|Optimal LED Selection for Multispectral Lighting Reproduction|
|ACM SIGGRAPH 2016 Posters / Electronic Imaging 2017 Material Appearance Conference|
|Chloe LeGendre Xueming Yu Paul Debevec|
|USC Institute for Creative Technologies|
Figure 1: Custom circuit board with 11 different LEDs (some duplicates) and their measured emission spectra.
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.
SIGGRAPH 2016 Poster Abstract:
SIGGRAPH 2016 Poster Supplemental Material:
- Light Stage X:
- Practical Multispectral Lighting Reproduction, SIGGRAPH 2016
- Efficient Multispectral Reflectance Function Capture for Image-Based Relighting, Color Imaging Conference 2016
- Light Stage 3:
- A Lighting Reproduction Approach to Live-Action Compositing, SIGGRAPH 2002
- Optimizing Color Matching in a Lighting Reproduction System for Complex Subject and Illuminant Spectra, EGSR 2003