I used the following code for implementing Background Subtraction in OpenCV:

//opencv

include <opencv2 highgui="" highgui.hpp="">

include <opencv2 video="" background_segm.hpp="">

include <opencv2 video="" video.hpp="">

//C

include <stdio.h>

//C++

include <iostream>

include <sstream>

using namespace cv; using namespace std;

//global variables Mat frame; //current frame Mat fgMaskMOG; //fg mask fg mask generated by MOG method

Ptr<backgroundsubtractor> pMOG; //MOG Background subtractor int keyboard;

int main( ) { //create GUI windows namedWindow("Frame"); namedWindow("FG Mask MOG");

//create Background Subtractor objects pMOG = new BackgroundSubtractorMOG(); //MOG approach

char* videoFilename; videoFilename="E:\Vide123.avi";

VideoCapture capture(videoFilename); if(!capture.isOpened()) { //error in opening the video input cerr << "Unable to open video file: " << videoFilename << endl; exit(EXIT_FAILURE); } //read input data. ESC or 'q' for quitting while( (char)keyboard != 'q' && (char)keyboard != 27 ) { //read the current frame if(!capture.read(frame)) { cerr << "Unable to read next frame." << endl; cerr << "Exiting..." << endl; exit(EXIT_FAILURE); } pMOG->apply(frame, fgMaskMOG);

 pMOG->operator()(frame,fgMaskMOG);
     //get the frame number and write it on the current frame
stringstream ss;
rectangle(frame, cv::Point(10, 2), cv::Point(100,20),
          cv::Scalar(255,255,255), -1);
ss << capture.get(CAP_PROP_POS_FRAMES);
string frameNumberString = ss.str();
putText(frame, frameNumberString.c_str(), cv::Point(15, 15),
        FONT_HERSHEY_SIMPLEX, 0.5 , cv::Scalar(0,0,0));
//show the current frame and the fg masks
imshow("Frame", frame);
imshow("FG Mask MOG", fgMaskMOG);

//get the input from the keyboard
keyboard = waitKey( 30 );

} capture.release(); //destroy GUI windows destroyAllWindows(); return 0; }

I got the following warning: Error opening file(../../module/highgui/src/cap_ffmpeg_impl.hpp:361)

Unhandled exception at 0X77467bb8(ntdll.dll) in cvp.exe: 0xC0000005: Access violation reading location 0x718df4d8

I am new to openCV and video processing.. Any help would be appreciated. Please help me out!

I used the following code for implementing Background Subtraction in OpenCV:

//opencv
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/video/background_segm.hpp>
#include <opencv2/video/video.hpp>
//C
#include <stdio.h>
//C++
#include <iostream>
#include <sstream>

using namespace cv;
using namespace std;
 
std;
//global variables
Mat frame; //current frame
Mat fgMaskMOG; //fg mask fg mask generated by MOG method
 
Ptr<backgroundsubtractor> method
Ptr<BackgroundSubtractor> pMOG; //MOG Background subtractor
int keyboard;
 
keyboard;
int main( )
{
//create GUI windows
namedWindow("Frame");
namedWindow("FG Mask MOG");
 
MOG");
//create Background Subtractor objects
pMOG = new BackgroundSubtractorMOG(); //MOG approach
 
approach
char* videoFilename;
videoFilename="E:\Vide123.avi";
 
videoFilename="E:\\Vide123.avi";
VideoCapture capture(videoFilename);
if(!capture.isOpened())
{
//error in opening the video input
cerr << "Unable to open video file: " << videoFilename << endl;
exit(EXIT_FAILURE);
}
//read input data. ESC or 'q' for quitting
while( (char)keyboard != 'q' && (char)keyboard != 27 )
{
//read the current frame
if(!capture.read(frame))
{
cerr << "Unable to read next frame." << endl;
cerr << "Exiting..." << endl;
exit(EXIT_FAILURE);
}
pMOG->apply(frame, fgMaskMOG);
 
fgMaskMOG);
 pMOG->operator()(frame,fgMaskMOG);
  //get the frame number and write it on the current frame
 stringstream ss;
 rectangle(frame, cv::Point(10, 2), cv::Point(100,20),
 cv::Scalar(255,255,255), -1);
 ss << capture.get(CAP_PROP_POS_FRAMES);
 string frameNumberString = ss.str();
 putText(frame, frameNumberString.c_str(), cv::Point(15, 15),
 FONT_HERSHEY_SIMPLEX, 0.5 , cv::Scalar(0,0,0));
 //show the current frame and the fg masks
 imshow("Frame", frame);
 imshow("FG Mask MOG", fgMaskMOG);
 //get the input from the keyboard
 keyboard = waitKey( 30 );
 
 }
capture.release();
//destroy GUI windows
destroyAllWindows();
return 0;
}}

Unhandled exception at 0X77467bb8(ntdll.dll) in cvp.exe: 0xC0000005: Access violation reading location 0x718df4d8 
0x718df4d8