... Zimmermann and Hudson’s presentation probed how AR documentary has become a way to engage viewers on site as well as online. Their argument expands beyond conventional conceptions of AR as a mobile app to consider other ways that material and perceptual reality can be augmented by virtual and machine-generated layers through projection mapping of digital images onto physical objects such as buildings, alongside individual private AR on an app or laptop. They analyze how machine vision can visualize invisible histories, such as extinct natural and built environments as well as invisible realities such as air pollution. ...