Light diffuseness metric, Part 2: Describing, measuring and visualising the light flow and diffuseness in three dimensional spaces

Ling Xia, Sylvia Pont, Ingrid Heynderickx

Research output: Contribution to journalArticleScientificpeer-review

11 Citations (Scopus)

Abstract

We introduce a way to simultaneously measure the light density, light vector and diffuseness of the light field using a cubic illumination meter based on the spherical harmonics representation of the light field. This approach was applied to six light probe images of natural scenes and four real scenes built in our laboratory, and the results were compared to those obtained using Cuttle’s method. We also demonstrated a way to simultaneously and intuitively visualise the global structure of the light distribution using light tubes and colour coding for the light density, light flow and diffuseness variations through the space. Together with Mury’s work, we have a complete way to describe, measure and visualise the local and global low-order properties of light distributions in three-dimensional spaces.
Original languageEnglish
Pages (from-to)428-445
Number of pages18
JournalLighting Research and Technology
Volume49
Issue number4
DOIs
Publication statusPublished - 2017

Fingerprint Dive into the research topics of 'Light diffuseness metric, Part 2: Describing, measuring and visualising the light flow and diffuseness in three dimensional spaces'. Together they form a unique fingerprint.

  • Cite this