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. This is used by artists and advertisers alike, whether on buildings, small indoor objects, or stages, and by event planners to augment interior spaces and add experiential elements to their events. Due to the latter, projection mapping is a very interesting concept to me, and made quite simple with Mad Mapper, a small projector and practice.
For my first attempt ever at projection mapping, I set up my stage, a waist-high roller table with white paper on top, against a white wall. I assembled and stacked 6 white boxes I brought (1, 2 and 3 high) on top of the table, snug against the wall and with each other. Atop a Manfrotto tripod, I rigged an InFocus LightPro IN1142, rated at 700 lumens, which is built around a WXGA (1,280-by-800) DLP chip paired with an LED light source. Connecting the mobile projector to laptop via HDMI cord, I was able to pair my screen and interact with my design by importing videos, dragging and cropping. I used a grid in Mad Mapper to aid in lining up my elements and to determine that I had ample projection. At first, I had plans to use two projectors, one projecting from the side, and one above. I learned that one placed in between the two locations and set back a bit would suffice.