What Is the Reference? An Examination of Alternatives to the Reference Sources Used in IES TM-30-15
| Autor: | Michael P. Royer |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Illuminant D65
business.industry 0211 other engineering and technologies Standard illuminant 02 engineering and technology Color temperature 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Color rendering index Gamut Optics 021105 building & construction 0103 physical sciences Metric (mathematics) Daylight business Algorithm Energy (signal processing) Mathematics |
| Zdroj: | LEUKOS. 13:71-89 |
| ISSN: | 1550-2716 1550-2724 |
| DOI: | 10.1080/15502724.2016.1255146 |
| Popis: | This article documents the role of the reference illuminant in the IES TM-30-15 method for evaluating color rendition. TM-30-15 relies on a relative reference scheme; that is, the reference illuminant and test source always have the same correlated color temperature (CCT). The reference illuminant is a Planckian radiator, model of daylight, or combination of those two, depending on the exact CCT of the test source. Three alternative reference schemes were considered: (1) either using all Planckian radiators or all daylight models, while maintaining the CCT match of the test and reference; (2) using only one of 10 possible illuminants (Planckian, daylight, or equal energy), regardless of the CCT of the test source; (3) using an off-Planckian reference illuminant (that is, a source with a negative Duv). No reference scheme is inherently superior to another, with differences in metric values largely a result of small differences in gamut shape for the reference alternatives. Though using any of the a... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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