Context: I have a video sequence of a camera moving around in a room with Apriltags (sort of QRcodes) on the walls.
I want to recognize those Apriltags using a Neural Network.
Problem is that I only have Apriltags images in my training set.
What would you suggest to recognize if an image belongs to the Apriltag class or not ?
For example if the image is a chessboard how can my NN reject this image ?