Sensing and Spatial Response

Movement, presence, proximity and occupancy translated into stable signals that image, light, sound and interactive systems can use.

Computer-vision tracking system converting people and spatial zones into behavioural signals

Sensing the space

Sensing gives a spatial media system a live model of activity within the environment: entry, position, movement, direction, dwell, grouping, occupancy and change over time.

Refractiv defines which events matter to the experience and how they influence the media system. A response can develop gradually, remain atmospheric, follow an individual or group, or trigger a distinct state according to the character and purpose of the installation.

Lexus A-Un installation responding to visitor presence, movement and biometric input

From raw input to stable behaviour

Detection identifies people, objects or actions within the sensing field. Tracking maintains continuity over time. Filtering, calibration and behavioural logic convert that information into signals such as zone entry, dwell thresholds, direction, grouping, occupancy changes or impact events.

The visual or lighting system receives stable behavioural events generated from the sensor data. This processing keeps the interaction legible and the response controlled under changing conditions.

BMO Goal Challenge using high-speed sensing to track play in front of a large LED goal

Designed for the actual scene

Each sensing strategy is developed around the geometry, light, materials, circulation and operating conditions of the site. Sensor type, lens position, field of view, processing method, thresholds and fallback behaviour are established through testing.

Depending on the brief, the system may use computer vision, depth sensing, LiDAR, pressure, impact detection, biometric input or a hybrid approach. The selected method follows the spatial event the installation needs to understand.

Nespresso New York sensing system detecting visitor movement within the flagship interior

Scope and outputs

AreaRefractiv scope
Interaction modelDefinition of the spatial events, thresholds and response logic required by the experience
Sensor strategyTechnology selection, position, field of view, coverage, zones and operating conditions
Software developmentDetection, tracking, filtering, coordinate mapping, event generation and system communication
CalibrationScene setup, thresholds, behavioural tuning and validation under operating conditions
IntegrationStable signals for real-time visuals, lighting, sound, game logic or show control
DocumentationSensor layout, calibration settings, behaviour definitions and operational guidance

Privacy and operation

Systems can be designed around anonymous spatial events, transient track identifiers, volatile memory and event-level outputs. The sensing architecture is matched to the privacy requirements and operating model of the site.

Operational design includes startup, recovery, diagnostics and the ability to recalibrate the system as physical or environmental conditions evolve.

Applications

Sensing and spatial response support museum and exhibition installations, public art, corporate environments, interactive games, hospitality, retail and any physical space where activity should influence media behaviour.

Selected project evidence

Nespresso New York: Discreet sensing and spatial tracking used to steer a generative fluid simulation.

Lexus A-Un, Milan Design Week: Real-time visual layer responding to biometric input supplied by the installation’s wider sensing framework.

BMO Goal Challenge, Canada: High-speed ball and player sensing translated into responsive game logic across large LED environments.

For sensing strategy, interaction prototyping or spatial-response development, contact Refractiv.

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