Projection Mapping

'Projection mapping, also known as video mapping and spatial augmented reality, is a projection technology used to turn objects, often irregularly shaped, into a display surface for video projection. These objects may be complex industrial landscapes, such as buildings, small indoor objects or theatrical stages.' http://projection-mapping.org/whatis/

Below are some great examples, tutorials and links:

    Quick break down of the Resolume Arena interface and a look at mapping the output of a projector on to a stack of cardboard boxes.