cv::imwrite unicode路径
时间: 2024-12-15 11:26:13 浏览: 35
`cv::imwrite`函数在OpenCV库中用于将图像保存到文件,当你需要保存图像到包含Unicode字符(如非英文字符系统下的文件名)的路径时,你需要特别处理。在OpenCV 4.x及以上版本中,`imwrite`默认编码可能无法支持Unicode路径,这时你可以采取以下步骤:
1. 使用`std::wstring_convert`和`std::filesystem::path`:首先将Unicode字符串转换为`std::wstring`类型,这是Windows平台的标准宽字符类型,然后创建`cv::fs::wpath`对象,它专门用于处理宽字符路径。
```cpp
#include <opencv2/opencv.hpp>
#include <locale>
#include <codecvt>
#include <filesystem>
std::wstring_convert<std::codecvt_utf8<wchar_t>> converter;
std::string utf8Path = "非英文文件名.png";
std::wstring wpath = converter.from_bytes(utf8Path);
cv::fs::path path(wpath);
cv::imwrite(path, img); // img是你要保存的OpenCV Mat对象
```
2. 确保你的程序使用的编码设置正确:如果是在跨平台环境下,你可能还需要设置正确的字符编码,例如使用`std::setlocale(LC_ALL, "")`来启用本地化。
```cpp
std::setlocale(LC_ALL, "");
```
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