Seeing Geodesy clearly: suitable colours for effective and inclusive visualization

Rebekka Steffen, Fabio Crameri Seeing Geodesy clearly: suitable colours for effective and inclusive visualization Full colour vision Deuteranopia (green-blindness) Protanopia (red-blindness) Monochromacy (total colour blindness) Colour vision deficiency (CVD) is a condition where a person has difficulty distinguishing certain colours, most often red and green, due to differences or absence in the cone cells of the eye responsible for detecting colour. CVD can be inherited from birth – typically affecting more men than women – or acquired later in life as a result of aging, eye disease, injury, or certain medications. There are several types of CVD, including red-green, blue-yellow, and complete colour blindness, each affecting colour perception in different ways. Ishihara colour test plates can be used to test the colour vision Prevalence of different types of colour vision deficiency (CVD) in men and women based on Deeb (2005). COLOUR VISION DEFICIENCY (CVD) Ishihara colour test plates, a common tool used to screen for CVD using patterns of coloured dots that form numbers or shapes. Simulated plates obtained using Pilestone. EXAMPLES FROM GEODESY Commonly used Deuteranopia/Protanopia Monochromacy Improved visualisation GNSS timeseries of a European station, elevation data from GDEMM2024, geoid from EIGEN-6C4 and InSAR interferogram from the Tibet earthquake 2021. Simulated figures obtained using Pilestone.