**Thank you so much Derek~~**> But as I run the project which I has posted before, It said
the code
#include
using namespace cv;
int main(){
VideoCapture video(0);
Mat frame, mask, thresholdImage, output;
Ptr subtractor = cv::createBackgroundSubtractorMOG2(20, 16, true);
namedWindow("background");
while (true){
video >> frame;
subtractor->apply(frame, mask, 0.001);
imshow("background", mask);
char c = (char)waitKey(20);
if (c == 27)
break;
}
return 0;
}
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