opencv之批量转换灰度图并保存

当图片名字有数字规律时，批量处理方式。

①srcImage 图片名字有规律

②将srcImage文件下的图片，转换为灰度图并保存入grayImage文件夹。

③

 #include <iostream>
 #include <opencv2/opencv.hpp>
 #include <string>
 using namespace cv;
 using namespace std;

 int main()
 {
     string fileName, grayFile;

     for(int i = ; i <= ; i++)
         for(int j = ; j <= ; j++)
         {
             //int 转换为 string
             stringstream ss1,ss2;
             string str1, str2;
             ss1 << i;
             ss1 >> str1;
             ss2 << j;
             ss2 >> str2;

             fileName = "srcImage/Tester_" + str1 + "TrainingPosepose_" + str2 + ".jpg";
             grayFile = "grayImage/Gray_Tester_" + str1 + "TrainingPosepose_" + str2 + ".jpg";
             //cout << fileName << endl;

             Mat srcImage = imread(fileName), grayImage;
             cvtColor(srcImage,grayImage,CV_BGR2GRAY);

             imwrite( grayFile, grayImage);
         }
     system("pause");
     return ;
 }

④完成