Latest Publications
This document summarizes the methods used to enhance images in order to be easily recognized by colour-deficient observers. They are classified into three major categories: recolouring, edge enhancement and pattern superposition; pros and cons are discussed. The document provides recommendations on... more
CIE Position Statement on the Use of Ultraviolet (UV) Radiation to Manage the Risk of COVID-19 Transmission
International interest in the use of ultraviolet radiation (UVR) to manage the risk of COVID-19 transmission is large and growing rapidly with each day of this global pandemic. Because of this CIE has published a Position Statement (PS) following on from the two CIE publications related to UV-C... more
This technical report provides basic measurement principles and practical guidance in goniospectroradiometry of optical radiation sources (i.e. measurement of the spectral distribution as a function of the emission angle of the source). Specifically, it includes measurement principles of the... more
AC-driven LEDs (AC LEDs) operate on AC power and may be connected directly to a mains supply without the need of any electronics (e.g. LED drivers or control gears) for converting AC power to a constant direct current. Similar to DC-driven LEDs (DC LEDs), accurate measurements of AC LEDs are also... more
Latest News and Events
This set of 19 tutorials on colorimetry and visual appearance includes tutorials on: CIE ...
Euramet, the European Association of National Metrology Institutes, in 2017 funded, within the...
A Toolbox to support the use of the international standard CIE S 026:2018 CIE System for Metrology of...
Supporting the global action to reduce the transmission of COVID-19
CIE releases two key publications...