Installing opencv

Thanks for your answer. I dont know what details do you mean. But here is what I have done so far:

Opencv is a library for image processing. The installation for mac, windows and linux is already on the internet and its easy to do it, I tried macport for installation. Using qt creator 5.3.1 and using CMake application. the compiler is clang x86 64 bit and 32 bit. For including the libraries in the code, the I need to add those lines to .pro file

LIBS+=-L/usr/local/lib/-lopencv_core-lopencv_highgui-lopencv_imgproc

INCLUDEPATH+=/usr/local/include/

By adding those to .pro file, the libraries are already included in program and I can include them. When I add one line of code to read an image the errors pops up.

Matdata=imread("/Usr/Sara/Desktop/Bild.jpg");

Yes, the installing and compiling is fine, even including libraries is fine. but I cant use it.

I linked CMake application to qt creator so it creates the CMake file automatically. Here is the complete code.

#include <opencv2/highgui/highgui.hpp>

#include <opencv2/core/core.hpp>

int main(int argc, const char** argv )

{

cv::Mat image = cv::imread ("/Users/Sara/Desktop/Bild.jpg");

cv::namedWindow("OpenCV first Project");

cv::waitKey(5000);

return 1;

}

really simple coding for displaying an image.

There is no detail for the errors. Its only

The problem is I cant see the details for my errors.

What is IDE?

Thanks for correction 🙂

I am using qt creator 5.3.1

Here are the details for error:

Undefined symbols for architecture x86_64:

"cv::imread(cv::String const&, int)", referenced from:

_main in main.o

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

make: *** [MyProject] Error 1

09:45:57: The process "/usr/bin/make" exited with code 2.

Error while building/deploying project MyProject (kit: Desktop Qt 5.5.1 clang 64bit)

When executing step "Make"

Thank you so much for your support.

in New project, under projects tap ---> Application and then Qt console Application. This one has the ".pro" file which has to include the opencv libraries.

(I also tried, non-qt Project ---> Plain c++ Application. But lets focus on the first one.)

Thank you so much for your support.

in New project, under projects tap ---> Application and then Qt console Application. This one has the ".pro" file which has to include the opencv libraries.

(I also tried, non-qt Project ---> Plain c++ Application. But lets focus on the first one.) I hope you still want to help me Thanks

Thanks for answering. I changed the problem so I could solve it. Qt creator and opencv are not match, I still dont know why. but I used Xcode with opencv and it works now. I gave up using qt creator.