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2017-07-26 17:06:42 -0600

asked a question

Can I build OpenCV on my Desktop Computer from source, then transfer the build folder to a raspberry pi for use on a raspberry pi?

Hello, I have built OpenCV 3.1.0 on my Windows computer. I used python 2.7, have numpy installed, and have added a few modules from opencv_contrib. The build works on my computer in the python terminal I can import cv2 and have made a test program and that also works. I was wondering if I can zip up my build folder and transfer it to my Raspberry Pi 3, then unzip and start using OpenCV on my Raspberry Pi, or do I have to rebuild OpenCV from scratch again on my Raspberry Pi 3.

Thank you,

2017-07-12 12:09:09 -0600

asked a question

OpenCV 3.2.0 and QT implementation errors

Hello guys, I was trying to utilize screen overlays when I got an error in the console:

OpenCV Error: The function/feature is not implemented (The library is compiled without QT support) in cv::displayOverlay, file C:\build\master_winpack-build-win64-vc14\opencv\modules\highgui\src\window.cpp, line 500

I also tried to rebuild OpenCV with QT integration in CMake and this is what I got:

FP16: Compiler support is available
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:18 (find_package):
  By not providing "FindQt5Core.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt5Core", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt5Core" with any
  of the following names:

    Qt5CoreConfig.cmake
    qt5core-config.cmake

  Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set
  "Qt5Core_DIR" to a directory containing one of the above files.  If
  "Qt5Core" provides a separate development package or SDK, be sure it has
  been installed.
Call Stack (most recent call first):
  CMakeLists.txt:556 (include)


CMake Warning at cmake/OpenCVFindLibsGUI.cmake:19 (find_package):
  By not providing "FindQt5Gui.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt5Gui", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt5Gui" with any
  of the following names:

    Qt5GuiConfig.cmake
    qt5gui-config.cmake

  Add the installation prefix of "Qt5Gui" to CMAKE_PREFIX_PATH or set
  "Qt5Gui_DIR" to a directory containing one of the above files.  If "Qt5Gui"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  CMakeLists.txt:556 (include)


CMake Warning at cmake/OpenCVFindLibsGUI.cmake:20 (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.
Call Stack (most recent call first):
  CMakeLists.txt:556 (include)


CMake Warning at cmake/OpenCVFindLibsGUI.cmake:21 (find_package):
  By not providing "FindQt5Test.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "Qt5Test", but
  CMake did not find one.

  Could not find a package configuration file provided by "Qt5Test" with any
  of the following names:

    Qt5TestConfig.cmake
    qt5test-config.cmake

  Add the installation prefix of "Qt5Test" to CMAKE_PREFIX_PATH or set
  "Qt5Test_DIR" to a directory containing one of the above files.  If
  "Qt5Test" provides a separate development package or SDK, be sure it has
  been installed.
Call Stack (most recent call first):
  CMakeLists.txt:556 (include)


CMake Warning at cmake/OpenCVFindLibsGUI.cmake:22 (find_package):
  By not providing "FindQt5Concurrent.cmake" in CMAKE_MODULE_PATH this
  project has asked CMake to find a package configuration file provided by
  "Qt5Concurrent", but CMake ...

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