OPENCV桌面捕获 [英] OPENCV Desktop Capture

问题描述

如何要在OpenCV中捕获桌面（即将位图转换为Mat）？

您好，

任何人都可以向我解释我将如何使用这个代码在OpenCV捕获桌面屏幕？我一直试图让它工作大约30-45分钟，但我的屏幕上没有捕获任何东西，当我运行它。

在我的应用程序从主我有以下三个语句

  HWND hwndDesktop = GetDesktopWindow 
 hwnd2mat（hwndDesktop）; 
 imshow（output，src）; 
  

我调用上面的链接中找到的函数hwnd2mat。

解决方案

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您似乎忘了捕获 hwnd2mat（）的返回：

  HWND hwndDesktop = GetDesktopWindow（）; 
 Mat src = hwnd2mat（hwndDesktop）; 
 imshow（output，src）; 
 waitKey（0）; 
  

How to capture the desktop in OpenCV (ie. turn a bitmap into a Mat)?

Hello,

Can anyone explain to me how I would use this code in OpenCV to capture the desktop screen? I've been trying to get it to work for about 30-45 minutes but my screen doesn't capture anything when I run it.

In my application from main I have the follow three statements

HWND hwndDesktop = GetDesktopWindow();
hwnd2mat(hwndDesktop);
imshow("output", src);

i'm calling the function hwnd2mat that is found in the link above. i'm a noob.

Thanks to anyone who answers.

解决方案

It seems you forgot to capture the return of hwnd2mat():

HWND hwndDesktop = GetDesktopWindow();
Mat src = hwnd2mat(hwndDesktop);
imshow("output", src);
waitKey(0);

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