lim London Imaging Meeting 2694-118X2694-118X Society for Imaging Science and Technology IS&T 7003 Kilworth Lane, Springfield, VA 22151 USA 10.2352/lim.2022.1.1.18 18 Article Colour Difference Formula for Photopic and Mesopic Vision Incorporating Cone and Rod Responses Ashraf Maliha University of Liverpool, UK Mantiuk Rafal University of Cambridge, UK Finlayson Graham University of East Anglia, UK Kucuk Abdullah University of East Anglia, UK Wuerger Sophie University of Liverpool, UK Abstract

The standard colour difference formulas, such as CIEDE2000, operate on colours defined by cone-fundamentals, which ignore the influence of rods on colour perception. In this work, we combine the rod intrusion model by Cao et al. with the popular CIEDE2000 colour difference formula and validate the accuracy of the new formula on three contrast sensitivity datasets. When compared with the standard CIEDE2000 formula, the new colour difference formula improves the perceptual uniformity of the space at low luminance levels.

 6 07 2022 3 1 79 83 This work is licensed under the Creative Commons Attribution 4.0 International License. 2022