GKC · Spatial Lighting

Good light.
The whole space.

Beyond the specifications of a luminaire.
See and measure lighting quality across an entire space.

Email us for a lighting assessment

Or use the inquiry form. Tell us about your space (school, store or restaurant) and we will reply with next steps.

Explore spatial lighting
Interior spatial lighting
BEYOND THE LUMINAIRE

The value of light. Beyond the luminaire.
A new perspective

Great specifications.
Just the beginning of good light.

Light leaves a luminaire and reflects off walls, ceilings and floors. Together, these interactions shape the luminous environment we experience. Understanding lighting quality means considering the light source, the space and the people within it.

01 / SOURCE

PointPOINT

Start with the source
Color temperature, color rendering and luminaire specifications

02 / SURFACE

PlanePLANE

Measure the working plane
Horizontal illuminance and point-by-point measurements

03 / SPACE

SpaceSPACE

Understand the spatial light field
Assess spatial brightness, glare and circadian effects

A broader perspective

Three complementary perspectives: from source specifications and planar measurements to spatial assessment.

01 · LIGHT FIELD CHARACTERIZATION

Beyond how much light.
Understand how light takes shape.

Light, visualized and structured.

Describe spatial light through diffuseness, light vector and panoramic illuminance—making its distribution and direction easier to understand and analyze.

Spatial light-field streamlines
Spatial light-field streamlinesStreamlines illustrate the direction and structure of light in three-dimensional space under different lighting arrangements.
Light density and light vectors
Light density and light vectorsDensity distributions and directional vectors offer complementary perspectives on light-field structure.

Spatial light-field characterization · Research illustrations

02 · SPATIAL BRIGHTNESS ASSESSMENT

The same luminaires.
A different sense of brightness.

Luminaire placement changes how light is distributed across surfaces. Spatial brightness approaches, including MRSE, complement working-plane illuminance measurements to better understand the experience of a room.

Four lighting arrangements in the same space
Four views of the same space under different lighting arrangements. Compare light across walls, ceiling and floor, and the overall impression of brightness.
03 · HDR PANORAMIC MEASUREMENT

Light throughout a space.
Captured as actionable data.

From panoramic capture and image reconstruction to photometric calibration, turn spatial imagery into luminance data for analysis.

  1. 01

    Multi-exposure 360° capture

    CAPTURE

    Capture the full spatial view at multiple exposures.

  2. 02

    Exposure brackets

    EXPOSURE SEQUENCE

    Preserve information in both dark and bright regions across an exposure sequence.

  3. 03

    Dual-fisheye stitching

    PANORAMIC STITCHING

    Stitch dual-fisheye images into a complete panorama.

  4. 04

    HDR merging & response correction

    HDR RECONSTRUCTION

    Merge exposures and correct camera response to recover HDR information.

  5. 05

    Absolute luminance calibration

    PHOTOMETRIC CALIBRATION

    Use photometric measurements to convert image data to absolute luminance.

↑ Calibration input: tetrahedral illuminance meterMeasured photometric data support absolute luminance calibration.

From panoramic images to spatial data.

After calibration, a panoramic luminance distribution is available for lighting analysis.

Panoramic luminance mapSpatial luminance · cd/m²
Spatial light-field representationLight information linked to direction and position
Lighting quality analysisFurther evaluation using applicable algorithms

Redrawn from the supplied HDR panoramic measurement material. This workflow describes the method and contains no fabricated measurement results.

04 · AI-ENABLED LIGHTING ASSESSMENT

Expert assessment.
Exploring a lighter approach.

The research team has developed LDR-to-HDR and spectral reconstruction networks, exploring lighting quality and non-visual effect assessment after photometric calibration, with the aim of reducing reliance on dedicated HDR equipment.

This section presents a research direction. Supported metrics, accuracy and use cases depend on calibration conditions and project-specific validation.

AI

From image information to lighting insight.

LDR imageInput
Reconstruct & calibrateProcess
Lighting assessmentAnalyze
From research to space

The science of light.
For spaces that need it.

Bring spatial assessment into the project lifecycle, from healthy, comfortable lighting design and intelligent dimming to lighting quality verification.

Ambient · Accent · Task · Decorative · Circadian lighting

01

Site survey

02

Lighting design

03

Product specification

04

Installation & commissioning

05

Verification & assessment

GKC

Better light. Tailored to your space.

Powered by lighting calculations and intelligent controls.
Turnkey services, from site survey to installation, commissioning and verification.

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