Problem including OpenCv dll in LabView

[dinsla]

Hi, i´m using LabView 2013 and OpenCv 2.4.13.

I have wrote a code in c++ with OpenCv tools and want to use it in LabView.

To understand to communication between LabView and OpenCv i try to reproduce an example i found in this forum.

http://forums.ni.com/t5/Machine-Vision/How-can-I-get-an-image-back-to-labview-from-opencv-dll-code/m...

I build it exactly like Klemen show it in his solution answer. When i try to call the dll in LabView i get the error (Libary could not been find or load(don´t know if this is the 100% correct translation)).

I just get this error when i use the functions of OpenCv when i took them out of the code it works(cplusplus_code_working). I really have no idea of the reason of this mistake.

[Hatef.fouladi]

https://www.ni.com/en/support/documentation/supplemental/16/developing-vision-applications-using-ope...
https://www.ni.com/en/support/downloads/tools-network/download.vision-opencv-utilities.html
see these link it will be helpfull

[dinsla]

Am i right, that i can't use a dll with OpenCv code without the Vision Licence ?

[Hatef.fouladi]

no you can do it but it is hard to work and this toolkit is recommended
there is picture function part in labview with labview licence

[dinsla]

ok beacause i just haven't the possibility to work with the Vision licence.

So i don´t really yet get why i have this error.

[Hatef.fouladi]

there some discussion topic about it here
you have to create wrapper
also there are is one project use opencv dll for face detection with labview you can check them to find your problem
see bellow links
http://forums.ni.com/t5/kl3m3n-s-blog/Real-time-face-and-eye-detection-in-LabView-using-OpenCV-Harr/...
https://www.codeproject.com/Articles/28465/Easy-to-use-Wrapper-DLL-for-Intel-s-OpenCV-Library

http://dumypfetidbacie.c0.pl/dll-wrapper-generator-labview.html
http://natinst.public.imaq.general.narkive.com/VtTWZWVF/using-opencv-library-in-labview

[dinsla]

Thanks for your help i will look at the links in the next two days and will try to get it work.