Berkay's profile - activity

using namespace cv; using namespace std; int main(){ Mat img1,img2,dst; VideoCapture capture(0); // kamera aç name

using namespace cv; using namespace std; int main(){ Mat img1,img2,dst; VideoCapture capture(0); // kamera aç namedWin

this code can be builded but when ı work it, a fatal error happens

comparing two image Hi, ı want to compare two images and if there is any difference ı want to get 1 or 0 in C++ language

comparing two image Hi, ı want to compare two images and if there is any difference ı want to get 1 or 0 in C++ language

comparing two image hi, ı want to compare two images and if there is any difference ı want to get 1 or 0 in C++ language

thanks for respond, ı added this two line num_of_vehicle+=cars.size(); cout << "Found " <<num_of_vehicle&lt;&lt; "="" cars"="" &lt;<endl;<="" strong=""> and ı make number of car counted but this line does not give true vehicle number because cascade can perceive the same car several times until that car vanish on the screen

hi, I wrote this codes to detect vehicles inside each frame in the video. Now I want to count them but I don't know how to do it. Could you show me how, please?

#include "stdafx.h"
#include <opencv2/imgproc/imgproc.hpp>
#include <opencv2/objdetect/objdetect.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <iostream>
#include <vector>

using namespace cv;
using namespace std;

int main(){

    VideoCapture cap("arabalar2.avi"); // open the video file for reading

    if ( !cap.isOpened() )  // if not success, exit program
    {
         cout << "Cannot open the video file" << endl;
         return -1;
    }

    Mat gray;

    string cascade_file= "C:/Cascades/haarcascades/cars.xml";
    CascadeClassifier cascade;

    if (cascade_file.empty() || !cascade.load(cascade_file))
    {
        cout << "Hata: cascade dosyası bulunamadı!n";
        return -1;
    }

    namedWindow("MyVideo",CV_WINDOW_NORMAL);  

    while(1){

        Mat frame;

        bool bSuccess = cap.read(frame); // read a new frame from video

         if (!bSuccess) //if not success, break loop
         {
              cout << "Cannot read the frame from video file" << endl;
              break;
         }

        cvtColor(frame, gray, CV_BGR2GRAY);
        equalizeHist(gray, gray);
        vector<Rect> cars;

        cascade.detectMultiScale(gray, cars, 1.1, 3, CV_HAAR_DO_CANNY_PRUNING|CV_HAAR_SCALE_IMAGE, Size(30,30));

        for (int i = 0; i < cars.size(); i++) // draw a rectangle for dedected vehicles
        {
            Rect rect = cars[i];
            rectangle(frame, rect, CV_RGB(0,255,0), 1);
        }

        imshow("MyVideo", frame);

        if(waitKey(30) == 27) //wait for 'esc' key press for 30 ms. If 'esc' key is pressed, break loop
        {
                cout << "esc key is pressed by user" << endl; 
                break; 
        }

    }
    return 0;
}

ı found a kalman tutorial from http://opencvexamples.blogspot.com/20... when ı build this codes, VS 2012 gives me error C2100: illegal indirection about line which includes KF.transitionMatrix = *(Mat_<float>(4, 4) << 1,0,1,0, 0,1,0,1, 0,0,1,0, 0,0,0,1); what can ı do to vanish this error?

thank you...

#include "stdafx.h"
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>

using namespace std;
using namespace cv;

volatile int knt=0;

