Trying to use OpenCV

[danilodsp]

Hello,

I am trying to use OpenCV for the first time. I'm not getting.

I'm following in the steps of the forum comments here.

My .pro:

QT += core

QT -= gui

TARGET = vision
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

INCLUDEPATH += E:/OpenCV2.3/opencv/modules/core/include \
E:/OpenCV2.3/opencv/modules/highgui/include

LIBS += -L"E:/OpenCV2.3/build/x64/mingw/bin"
LIBS += -lopencv_core230 -lopencv_highgui230

My main.cpp:

#include <QtCore/QCoreApplication>

#include <opencv2/highgui/highgui.hpp>
#include <opencv2/core/core.hpp>

int main(int argc, char *argv[])
{
cv::Mat image = cv::imread("C:\teste.jpg");
cv::namedWindow("My Image");
cv::imshow("My Image", image);
cv::waitKey(-1);
return 0;
}

The following error occurs when you make the release:
E:/OpenCV2.3/build/x64/mingw/bin/libopencv_core230.dll: file not recognized: File format not recognized
collect2: ld returned 1 exit status
make[1]: *** [debug\vision.exe] Error 1
make[1]: Leaving directory `C:/Users/Danilo Pena/Meus Programas Qt/CV/vision'
make: *** [debug] Error 2

always this occurs:
E:/OpenCV2.3/build/x64/mingw/bin/libopencv_core230.dll: file not recognized: File format not recognized

My OpenCV installed on:
E:/OpenCV2.3/


Thanks.

Added after 1 22 minutes:

I had forgotten to make mingw32-make.
Error continues.

My .pro:

QT += core

QT -= gui

TARGET = vision
CONFIG += console
CONFIG -= app_bundle

TEMPLATE = app

SOURCES += main.cpp

INCLUDEPATH += E:/OpenCV2.3/opencv/modules/core/include \
E:/OpenCV2.3/opencv/modules/highgui/include

LIBS += "E:\OpenCV2.3\build\lib\libopencv_core230.dll.a" \
LIBS "E:\OpenCV2.3\build\lib\libopencv_highgui230.dll.a"

New erro:

:: error: LIBS: No such file or directory

[Dong Back Kim]

I have few questions to answer your question. =)

- is it 64bit or 32bit OS? Do you have correct version of libraries (i.e. mingw, Qt and OpenCV are based on the same bit system)
- Can you really find E:\OpenCV2.3\build\lib\libopencv_core230.dll.a and E:\OpenCV2.3\build\lib\libopencv_highgui230.dll.a?
- Line 17 "LIBS "E:\OpenCV2.3\build\lib\libopencv_highgui230.dll.a", I think you should remove "LIBS" in the beginning. It's syntax error

[danilodsp]

Thanks!


I have few questions to answer your question. =)

- is it 64bit or 32bit OS? Do you have correct version of libraries (i.e. mingw, Qt and OpenCV are based on the same bit system)
- Can you really find E:\OpenCV2.3\build\lib\libopencv_core230.dll.a and E:\OpenCV2.3\build\lib\libopencv_highgui230.dll.a?
- Line 17 "LIBS "E:\OpenCV2.3\build\lib\libopencv_highgui230.dll.a", I think you should remove "LIBS" in the beginning. It's syntax error

1. Yes, my system it's ok, 64bits.
2. Yes.
3. I corrected, is now working.

New problem,

The program window does not open:
Starting C:\Users\Danilo Pena\Meus Programas Qt\CV\visao-build-desktop\release\visao.exe...
C:\Users\Danilo Pena\Meus Programas Qt\CV\visao-build-desktop\release\visao.exe exited with code -1073741511

It only works if I remove part of the code opencv.

[danilodsp]

I'm using Qt4, OpenCV2.3 and gcc4.3.3 on Windows.

I do not know the meaning of:
exited with code -1073741511

[stampede]

I do not know the meaning of:
exited with code -1073741511
Download Err.exe (http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=985)


Err.exe -1073741511
# for decimal -1073741511 / hex 0xc0000139 :
STATUS_ENTRYPOINT_NOT_FOUND ntstatus.h
# {Entry Point Not Found}
# The procedure entry point %hs could not be located in the
# dynamic link library %hs.

Try putting the linked libraries (exactly those!) in your app.exe directory, now it looks like wrong version of library is used when you launch the app.

[danilodsp]

Hi stampede,

I saw this in another comment. I put the dll in the folder of the release and does not work.

My include:

#include <QMainWindow>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>

Error also occurs when I make "qmake && make":
(...)
c:\Qt\2010.05\qt\lib/libqtmaind.a(qtmain_win.o):qtmain_win.cpp:(.eh_fra me+0x12):
undefined reference to `__gxx_personality_v0'
collect2: ld returned 1 exit status
make[1]: *** [debug\compv.exe] Error 1
make[1]: Leaving directory `C:/Users/Danilo Pena/Meus Programas Qt/Computer Visi
on/compv'
make: *** [debug] Error 2

[marco_855]

Did you manage to resolve the issue?
I have the same problem.
Do I need to recompile the OpenCV with qt and use my own reproduced dlls?