Abies Electronicus / Space Scanner

For those interested in technical stuff,
we used MadMapper’s Space Scanner feature to produce a 1to1 pixel map of the projectors,
which simply allowed us to map during the day, safely knowing that the mapping will fit the tree.

Here are the resulting scans, shot at 1/30s or 1/60s depending on the ambiant lighting,
f2.8, iso 800, manual focus, Jpeg quality small (no Raw), using a Canon 5D mark II.

We used 4 projectors, so we produced 4 scans.

UZN: testing MadMapper’s Space Scanner

Having just one night to set up a video installation proved to be easier than expected.
With the help of MAdMapper’s Space Scanner tool, we were able to get a pixel precise view of the projection surfaces, and use this as a handy background to draw our lines and quads.
With this background, the productivity was greatly increased.
Although the lighting situation was far from prefect (no possibility to turn of the traffic lights, lots of people passing by, shaky tripod… etc), the resulting image were clean enough to be useful.
For each projector, I did 3 different shots, using different settings, then composited the 3 pictures together to keep only the cleaner parts.
Verdict: the closer you can get to ISO 100 is better, as you get less artifacts/noise.
Here’s the result: (using a triple head setup)

MadMapping Workshop #2

The coolest function of MadMapper is definetly the SpaceScanner.
It allows to turn the projector into a scanner, using a Canon camera and a structured lighting algorythm.
The result of the one-click procedure is a 2d bitmap of the projector’s point of view. Pixel accurate.