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!