Ask Your Question
0

Problem with OpenCV3.0 and Qt creator

asked 2014-10-22 11:31:41 -0500

elone gravatar image

updated 2014-10-22 11:54:10 -0500

Hello, I need to use OpenCV with Qt creator, and need some help with OpenCV.

My problem occurs when I run any example or .exe made with OpenCV, after I install OpenCV with CMake(and checking WITH_QT in the process).

For example with the examples included in the installation, when I try to open one I get the following error:

image description

That says: Procedure entry point not found in the dynamic links library

My S.O. is Windows 8.1, 64 bits

I have tried to reinstall Qt and install differents versions, but the error is the same ever.

Thanks!

edit retag flag offensive close merge delete

Comments

Mmm not sure if I am right but it might be a Windows Path problem

Doombot gravatar imageDoombot ( 2014-10-22 13:19:38 -0500 )edit

If anyone came here thinking it was on Linux, maybe this post might help: http://bit.ly/1wqwUe7

Rodrigo Berriel gravatar imageRodrigo Berriel ( 2014-11-03 10:35:03 -0500 )edit

2 answers

Sort by ยป oldest newest most voted
1

answered 2014-10-22 16:35:38 -0500

This error tell you that Windows can find the DLL (here libopencv_highgui300.dll), but there is some functions missing in this DLL (transform_reset()). So I think the DLL was build with a different version of OpenCV than cpp_exemple_convexhull.exe. Maybe you unchecked "build example" in CMake? I suggest you to delete the folder C:/Qt/OPENCV_BUILD/install, rebuild the solution, and try again...

edit flag offensive delete link more

Comments

Yes that is more plausible than my answer, given that "Procedure entry point not found".

Doombot gravatar imageDoombot ( 2014-10-23 07:04:39 -0500 )edit
0

answered 2014-10-22 13:18:05 -0500

Doombot gravatar image

Well, it could be that the folder including your .dll is not included in the Windows "Path".

What you need to do is to click here: image description

Then:
image description

And:
image description

So you need to add the path of a folder containing the dll. For example:

image description

Should do it!

edit flag offensive delete link more

Comments

Thanks for your answer, but the error remains. I have the paths correctly in environment variables, also I try to paste libopencv_highgui300.dll into the samples directory, but the error is the same.

I am very confused, because in my other laptop(with windows 8) I dont get this error (this laptop is not valid for my work)

elone gravatar imageelone ( 2014-10-22 16:33:55 -0500 )edit
Login/Signup to Answer

Question Tools

Stats

Asked: 2014-10-22 11:31:41 -0500

Seen: 1,076 times

Last updated: Oct 22 '14