Optimal LED Selection for Multispectral Lighting Reproduction
ACM SIGGRAPH 2016 Posters    Electronic Imaging 2017 Material Appearance Conference
Chloe LeGendre    Xueming Yu    Karla Mcguire   
USC Institute for Creative Technologies

Figure 1: Custom circuit board with 11 different LEDs (some duplicates) and their measured emission spectra.
Abstract

We demonstrate the sufficiency of using as few as five LEDs of distinct spectra for multispectral lighting reproduction and solve for the optimal set of five from 11 such commercially available LEDs. We leverage published spectral reflectance, illuminant, and camera spectral sensitivity datasets to show that two approaches of lighting reproduction, matching illuminant spectra directly and matching material color appearance observed by one or more cameras or a human observer, yield the same LED selections. Our proposed optimal set of five LEDs includes red, green, and blue with narrow emission spectra, along with white and amber with broader spectra.

Downloads

SIGGRAPH 2016 Poster Abstract
Optimal_LED_Selection-SIGGRAPH2016.pdf, (2MB)
ACM Digital Library

SIGGRAPH 2016 Poster Supplemental Material
Optimal_LED_Selection-Supplemental-SIGGRAPH2016.pdf, (2.3MB)

Electronic Imaging 2017 Material Appearance Conference
Optimal_LED_ElectronicImaging2017.pdf, (1.2MB)