Pablo Valbuena is a Spanish artist that since 2007 has been working with Augmented Reality. He developed his first projects in the Medialab-Prado in Madrid.
His projects deal with the idea of extending physical space with
perception: "I am interested in using light
as a physical material, suitable for building space like concrete or
bricks. I use video projection with perspective and anamorphosis
techniques to build ‘perceptual extensions’ of the actual physical
space, extending the limits of what is physically real to what is
Augmented space is overlapping real architecture with a
layer of projected content: when projecting the same physical geometry on top
of itself, the light qualities of the projection get altered, and it is possible to "physically change how space is perceived".