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MIDI For Trees

Forest scenes become musical data

A real-time audio-visual system that picks out individual trees in a video feed using multi-scale computer vision, reads their movement through optical flow, and maps that movement to musical scales and MIDI events. Wind-swayed branches become melodies; a forest becomes an orchestra. Ships with a visual config editor for easily making changes to MIDI For Trees' settings.

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MIDI For Trees showing note-labelled detection zones over a row of trees, with an amber movement vector drawn across them.
MIDI For Trees running on forest footage: detection zones, note labels and the measured movement vector.

See it working

MIDI For Trees Basics: Tree Regions & Movement Vectors — a walkthrough of the detection regions and the movement vectors read from them. Watch on YouTube

How it works

  • Multi-scale tree detection

    Finds individual trees whatever their distance or how densely they are packed, using multi-scale computer vision that adapts to different forest compositions and camera angles.

  • Optical flow movement analysis

    Reads the movement of each detected tree using optical flow, capturing the direction, speed and character of wind-driven motion in real time.

  • Algorithmic composition

    Maps movement to musical scales and MIDI events. The rhythm of the swaying trees drives the composition, so the music follows what the forest is actually doing.

  • Visual feedback overlays

    Configurable overlays show the analysis as it runs: tree detection regions, movement vectors and musical mappings. You can see how the visual data becomes sound.

Technical specs: what it needs, what it emits

Input
Live camera or video file
Detection
Multi-scale computer vision
Analysis
Optical flow
Output
MIDI events
Camera support
Webcam + Continuity Camera
Processor
Apple Silicon or recent Intel
RAM
16GB minimum
Platform
macOS 14+

Where it earns its place

  • Generative music installations in forests, parks, and botanical gardens

  • Studio compositions using recorded forest footage as a MIDI source

  • Environmental art projects that give voice to trees and natural spaces

  • Meditative or therapeutic sound experiences driven by nature

  • Educational tools demonstrating the connection between visual movement and sound

Interested inMIDI For Trees?

We’d love to walk you through the system, answer questions, or discuss how it fits your workflow.

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