Mat img_save;

void CallBackFunc(int event, int x, int y, int flags, void* userdata){

    if(event == EVENT_LBUTTONDOWN){

        Mat dst;

        if(knt==0){
           dst=imread("Nature.jpg");
           knt=1;
        }

        else if(knt==1)
            dst=img_save.clone();

        img_save=dst;

        int data=50;
        Rect dikdortgen( (x-data/2), (y-data/2), data, data );
        rectangle(dst, dikdortgen, CV_RGB(255,255,255),2);

        imshow("My Window", dst);
     }
}


int main(int argc, char** argv){

     int kontrol=0;
     Mat img = imread("Nature.JPG"); // Read image from file 

     if ( img.empty() )  //if fail to read the image
     { 
          cout << "Error loading the image" << endl;
          return -1; 
     }

     namedWindow("My Window", CV_WINDOW_NORMAL); //Create a window

     setMouseCallback("My Window", CallBackFunc, 0); //set the callback function 

     if(kontrol==0){
        imshow("My Window", img); //show the image
        kontrol=1;
     }

     waitKey(0); // Wait until user press some key   
     return 0;
}

when ı run this program ı can draw a square where ı click on the image, but there is problem, ı don't have to see previous drawing square when ı click anywhere else could you help?

this does not solve my problem because actually ı had to indicate that any function instead of any loop. it's my mistake... ı want to use that image all functions which are out of main()

ı meant that if you state volatile variable in C, you can use it on any loop as variable. it's not necassary to introduce one more times in loop which uses volatile variable. ı want to do like this for an image that ı loaded

ı want to use Mat img=imread("Nature.jpg"); to all func. such volatile int temp; is there any way for this?

thank you...

  why does numbers of image titles overlap each other?

          #include "stdafx.h"
>         #include <opencv2/highgui/highgui.hpp>
>         #include <opencv2/opencv.hpp>
>         #include <iostream>
>         #include <string>
>         
>         using namespace std;
>         using namespace cv;
>         
>         string print_name(int x){
>         
>           char buffer[15];
>           sprintf_s(buffer,"Resim %d",x);
>           return buffer;
>         }
>         
>         int main( int argc, char** argv ){
>             
>           int k=0;
>         
>             Mat small_image = imread("pluto.jpg"); 
>         
>             Mat im_out = Mat::zeros(600, 800, CV_8UC3);
>         
>             for (int i=0; i < 4; i++){
>         
>                 for(int j=0; j < 3; j++){
>                   k++;
>                   putText(small_image, print_name(k), Point(45, 180),
>                          FONT_HERSHEY_SCRIPT_SIMPLEX, 1,
>                          Scalar::all(255), 1,CV_AA);
>                   small_image.copyTo(im_out(Rect(i*200,j*200,small_image.cols,
>                          small_image.rows)));
>                 }
>             }
>             
>             imshow("window", im_out);
>             waitKey(0);
>             return 0;
>         }

hi, my purpose is to draw a contour to surrounding the object which has a wanted color, I can detect any color from image and I know how to draw contour to surrounding of all objects in image , but for instance I don't know how I'm able to draw contour for only red object on the image with the program below...

#include "stdafx.h"
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>

using namespace std;
using namespace cv;

Mat redFilter(const Mat& src){

    Mat redOnly;

    cvtColor(src,redOnly,CV_BGR2HSV);
    inRange(src, Scalar(0, 0, 0), Scalar(0, 0, 255), redOnly);

    return redOnly;
}

int main(int argc, char** argv){

    Mat input = imread("sekiller2.png");
    imshow("input", input);

    Mat redOnly = redFilter(input);
    imshow("redOnly", redOnly);

    waitKey();
    return 0;
}

Hi, below program does not work, ı can build without error but when ı click "start without debug" it gives error which is about cvtColor(); what should ı do? how can ı convert ranged image to HSV form?

#include "stdafx.h"
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>

using namespace std;
using namespace cv;

Mat redFilter(const Mat& src){

    Mat redOnly;

    cvtColor(src,redOnly,CV_BGR2HSV);
    inRange(src, Scalar(0, 0, 0), Scalar(0, 0, 255), redOnly);

    return redOnly;
}

int main(int argc, char** argv){

    Mat img_thrsld, img_trans, input = imread("sekiller2.png");
    imshow("input", input);

    Mat redOnly = redFilter(input);

    cvtColor(redOnly, img_trans, CV_BGR2GRAY);

    waitKey();
    return 0;
}