在opencv的文件夹中写入图像序列 [英] imwrite sequence of images in a folder in opencv

问题描述

在C ++中使用VS 2010，并尝试将其置于for循环中

Using VS 2010 in C++ and tried to put this in a for loop

String filename = "cropped_" + (ct+1);
imwrite(filename + ".jpg", img_cropped);

这些是出现的文件名:

ropped_.jpg
opped_.jpg
pped_.jpg

我该怎么做?以及如何将它们放在与源代码相同目录中的文件夹中?

How do I do it? And how do I put them in a folder in the same directory as my source code?

推荐答案

您可以使用std::stringstream建立顺序文件名:

You can use std::stringstream to build sequential file names:

首先包含C ++标准库中的sstream标头.

First include the sstream header from the C++ standard library.

#include<sstream>

using namespace std;

然后在代码中，您可以执行以下操作:

Then inside your code, you can do the following:

stringstream ss;

string name = "cropped_";
string type = ".jpg";

ss<<name<<(ct + 1)<<type;

string filename = ss.str();
ss.str("");

imwrite(filename, img_cropped);

要创建新文件夹，可以在stdlib.h中的system函数中使用Windows的命令mkdir:

To create new folder, you can use windows' command mkdir in the system function from stdlib.h:

 string folderName = "cropped";
 string folderCreateCommand = "mkdir " + folderName;

 system(folderCreateCommand.c_str());

 ss<<folderName<<"/"<<name<<(ct + 1)<<type;

 string fullPath = ss.str();
 ss.str("");

 imwrite(fullPath, img_cropped);

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