c++讀取文件夾裏面的所有圖片，以及創建文件夾

 

#include <fstream>
#include <iostream>
#include <windows.h>
#include "opencv2/opencv.hpp"

using namespace std;
using namespace cv;

int main()
{
    string IMG_PATH = "E:\\VS\\Wake_Detection\\shipwake\\val\\JPEGImg\\*.jpg";
    vector<cv::String> filenames;
	cv::glob(IMG_PATH, filenames);

    cout << "total images are: " << filenames.size() << endl;
	for (int num = 0; num < filenames.size(); num++)
	{
		//獲取路徑下的文件名
		const size_t last_idx = filenames[num].rfind('\\');
		string basename = filenames[num].substr(last_idx + 1);

        
	    string SAVE_DIR = "E:/VS/Wake_Detection/data/";
	    string save_path = SAVE_DIR + basename.substr(0, basename.rfind('.'));

	    //創建目錄
	    bool flag = CreateDirectory(save_path.c_str(), NULL);
	    if (flag)
	    {
		    cout << "創建文件夾失敗！！！" << endl;
	    }
    }

    return 0;
}