OpenCV批量读入（处理）

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

 using namespace cv;
 using namespace std;
 char* WcharToChar(const wchar_t* wp)
 {
     char *m_char;
     int len = WideCharToMultiByte(CP_ACP, , wp, wcslen(wp), NULL, , NULL, NULL);
     m_char = new char[len + ];
     WideCharToMultiByte(CP_ACP, , wp, wcslen(wp), m_char, len, NULL, NULL);
     m_char[len] = '\0';
     return m_char;
 }

 wchar_t* CharToWchar(const char* c)
 {
     wchar_t *m_wchar;
     int len = MultiByteToWideChar(CP_ACP, , c, strlen(c), NULL, );
     m_wchar = new wchar_t[len + ];
     MultiByteToWideChar(CP_ACP, , c, strlen(c), m_wchar, len);
     m_wchar[len] = '\0';
     return m_wchar;
 }

 wchar_t* StringToWchar(const string& s)
 {
     const char* p = s.c_str();
     return CharToWchar(p);
 }
 int main()
 {
     //定义文件格式
     const string file_form = "*.jpg";
     const string filePath = "M";
     string file_ReadPath = filePath + "/" + file_form;
     HANDLE hFile;
     //指定搜索目录和文件类型，如搜索d盘的音频文件可以是"D:\\*.mp3"
     LPCTSTR lpFileName = StringToWchar(file_ReadPath);
     //搜索得到的文件信息将储存在pNextInfo中;
     WIN32_FIND_DATA pNextInfo;
     //请注意是 &pNextInfo , 不是 pNextInfo;
     hFile = FindFirstFile(lpFileName, &pNextInfo);
     int j = ;
     if (hFile == INVALID_HANDLE_VALUE)
     {
         return false;//搜索失败
     }
     do
     {
         //必须加这句，不然会加载.和..的文件而加载不了图片，
         if (pNextInfo.cFileName[] == '.')//过滤.和..
             continue;
         j++;//读取一张图
         //wcout<<pNextInfo.cFileName<<endl;
         printf("%s\n", WcharToChar(pNextInfo.cFileName));
         //对读入的图片进行处理
         Mat srcImage = imread(filePath + "\\" + WcharToChar(pNextInfo.cFileName), CV_LOAD_IMAGE_GRAYSCALE);
         if ()
         {
             stringstream ss;
             ss << "h" << j << ".png";
             imwrite(ss.str(), srcImage);
         }

     } while (FindNextFile(hFile, &pNextInfo) && j<);

 }