以下代码是 OpenCV 中相机校准程序的一部分。但是当我运行程序时出现错误：它说
无法打开配置文件
我把配置文件放在了，c:/Nn/default.xml但我仍然得到这个错误
你能帮我看看代码有什么问题吗？我是否将文件放在错误的路径中？
int main(int argc, char* argv[])
{
help();
Settings s;
const string inputSettingsFile = argc > 1 ? argv[1] : "c:/Nn/default.xml";
FileStorage fs(inputSettingsFile, FileStorage::READ); // Read the settings
if (!fs.isOpened())
{
cout << "Could not open the configuration file: \"" << inputSettingsFile << "\"" << endl;
return -1;
}
fs["Settings"] >> s;
fs.release(); // close Settings file
if (!s.goodInput)
{
cout << "Invalid input detected. Application stopping. " << endl;
return -1;
}
vector<vector<Point2f> > imagePoints;
Mat cameraMatrix, distCoeffs;
Size imageSize;
int mode = s.inputType == Settings::IMAGE_LIST ? CAPTURING : DETECTION;
clock_t prevTimestamp = 0;
const Scalar RED(0,0,255), GREEN(0,255,0);
const char ESC_KEY = 27;