[人工智能]OpenCV C++读取文指定文件夹下的所有图片，操作后存储指定文件夹下

#include<opencv2/opencv.hpp>
#include<iostream>
using namespace std;
using namespace cv;
int main()
{

	char fileName[50]; //读取图片的路径
	char fileName1[50];//保存图片的路径
	Mat src,dst;

	for (int i = 1; i < 3; i++) {

		sprintf_s(fileName,  "E:\\Download\\Images\\%d.jpg", i);  //读取图片的路径
		sprintf_s(fileName1, "E:\\Download\\Images\\xpx\\%d.jpg", i); //保存图片的路径

		src = imread(fileName); //从路径中读取图片

//**********************************************
		//操作，这里简单转化为灰度图，仅做展示
		cvtColor(src, dst,COLOR_BGR2GRAY);
//****************************************************


		imwrite(fileName1, dst); //保存处理后的图片
	}
	waitKey(0);   //单位毫秒，0表示永远 
	return 0;
}

参考二，指定路径下读取，并显示

#include <opencv2/opencv.hpp>
#include <iostream>

using namespace cv;
using namespace std;


class Ve {
public:
    vector<Mat> ReadImage(cv::String pattern);
};


int main()
{
    cv::String pattern = "E:\\Download\\Images\\*.jpg";
    Ve ve;
    vector<Mat> img = ve.ReadImage(pattern);
    return 0;
}
vector<Mat> Ve::ReadImage(cv::String pattern)
{
    vector<cv::String> fn;
    glob(pattern, fn, false);
    vector<Mat> images;
    size_t count = fn.size(); //number of png files in images folder
    for (size_t i = 0; i < count; i++)
    {
        images.emplace_back(cv::imread(fn[i]));
        imshow("img", imread(fn[i]));
        waitKey(0);
    }
    return images;
}