Installing OpenCV libraries

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Now I can understand your question. what do you mean "I did not have a system path. "? how did you install opencv?

I did installation using pre-built libraries. I have downloaded OpenCV 3.4.3 but I could not finalize installation by setting environment variable. When I typed "setx -m OPENCV_DIR D:\OpenCV\Build\x64\vc14" in command window, it said access to the path registry is denied. Plus I went to Control Panel > System Security > System > Advanced System Settings > Environment Variables > System variable however I could not find path in system variables. So may I know what to do about it?

https://docs.opencv.org/3.4.3/d3/d52/...https://docs.opencv.org/3.4.3/d3/d52/...

I don't understand "I could not find path in system variables" : you should find it

I still can't find it. I have sent OpenCV admin the video via email. You'll get what I mean. In addition, I could not upload attachment in this forum.

I have sent OpenCV admin the video via email.

that won't work. if you encounter a problem, collect TEXT information, and show us. please no videos or screenshots !

These are the variables I have found under system variables of the environment variables

• ComSpec(%SystemRoot%\system32\cmd.exe)
• DriverData(C:\Windows\System32\Drivers\DriverData)
• KICAD_PTEMPLATES(C:\Program Files (x86)\KiCad\share\kicad\template)
• MEmu_Path(C:\Program Files (x86)\Microvirt)
• PATHEXT(.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC)
• PSModulePath - (%ProgramFiles%\WindowsPowerShell\Modules) - (%SystemRoot%\system32\WindowsPowerShell\v1.0\Modules)

open a console windows and type set you should see path variables

okay. I found path variables but it is under user variable