How to Integrate OpenCV with Qt Creator and Utilize Qt Libraries?
Dec 04, 2024 am 03:55 AMLinking OpenCV to QtCreator and Utilizing Qt Libraries
Introduction
This tutorial aims to provide a comprehensive guide to linking OpenCV with QtCreator and successfully utilizing the Qt library.
Installation Prerequisites
- Qt 5.0.1 for Windows 32-bit (MinGW 4.7)
- OpenCV-2.4.0.exe
- cmake-2.8.10.2-win32-x86.exe
OpenCV Installation
- Extract OpenCV-2.4.0.exe to C:Programsopencv24.
- Create an additional folder C:Programsopencv24opencv_bin.
- Set the PATH environment variable to include the MinGW compiler bin directory.
-
Run cmake-gui.exe and configure the following:
- Source code: C:Programsopencv24opencv
- Binaries: C:Programscopencv24opencv_bin
- Specify native compilers: C:/Programs/Qt/Qt5.0.1/Tools/MinGW/bin/gcc.exe for C and C:/Programs/Qt/Qt5.0.1/Tools/MinGW/bin/g .exe for C
- Ensure that WITH_QT is selected and WITH_TBB, WITH_IPP, and WITH_CUDA are unselected
- Set CMAKE_BUILD_TYPE to "Debug"
Linking to QtCreator Project
- Create a new QtCreator console application.
-
Add the following lines to the .pro file:
- INCLUDEPATH = C:/Programs/opencv24/opencv_bin2/install/include
- LIBS = "C:/Programs/opencv24/opencv_bin2/bin/*.dll"
-
In the main source file:
-
Include OpenCV headers:
- #include "opencv2/core/core.hpp"
- #include "opencv2/highgui/highgui.hpp"
- #include "opencv/cv.h"
-
Add the necessary libraries:
- `LIBS = -LC:Programsopencv24opencv_bin2bin
libopencv_core240d
libopencv_highgui240d
libopencv_imgproc240d
libopencv_features2d240d
libopencv_calib3d240d`
- `LIBS = -LC:Programsopencv24opencv_bin2bin
-
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