QFile或QDir的中文路徑操作
QTextCodec *code = QTextCodec::codecForName("gb2312");//解決中文路徑問題
QString FilePath = QString::fromLocal8Bit(code->fromUnicode(HdrPath));
opecv的imwrite函數的中文路徑操作
string str = FileName.toLocal8Bit().toStdString();
bool flag = cv::imwrite(str, m_SaveImage, compression_params);