cv2.error: OpenCV(4.0.1-dev) /home/pi/opencv/modules/highgui/src/window.cpp:610: error: (-2:Unspecified error) The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support. If you are on Ubuntu or Debian, install libgtk2.0-dev and pkg-config, then re-run cmake or configure script in function 'cvNamedWindow'

Installation and recompilation errors based on prompts cannot be resolved. Failure to install pkg-config using compiler
  • You need to install the required packages for UI support in OpenCV. Are you running rasbian or something else ? – onion Jan 29 at 8:09
  • @onion The question has the [raspbian] tag. – Dmitry Grigoryev Jan 29 at 8:46
  • I run the code in the raspberry pie, install the software according to the error prompt, and recompile and install opencv, which is still compiling. – 黄家林 Jan 29 at 8:48
  • I confirm that libgtk2.0-dev and pkg-config are installed and that opencv is compiled and installed again. The above errors in running the code have not been resolved! – 黄家林 Jan 30 at 1:22

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