假如下载解压之后得到的opencv配置文件无法正常使用，你需要自己将开源文件编译一次，这样才更适合你的电脑。
https://opencv.org/opencv-3-4-1.html
https://cmake.org/files/v3.12/cmake-3.12.1.zip
并且，cmake需要与opencv版本号相兼容。
打开cmake.（路径最好不要出现中文）
选择opencv源文件夹。以及生成的文件夹。
生成文件夹的路径随意。
点击Configure 选择编译器版本
点击finish。结束之后，点击generate。生成项目。最后在选择的生成路径下找到opencv.sin(针对vs2017).打开项目。
点击重新生成解决方案。
生成结束之后。
找到
最终
-
VC++目录-->包含目录，添加：
D:\opencv3\opencv\mybuild\install\include -
VC++目录-->库目录，添加：
D:\opencv3\opencv\mybuild\install\x86\vc12\lib
D:\opencv3\opencv\mybuild\install\x86\vc12\staticlib -
链接器-->输入-->附加依赖项，添加：opencv_aruco341d.lib
opencv_bgsegm341d.lib
opencv_bioinspired341d.lib
opencv_calib3d341d.lib
opencv_ccalib341d.lib
opencv_core341d.lib
opencv_datasets341d.lib
opencv_dnn_objdetect341d.lib
opencv_dnn341d.lib
opencv_dpm341d.lib
opencv_face341d.lib
opencv_features2d341d.lib
opencv_flann341d.lib
opencv_fuzzy341d.lib
opencv_hfs341d.lib
opencv_highgui341d.lib
opencv_img_hash341d.lib
opencv_imgcodecs341d.lib
opencv_imgproc341d.lib
opencv_line_descriptor341d.lib
opencv_ml341d.lib
opencv_objdetect341d.lib
opencv_optflow341d.lib
opencv_phase_unwrapping341d.lib
opencv_photo341d.lib
opencv_plot341d.lib
opencv_reg341d.lib
opencv_rgbd341d.lib
opencv_saliency341d.lib
opencv_shape341d.lib
opencv_stereo341d.lib
opencv_stitching341d.lib
opencv_structured_light341d.lib
opencv_superres341d.lib
opencv_surface_matching341d.lib
opencv_text341d.lib
opencv_tracking341d.lib
opencv_video341d.lib
opencv_videoio341d.lib
opencv_videostab341d.lib
opencv_world341.lib
opencv_world341d.lib
opencv_xfeatures2d341d.lib
opencv_ximgproc341d.lib
opencv_xobjdetect341d.lib
opencv_xphoto341d.lib
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获取文件名字可以参考这个程序
#define _CRT_SECURE_NO_WARNINGS
#include <io.h>
#include <string>
#include <vector>
#include <iostream>
#include<fstream>
using namespace std;
//获取特定格式的文件名
void getAllFiles(string path, vector<string>& files, string format)
{
long hFile = 0;//文件句柄 64位下long 改为 intptr_t
struct _finddata_t fileinfo;//文件信息
string p;
if ((hFile = _findfirst(p.assign(path).append("\\*" + format).c_str(), &fileinfo)) != -1) //文件存在
{
do
{
if ((fileinfo.attrib & _A_SUBDIR))//判断是否为文件夹
{
if (strcmp(fileinfo.name, ".") != 0 && strcmp(fileinfo.name, "..") != 0)//文件夹名中不含"."和".."
{
files.push_back(p.assign(path).append("\\").append(fileinfo.name)); //保存文件夹名
getAllFiles(p.assign(path).append("\\").append(fileinfo.name), files, format); //递归遍历文件夹
}
}
else
{
files.push_back(p.assign(path).append("\\").append(fileinfo.name));//如果不是文件夹，储存文件名
}
} while (_findnext(hFile, &fileinfo) == 0);
_findclose(hFile);
}
}
int main()
{
string filePath = "D:\\Program\\Cpp\\CTOS_projact\\face_recgnition\\ConsoleApplication2\\at";
vector<string> files;
string format = ""; //查找文件的格式
getAllFiles(filePath, files, format);
int size = files.size();
char str[100];
std::ofstream outfile;
outfile.open("at.txt");
if (!outfile)
{
printf("error\n");
}
else
{
for (int i = 0; i < files.size(); i++)
{
//sprintf(str, "%s;\n", files[i]);
outfile<<files[i]<<";\n";
//cout << << endl;
}
}
system("pause");
return 0;
}
---------------------------2019年9月26日添加--------------------------------------
