The All of it Now team installed 6x Epson 25,000-lumen projectors with standard throw lenses to support the gx 2 projection mapping. Preparing the images for projection mapping onto the rotunda walls, with their ornate architectural features, was a complex and intricate process. The key was to build a model in 3D space of the exact dimensions of the projection surface and factor in any distortion that might occur due to unevenness or lack of flatness of the rotunda’s domed surface. To power the visuals the team utilised a gx 2 server, designed to handle real-time generative content and scale up to two 4K outputs or eight HD outputs in high resolution.
AOIN also used OmniCal, disguise’s camera-based projector calibration system, which gives users the ability to ‘see’ during the projection line up process. It captured hundreds of images of the rotunda architecture then created a ‘point cloud’ to accurately calibrate the projectors and conform surface meshes to match the real world. This workflow is a step change from the usual projection mapping workflows; since OmniCal can dramatically improve projection quality and set up time, the capture process took a matter of minutes. The team could also carry out final adjustments offline; not intervening with projection surfaces enabled other disciplines using the space to proceed with their technical work.