boundingrect在OpenCV C ++中不适用于轮廓 [英] boundingrect not working for a contour in opencv c++

问题描述

{

 #include<opencv2\opencv.hpp>
 #include<iostream>
 #include<conio.h>

 using namespace std;
 using namespace cv;

 int main()
{
int a = 0;

Mat frame, diffimage,back,frame_gray;
VideoCapture cap("D:\\elance\\check\\Sent3.avi");
vector<vector<Point>> contours;
BackgroundSubtractorMOG2 bg;
vector<int> params;
params.push_back(CV_IMWRITE_PNG_COMPRESSION);
params.push_back(9);

for (int i = 0; i < 200;i++)
{
    cap >> frame;
    if (frame.empty())
        break;
    bg(frame,back);
}

bg.getBackgroundImage(back);
cap.set(CV_CAP_PROP_POS_FRAMES,0);
cvtColor(back, back, CV_BGR2GRAY);
//for (int f = 0; f < 20;f++)
while (1)
{
    a = a + 1;
    cout << "Frame no : " << a<<endl;
    cap >> frame;
    if (frame.empty())
        break;
    cvtColor(frame, frame_gray, CV_BGR2GRAY);
    absdiff(frame_gray, back, diffimage);
    threshold(diffimage, diffimage, 10, 255, CV_THRESH_BINARY);

    for (int i = 0; i < 2; i++)
    {
        cv::erode(diffimage, diffimage, cv::Mat());
        cv::dilate(diffimage, diffimage, cv::Mat());
    }
    findContours(diffimage, contours, CV_RETR_LIST, CV_CHAIN_APPROX_NONE);
    cout << "Contour Size : " << contours.size()<<endl;
    vector<Rect> boundRect(contours.size());
    for (int i = 0; i < contours.size(); i++)
    {
        drawContours(frame, contours, i, cv::Scalar(0, 255, 255), 1);
        Mat smoothCont;
        smoothCont = cv::Mat(contours[i]);
        cout << smoothCont.rows << "\t" << smoothCont.cols <<"\t"<<smoothCont.depth()<< endl << endl;
        if (smoothCont.rows > 0 && smoothCont.rows < 10000)
            boundRect[i] = boundingRect(Mat(contours[i]));
    }
    for (int i = 0; i < contours.size(); i++)
        rectangle(frame, boundRect[i], Scalar(0, 255, 255), 1, 8, 0);
    imshow("Diff", diffimage);
    imshow("frame", frame);
    imwrite("D:\\test.jpg", frame, params);
    waitKey(30);
    break;
}

}

此代码基本上采用轮廓，结果是轮廓上的矩形.但是只有一个以框为界，而其他轮廓仍然不是以框为界.

This code basically takes the contours and results are the rectangles on the contours. But only one is bounded by the box and other contour is is still not bounded box.

任何人都可以在这件事上提供帮助吗?

Can anyone help in this matter ?

推荐答案

也许是如果(smoothCont.rows> 0&& smoothCont.rows< 10000)"将它们过滤掉了?

Maybe "if (smoothCont.rows > 0 && smoothCont.rows < 10000)" filtered them out?

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