Personalized Digital Image Display for Various Types of Colour Vision Deficiencies

Colour vision deficiency is the inability to distinguish certain colours or shades that people with normal colour vision can easily recognize. This article presents a software solution that allows individuals with colour vision deficiency to personalize digital images, thereby facilitating their daily challenges. The purpose of the solution is to enable users to understand the visual context with minimal interference to the original image. The solution includes a quick test to determine which colours are confusing to the user. The recolouring is content-dependent. We extract representative colour centres from the image and, based on the colour blindness test, identify colour pairs that are difficult for the user to distinguish. For confusing colour centres, we use an optimization process to find replacement colours that change the appearance of the image as little as possible and at the same time adjust the confusing segments so that they become clearly distinguishable to the user. The results obtained are promising.