Exposes some of the available 'OpenCV' < https://opencv.org/> algorithms,
such as a QR code scanner, and edge, body or face detection. These can either be
applied to analyze static images, or to filter live video footage from a camera device.
System requirements: OpenCV 4 or newer: libopencv-dev (Debian, Ubuntu)
or opencv-devel (Fedora). The QR code detector requires at
least libopencv 4.5.2.