How to Successfully Link OpenCV and Qt Libraries in Qt Creator?

Linking OpenCV in QtCreator with Qt Library

Problem: Despite following guidance, attempts to link OpenCV and the Qt library in QtCreator have been unsuccessful.

Installation:

1. Ensure QtCreator is installed with the Qt and MinGW toolkits.
2. Download the OpenCV installer and extract it to a directory without spaces in the path.
3. Install cmake and set the PATH environment variable to include MinGW's compiler path.
4. Utilize cmake-gui to generate MinGW Makefiles and specify compiler paths.
5. Unselect "WITH_TBB," "WITH_IPP," and "WITH_CUDA" while selecting "WITH_QT" and setting "CMAKE_BUILD_TYPE" to "Debug."
6. Compile and install OpenCV by navigating to the opencv_bin directory and executing "mingw32-make" and "mingw32-make install."
7. Add the QtCreator bin path to the PATH variable.

Project Configuration in QtCreator:

1. Create a new console application.

2. Include the following line in the .pro file:

   INCLUDEPATH += C:/Programs/opencv24/opencv_bin2/install/include

3. Add the following lines to the .pro file:

   LIBS += -LC:\Programs\opencv24\opencv_bin2\bin \
   libopencv_core240d \
   libopencv_highgui240d \
   libopencv_imgproc240d \
   libopencv_features2d240d \
   libopencv_calib3d240d

4. Ensure the main.cpp file includes the necessary OpenCV headers and correctly employs OpenCV functions.

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