WAVGEN — Projection Mapping AV World

§ 02 — SOFTWARE PIPELINE

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.

Media Sources

Video files, NDI, Syphon/Spout, generative layers, MIDI/OSC triggers

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Composition

Layer blending, effects chain, temporal sync, BPM-locked animation

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Output Transform

Advanced output, slice mapping, warp mesh, edge blend zones

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Projector Output

HDMI/DP signal to projectors, PJLink control, brightness calibration

OSC/MIDI In

Ableton Link, TouchOSC, lighting desk, sensor data streams

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Parameter Map

Effect parameters, clip launchers, layer opacities bound to controllers

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Render Engine

GPU-accelerated HAP codec playback, GLSL shader effects, warp compute

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Monitor Preview

Operator display with surface overlay, warp grid handles, blend indicators

RESOLUME SIGNAL FLOW VISUALIZER

§ 03 — SURFACE MAPPING

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.

SURFACE WARP PREVIEW

MEDIA SOURCE ASSIGNMENT

WARP PARAMETERS

Mesh Subdivisions6

Bezier Tension0.50

Corner Pin X0

Corner Pin Y0

KEYSTONE CORRECTION

Horizontal Key0

Vertical Key0

Rotation0°

Zoom1.00

§ 04 — PROJECTION MATHEMATICS

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.

// Homogeneous point transformation [x', y', w'] = H \cdot [x, y, 1] // 3\times3 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 \cdot h = 0, solve with SVD \to smallest singular vector

HOMOGRAPHY TRANSFORM DEMO

CAMERA-PROJECTOR CALIBRATION

// Projector model: perspective projection P = K \cdot [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

§ 05 — EDGE BLENDING

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.

LIVE EDGE BLEND VISUALIZER — MOVE CURSOR OVER CANVAS

BLEND ZONE

Overlap Width140px

Gamma Curve2.2

Black Level8

Blend Softness60%

COLOR MATCHING

R Gain Left1.00

G Gain Left1.00

B Gain Left1.00

Gamma Exp2.2

4-PROJECTOR TILED ARRAY WITH BLEND ZONES

§ 06 — GEOMETRY CORRECTION

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.

GRAY CODE PATTERN SEQUENCE

DECODED CORRESPONDENCE MAP

WARP MESH CORRECTION GRID

CALIBRATION METRICS

Reprojection Error

0.4 px

Correspondence Coverage

97.2%

Geometric Distortion

-0.3 %

Color Delta E

ΔE 1.2

Frame Sync Accuracy

±0.1 ms

§ 07 — GENERATIVE PROJECTION

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.

PARTICLE SYSTEM → SURFACE MAPPED — MOVE CURSOR

SHADER FIELD (DOMAIN WARPING)

OSC PARAMETER STREAM

PARTICLE PARAMS

Particle Count200

Life Span80

Force Field0.40

Color Shift300°

SURFACE WARP

Warp Intensity50%

Noise Scale60

Time Speed0.60

Blend ModeADD

§ 08 — PRACTITIONERS

Artists & Studios

The vanguard of architectural projection — from site-specific light sculpture to real-time generative mapping on stadium-scale facades.

§ 09 — GLOSSARY

Projection Mapping Lexicon

Core vocabulary for projection mapping design, calibration, and production engineering.

PROJECTION MAPPING