Mike Murdoch

@mjmurdoch.bsky.social

Color Science Professor Munsell Color Science Laboratory Head of Integrated Sciences Academy RIT: Rochester Institute of Technology Former... Kodak, Philips, Eindhoven, Cornell

Yesterday in Principles of Color Science 🧪 Teaching about Color Rendition, basically how the spectral characteristics of light sources can affect object colors. Color is not just an object property, but it strongly depends on lighting, too! Here's the same sunflower under two different white lights:

(Left) Sunflower illuminated by daylight-like lighting that makes it appear yellow, and (Right) same sunflower illuminated by white light with RGB peaks that makes it appear orange

Today in Principles of Color Science 🧪 Lighting technologies including phosphor-converted (PC)-white LEDs. I keep this ~2010 remote-phosphor LED bulb around just to show how the blue LEDs stimulate fluorescence in the yellow plastic phosphor to produce white light. Today's LEDs integrate this #LED

Today in Principles of Color Science 🧪 Teaching about color measurement geometry and the effect of gloss & sheen. 45°:0° vs 8°:de vs 8°:di Ideally a measurement is representative of viewing, in which case excluding gloss is good!

Photo of a page of Berns' Principles of Color Technology with diagrams of spectrophotometer geometry, also showing a gloss series on a printed card

We’re pleased to announce that Dr. Seth Hubbard has been named Head of RIT’s School of Physics and Astronomy, starting July 1, 2025! A faculty member since 2006, he brings a wealth of expertise and proven leadership as he looks ahead to guiding the school’s growth in the years to come. #RIT #STEM

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Just back from IS&T Electronic Imaging conference in San Francisco. Lots of interesting presentations, especially one from Michael Rudd of U Nevada Reno that is relevant to my recent work on the visual effects of borders in Augmented Reality

Photo of a presentation slide by Michael Rudd, showing two disks surrounded by bright annuli, referring to a Vision Research paper from 2004, "Edge Integration Model for Disk/Annulus Display"