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Graphical User Interface: QT

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Andrews Sobral edited this page Mar 7, 2020 · 10 revisions

BGSLibrary v2.0.0 with QT GUI

BGSLibrary QT GUI

Building QT GUI from scratch

  • Dependencies:

    • OpenCV 2.x or 3.x (Tested with OpenCV 3.2.0)
    • Qt 5 library (Tested with Qt 5.6.2)

On Windows (with CMAKE and Visual Studio 2015 x64)

  1. Click on 'Qt 5.6 64-bit for Desktop (MSVC 2015)'

  2. Go to bgslibrary/gui_qt/build folder.

  3. Set your OpenCV PATH:

set OpenCV_DIR=C:\OpenCV3.2.0\build
  1. Launch CMAKE:
cmake -DOpenCV_DIR=%OpenCV_DIR% -G "Visual Studio 14 Win64" ..
  1. Include OpenCV binaries in the system path:
set PATH=%PATH%;%OpenCV_DIR%\x64\vc14\bin

  1. Open the bgslibrary_gui.sln file in your Visual Studio and switch to 'RELEASE' mode

  2. Click on 'ALL_BUILD' project and build!

  3. Go to bgslibrary/gui_qt/build/Release and copy bgslibrary_gui.exe to bgslibrary/.

  4. Run bgslibrary_gui.exe and enjoy! ;-)

On Linux or Mac OS X

  • Installing dependencies on Mac OS X:
brew install opencv3 --with-ffmpeg --with-qt5 --HEAD
brew link --overwrite --dry-run opencv3
  • Step-by-step Instructions
git clone --recursive https://github.com/andrewssobral/bgslibrary.git

cd bgslibrary/gui_qt/build
cmake ..
make

cp bgslibrary_gui ../../ 

./bgslibrary_gui

BGSLibrary QT GUI

(Video) Build & Execute BGSLibrary QT GUI on MacOSX using CMake

https://youtu.be/vl0c-mXWQEo

  • Possible issues:

If you have something like this:

CMake Warning at CMakeLists.txt:33 (find_package):
  By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project
  has asked CMake to find a package configuration file provided by
  "Qt5Widgets", but CMake did not find one.

  Could not find a package configuration file provided by "Qt5Widgets" with
  any of the following names:

    Qt5WidgetsConfig.cmake
    qt5widgets-config.cmake

  Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set
  "Qt5Widgets_DIR" to a directory containing one of the above files.  If
  "Qt5Widgets" provides a separate development package or SDK, be sure it has
  been installed.


CMake Error at CMakeLists.txt:44 (QT5_ADD_RESOURCES):
  Unknown CMake command "QT5_ADD_RESOURCES".


-- Configuring incomplete, errors occurred!

You just need to specify the PATH of your QT installation, for example:

On Linux: cmake .. -DCMAKE_PREFIX_PATH=$HOME/Qt/5.12.1/gcc_64

On MacOS: cmake .. -DCMAKE_PREFIX_PATH=$HOME/Qt/5.13.0/clang_64

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