Segmentation fault
I wish to learn Open-CV for a project When I compile my program i have no error, but when I execute it, I have :
Segmentation fault (core dumped) here is my code
#include "opencv2/objdetect.hpp"
#include "opencv2/videoio.hpp"
#include "opencv2/highgui.hpp"
#include "opencv2/imgproc.hpp"
#include <opencv2/core/core.hpp>
#include <iostream>
#include <stdio.h>
using namespace std;
using namespace cv;
void detectAndDisplay( Mat frame );
String face_cascade_name, eyes_cascade_name;
CascadeClassifier face_cascade;
CascadeClassifier eyes_cascade;
String window_name = "Capture - Face detection";
int main( int argc, const char** argv )
{
Mat image;
CommandLineParser parser(argc, argv,
"{help h|}"
"{face_cascade|haarcascade_frontalface_alt.xml|}");
cout << "\nThis program demonstrates using the cv::CascadeClassifier class to detect objects (Face + eyes) in a video stream.\n"
"You can use Haar or LBP features.\n\n";
parser.printMessage();
face_cascade_name = parser.get<string>("face_cascade");
VideoCapture capture;
Mat frame;
if( !face_cascade.load( face_cascade_name ) ){ printf("--(!)Error loading face cascade\n"); return -1; };
image = imread("a3.bmp", CV_LOAD_IMAGE_COLOR);
//check image valid
if(image.empty()){
cout << "can't open or read image" << endl;
}else{
//create windows for display
namedWindow("OpenCV", WINDOW_AUTOSIZE);
//show imag in it
detectAndDisplay( image );
imshow("OpenCV", image);
//wating user press any key to finish
waitKey();
}
return 0;
}
void detectAndDisplay( Mat frame )
{
std::vector<Rect> faces;
Mat frame_gray;
cvtColor( frame, frame_gray, COLOR_BGR2GRAY );
equalizeHist( frame_gray, frame_gray );
//-- Detect faces
face_cascade.detectMultiScale( frame_gray, faces, 1.1, 2, 0|CASCADE_SCALE_IMAGE, Size(30, 30) );
for ( size_t i = 0; i < faces.size(); i++ )
{
Point center( faces[i].x + faces[i].width/2, faces[i].y + faces[i].height/2 );
ellipse( frame, center, Size( faces[i].width/2, faces[i].height/2 ), 0, 0, 360, Scalar( 255, 0, 255 ), 4, 8, 0 );
Mat faceROI = frame_gray( faces[i] );
}
//-- Show what you got
imshow( window_name, frame );
}