }

    cap.release();

}