OpenCV-批量读取图像

在进行图像处理的过程中难免会用到批量图像读取，搜索了一些资料，实现了指定文件夹中图像的批量读取
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <opencv2/imgproc/imgproc.hpp>
#include <iostream>
#include <stdio.h>
#include<windows.h>
using namespace std;
using namespace cv;

void readImgNamefromFile(char *fileName, vector<string>&imgNames)
{
    //vector清零，参数设置
    imgNames.clear();
    WIN32_FIND_DATA file;
    int i = 0;
    char tempFilePath[MAX_PATH + 1];
    char tempFileName[50];
    //转换输入文件名
    sprintf(tempFilePath, "%s/*", fileName);
    //-char转化为WCHAR
    WCHAR wszClassName[256];
    memset(wszClassName, 0, sizeof(wszClassName));
    MultiByteToWideChar(CP_ACP, 0, tempFilePath, strlen(tempFilePath) + 1, wszClassName,sizeof(wszClassName) / sizeof(wszClassName[0]));
    //查找待操作文件的相关属性，读取到WIN32_FIND_DATA
    HANDLE handle = FindFirstFile(wszClassName, &file);
    if (handle != INVALID_HANDLE_VALUE)
    {
        FindNextFile(handle, &file);
        FindNextFile(handle, &file);
        //循环遍历得到文件夹得所有文件名
        do
        {
            sprintf(tempFileName, "%s", fileName);
            //--------------WCHAR转化为string
            wchar_t * wText = file.cFileName;
            DWORD dwNum = WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, NULL, 0, NULL, FALSE);// WideCharToMultiByte的运用
            char *psText;  // psText为char*的临时数组，作为赋值给std::string的中间变量
            psText = new char[dwNum];
            WideCharToMultiByte(CP_OEMCP, NULL, wText, -1, psText, dwNum, NULL, FALSE);// WideCharToMultiByte的再次运用        
            imgNames.push_back(psText);
            delete[]psText;// psText的清除

            imgNames[i].insert(0, tempFileName);
            i++;
        } while (FindNextFile(handle, &file));
    }
    FindClose(handle);
}

int main()
{
    //设置读入图像文件夹得路径
    char *fileName = "E:/图像数据/";
    vector<string>imgNames;
    //获取对应文件夹下所有文件名
    readImgNamefromFile(fileName, imgNames);
    //遍历对应文件夹下的所有文件名
    for (int i = 0; i<imgNames.size(); i++)
    {  
        Mat srcImage = imread(imgNames[i]);
        if( srcImage.empty())  
        {  
            cout << "Couldn\'t load " << imgNames[i] << endl;
            continue;
        } 
        namedWindow("Image", CV_WINDOW_NORMAL);
        imshow("Image", srcImage);
        waitKey(100);
    }
    //system("pause");
    return 0;
}

参考文献：
【1】寂寞的小乞丐http://www.cnblogs.com/wjy-lulu/p/6626405.html
【2】朱伟. OpenCV图像处理编程实例[M]. 电子工业出版社, 2016.