我在opencv3上有一个程序有问题，这是调试回溯
Loaded the Face Detection cascade classifier [lbpcascade_frontalface.xml].
Loaded the 1st Eye Detection cascade classifier [haarcascade_lefteye_2splits.xml].
Loaded the 2nd Eye Detection cascade classifier [haarcascade_righteye_2splits.xml].
VIDIOC_QUERYMENU: Invalid argument
VIDIOC_QUERYMENU: Invalid argument
VIDIOC_QUERYMENU: Invalid argument
[New Thread 0x7fffdef9d700 (LWP 17762)]
[New Thread 0x7fffdeb9c700 (LWP 17764)]
[New Thread 0x7fffd6b9c700 (LWP 17763)]
+++++Cara detectada
ojos abiertos
Program received signal SIGSEGV, Segmentation fault.
0x0000000000403967 in cv::Mat::release() ()
(gdb) bt
#0 0x0000000000403967 in cv::Mat::release() ()
#1 0x0000000000403730 in cv::Mat::~Mat() ()
#2 0x000000000040342a in main ()
这是主要代码，我是opencv和c ++的新手，我试图检测眼睛是否闭合。我希望你能帮我看看我的错误
int main(){
CascadeClassifier faceCascade;
CascadeClassifier eyeCascade1;
CascadeClassifier eyeCascade2;
initDetectors(faceCascade, eyeCascade1, eyeCascade2);
// Initialize and allocate memory to load the video stream from camera
VideoCapture camera(0);
if (!camera.isOpened())
return 1;
while (true)
{
// Grab and retrieve each frames of the video sequentially
Mat frame;
camera >> frame;
// Set Region of Interest to the area defined by the box
cv::Rect roi;
roi.x = 0;
roi.y = 0;
roi.width = 640;
roi.height = 480;
// Crop the original image to the defined ROI
cv::Mat crop = frame(roi);
cv::imshow("crop", crop);
vector<Mat> preprocessedFaces;
Mat displayedFrame;
frame.copyTo(displayedFrame);
// Find a face and preprocess it to have a standard size and contrast & brightness.
Rect faceRect; // Position of detected face.
Rect searchedLeftEye, searchedRightEye; // top-left and top-right regions of the face, where eyes were searched.
Point leftEye, rightEye; // Position of the detected eyes.
getPreprocessedFace(frame, faceWidth, faceCascade, eyeCascade1, eyeCascade2, preprocessLeftAndRightSeparately, &faceRect, &leftEye, &rightEye, &searchedLeftEye, &searchedRightEye);
//wait for 40 milliseconds
int c = waitKey(40);
//exit the loop if user press "Esc" key (ASCII value of "Esc" is 27)
if (27 == char(c))
break;
}
return 0;}