Presentation Abstract

Visualizing Color Volume with Gamut Rings

Color volume has emerged as a critical metric for evaluating the real-world performance of modern displays, especially as HDR content and wide color gamuts become standard. Traditional gamut measurements—based on 2D chromaticity diagrams—fall short of capturing the full visual experience of color across varying luminance levels. In this talk, we’ll explore a new approach to measuring color volume using Gamut Rings, a methodology recently adopted by RTINGS.com in their Test Bench 2.0 framework. Gamut Rings provide a more intuitive and visually meaningful representation of a display’s color capabilities in SDR and, potentially, HDR environments. We’ll examine how this method delivers new insights into display performance and helps illuminate the advantages of Quantum Dot (QD) technologies. We’ll also discuss how Gamut Rings may help bridge the gap between engineering metrics and consumer-visible performance with demonstrations.

Jeff Yurek – Vice President of Marketing · Nanosys

Jeff Yurek is Vice President of Marketing at Nanosys, the quantum dot materials company widely credited with bringing QD technology to millions of consumer displays. In this role, he has helped establish partnerships with major manufacturers including Samsung, Vizio, and Hisense.

A recognized authority on quantum dots and display technology trends, Jeff is a frequent speaker and writer on the future of displays. He also serves on several key industry committees, including the Society for Information Display (SID) and the International Committee for Display Metrology (ICDM).

Before shifting his focus to marketing, Jeff worked as a creative professional. Today, he continues to blend storytelling with technical insight to shape the narrative around cutting-edge display innovation.

Presentation Abstract

Modeling the HDR Display

As reported recently in the July/August issue of Information Display, “The Helmholtz-Kohlrausch is a perceptual phenomenon in which the perceived brightness of a color is influenced not only by its luminance—the amount of light it emits—but also by its saturation, or purity of color. In simpler terms, highly saturated colors tend to appear brighter to the human eye than less saturated ones, even if they have the exact same objective luminance measurement.”

While metrology experiments report physical capabilities, the designers who will optimize HDR performance and user experience must understand the implications of this phenomenon that eludes our equipment. The H–K effect highlights the gap between objective light measurements and subjective human perception. Relying only on wattage that may increase luminous intensity; however, it is neither subtle nor cost effective as a means to increase brightness – a perceived quantity. Owing to the H–K phenomenon, modern display technologies, especially those with wider color gamuts, such as OLED and QD-OLED displays, enhance the perception of brightness and vividness without increasing the display’s overall luminance.

We conclude by showing methods that quantify visual perception through color appearance models in 2D and 3D analyses. These tools quantify the H-Keffect and describe HDR display using volumetric uniform color space representations.

Dale Stolitzka – Affiliation: Samsung Display America Lab, San Jose, CA

Before joining Samsung, he developed mixed-signal system designs at Analog Devices, National Semiconductor, Maxtor and Raytheon. He holds a bachelor’s degree in applied physics and a master’s degree in materials science both from Cornell University.