A Colour Conversion Method Which Allows Colourblind and Normal-Vision People Share Documents with Colour Content (画像技術特集)
Po‐Chieh Hung, Naoko Hiramatsu · Konica-Minolta Technology Report · 2013
CIE Division 8 currently covers colour imaging for people with normal colour vision. We propose to start a study on how to convert a colour image, especially graphs and letters, into a form that can be viewed by both colourblind as well as normal-vision people, without a sense of discomfort. As a starting point, we will propose a conversion method for colour graphic images and letters. We employed hatching-accumulation on colour area in order to be distinguished by colour blind. The hatching is designed to have specific angle according to the chromaticity on confusion line. The colourblind are expected to distinguish the undistinguished colour by angle. We have tested it with actual colourblind (protanope and deuteranope) using colour graphic and text, and have confirmed that, by adding the hatching pattern, it is distinguished nearly 100%.