c++ - 调试断言失败

Question

我正在使用 Visual Studio 2010 中集成的 OpenCv 编写 C++ 代码。我正在学习本教程:

http://opencv-srf.blogspot.com/2013/06/load-display-image.html

但是当我运行代码时，我收到了这个错误信息:

调试断言失败程序:...cuments\visual studio 2010\Projects\test1\x64\Debug\test1.exe文件:f:\dd\vctools\crt_bld\self_64_amd64\crt\src\fopen.c行:54

表达式:(文件!= NULL)

有关您的程序如何导致断言的信息失败，请参阅有关断言的 Visual C++ 文档。

这是我的代码:

#include "opencv2/highgui/highgui.hpp"
#include <iostream>

using namespace cv;
using namespace std;

int main()
{
    Mat im = imread("C:/Users/Ruaa/Pictures/aa.png");
    if (im.empty()) 
    {
        cout << "Cannot load image!" << endl;
        return -1;
    }
    imshow("Image", im);
    waitKey(0);
}


'test1.exe': Loaded 'C:\Users\Ruaa\Documents\Visual Studio 2010\Projects\test1\x64\Debug\test1.exe', Symbols loaded.
'test1.exe': Loaded 'C:\Windows\System32\ntdll.dll', Cannot find or open the PDB file
'test1.exe': Loaded 'C:\Windows\System32\kernel32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\KernelBase.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\opencv1\opencv\build\x64\vc11\bin\opencv_core245d.dll', Cannot find or open the PDB file
'test1.exe': Loaded 'C:\Windows\System32\msvcp110d.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\msvcr110d.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\opencv1\opencv\build\x64\vc11\bin\opencv_highgui245d.dll', Cannot find or open the PDB file
'test1.exe': Loaded 'C:\Windows\System32\user32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\gdi32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\lpk.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\usp10.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\msvcrt.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\ole32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\rpcrt4.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\oleaut32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\advapi32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\sechost.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\winsxs\amd64_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7600.16661_none_a44e1fc257f685f6\comctl32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\msvfw32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\winmm.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\shell32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\shlwapi.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\avifil32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\msacm32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\avicap32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\version.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\msvcr100.dll', Symbols loaded.
'test1.exe': Loaded 'C:\Windows\System32\msvcp100.dll', Symbols loaded.
'test1.exe': Loaded 'C:\Windows\System32\imm32.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\msctf.dll', Symbols loaded (source information stripped).
Debug Assertion Failed!

Program: ...cuments\visual studio 2010\Projects\test1\x64\Debug\test1.exe
File: f:\dd\vctools\crt_bld\self_64_amd64\crt\src\fopen.c
Line: 54

Expression: (file != NULL)

For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts.

(Press Retry to debug the application)
'test1.exe': Loaded 'C:\Windows\System32\uxtheme.dll', Symbols loaded.
'test1.exe': Loaded 'C:\Windows\System32\dwmapi.dll', Symbols loaded (source information stripped).
'test1.exe': Loaded 'C:\Windows\System32\cryptbase.dll', Symbols loaded (source information stripped).
The program '[4984] test1.exe: Native' has exited with code 3 (0x3).

这是调用堆栈:

msvcr110d.dll!fopen()  + 0x23 bytes 
    opencv_highgui245d.dll!000007feea737ea8()   
    [Frames below may be incorrect and/or missing, no symbols loaded for opencv_highgui245d.dll]    
    opencv_highgui245d.dll!000007feea73a725()   
    opencv_highgui245d.dll!000007feea73a5f1()   
>   test1.exe!main()  Line 10 + 0x3d bytes  C++
    test1.exe!__tmainCRTStartup()  Line 555 + 0x19 bytes    C
    kernel32.dll!BaseThreadInitThunk()  + 0xd bytes 
    ntdll.dll!0000000077752ca1()    

Answer 1

这里有两个问题:

1. 您的文件 C:/Users/Ruaa/Pictures/aa.png 不存在，您应该尝试使用现有文件
2. 你使用OpenCV的libs调试版本，去掉.lib/.dll文件末尾的d，比如opencv_highgui245d => opencv_highgui245，这将阻止断言，使其更快，并且您很少需要在内部 OpenCV 中调试