A Playboy Based Test Target has No Place In Imaging Science

I recently attended, and volunteered to help facilitate, a short course at the Imaging Science and Technology conference "Electronic Imaging" where the very famous Lena test image was used to demonstrate various image compression concepts. In its first usage in the class, there was at least some mention of the historical context. Lena's portrait, shot …

What Is TM-30?

I love talking about color rendering. As some of the other people in my lab will attest: I frequently say it's the most important, or at least most interesting, problems in color science. I started my trajectory towards color science very young in the theatre. I started out singing and dancing in a few shows, …

Method of Spectral Optimization to Discover the Underlying Pigments in a Selection of Color Filters

Several months ago, as part of a term project in my graduate program, I was looking for a challenging problem, in a "new" area that I previously haven't really worked in. And I wanted the problem to be "optimizer friendly" because I wanted to learn about numerical optimization. I settled on trying to answer the …

LED Fixture Design – Why Lime LEDs?

A common trend in fixture design among LED lighting fixtures targeted at the entertainment lighting market is the inclusion of a lime LED. The lime LED is a blue pump phosphor converted LED which results in a broadband emission. This broadband characteristic is typically avoided by most LED buyers, who are interested in producing products …