url:?https://www.pyimagesearch.com/2018/08/17/install-opencv-4-on-macos/
example, scanner
https://www.pyimagesearch.com/2014/09/01/build-kick-ass-mobile-document-scanner-just-5-minutes/
url:?https://www.pyimagesearch.com/2018/08/17/install-opencv-4-on-macos/
example, scanner
https://www.pyimagesearch.com/2014/09/01/build-kick-ass-mobile-document-scanner-just-5-minutes/