计时与读取列表文件

计时

[code]    double t = (double)cvGetTickCount();
         此处添加程序处理代码
    t = (double)cvGetTickCount() - t;
    cout << "cost time: " << t / ((double)cvGetTickFrequency()*1000.) <<" ms "<< endl;

读取文件数据

[code]    ifstream in;
    in.open("a.txt");
    if (in && !in.is_open())
    {
        return false;
    }
    string filename;

    while ( in >> filename)
    {
        filelist.push_back(filename);
    }
    in.close();