Resolume Arena Workflow
The canonical projection mapping signal chain — from media ingest through composition, warping, and output to projectors. Each stage transforms the signal toward accurate surface registration.
MadMapper Surface Assignment
MadMapper's quad/mesh/DMX/LED surface workflow — define geometric primitives, assign media rectangles from the source, warp individual surfaces with bezier control points.
Homography & Warping
A homography is a 3×3 projective transformation matrix mapping points in one plane to another. It underpins every quad-based projection mapping system — from pinhole camera models to full 3D mesh warping pipelines.
[x', y', w'] = H · [x, y, 1]
// 3×3 Homography matrix H (8 degrees of freedom)
H = | h₀₀ h₀₁ h₀₂ |
| h₁₀ h₁₁ h₁₂ |
| h₂₀ h₂₁ 1 |
// Normalized output coordinates
xₒᵤₜ = x' / w'
yₒᵤₜ = y' / w'
// Solved via Direct Linear Transform (DLT) from 4 point correspondences
// A · h = 0, solve with SVD → smallest singular vector
P = K · [R | t]
// K = intrinsic matrix (focal length fx, fy; principal point cx, cy)
K = | fx 0 cx |
| 0 fy cy |
| 0 0 1 |
// Structured light calibration: project Gray code patterns,
// decode pixel-to-projector correspondences, solve PnP
Multi-Projector Blending
Where two projectors overlap, a gamma-corrected falloff curve ensures seamless luminance matching. Black level offset, gamma curve shaping, and color matching are essential for invisible seams.
Structured Light Calibration
Gray code patterns projected onto surfaces decode pixel-perfect correspondences between projector and camera spaces. The resulting warp mesh corrects for architectural surface irregularities at sub-pixel accuracy.
Real-Time Generative Content
TouchDesigner, VVVV, and Processing drive real-time generative visuals via Spout/Syphon into projection mapping engines. Particle systems, shader fields, and data visualizations are warped onto architectural surfaces live.
Artists & Studios
The vanguard of architectural projection — from site-specific light sculpture to real-time generative mapping on stadium-scale facades.
Projection Mapping Lexicon
Core vocabulary for projection mapping design, calibration, and production engineering.