“…Color filters have been criticized by the users for reducing perception of other, normally unaffected, colors [11,12,5]. With further technological advances, a number of computer-based methods were created with the objective to improve color contrast between problematic colors in mobile photos and online images [6,10]. Unfortunately, existing smartphone-based CVD assistance applications [10,1] have limited usability due to the high access time (getting the phone, unlocking it, launching the app) and social issues such as unwanted attention from bystanders.…”