The Speos human eye model then transforms spectral luminance information into perceived visual information. Speos enables accurate simulation of source emission, of light propagation, of light interaction with surfaces, and of light detection via spectral management. To be impactful, the Speos feature needed to predict what color-blind people will see in response to numerous factors, such as display brightness, resolution, contrast, and illuminance in ambient lighting conditions - all of which can have an impact on how color is perceived.įournier’s team used Ansys SpaceClaim 3D computer-aided design (CAD) modeling software in combination with Speos to do the direct modeling, and then added an extra optical layer on top of it including relevant optical properties, sensors, and light sources needed to simulate different environments. Proper use of color can enhance user experience for all drivers, with or without visual impairments. Laurent Fournier, lead electronics R&D engineer at Ansys, developed a color blindness feature within Ansys Speos optical systems software to help engineers validate optical designs that were more sensitive to drivers with color blindness.ĭesigning an in-vehicle display is a matter of ergonomics. But certain colors in GPS displays, such as route guidelines or other markers, are not always visible to color blind people depending on the colors used. So, when was the last time you actually read a road map? Most of us rely on smartphone apps like Waze or GPS systems made visible through our vehicle infotainment displays. Visualizing a More Inclusive Driving Experience Color blind people have fewer of these cones that normal, a condition that causes them to confuse colors. If you have red-green or blue-yellow color blindness, it’s because you lack specific photoreceptor cells called cones in the retinas of your eyes. Most of us are born with approximately 6 million of them2, all of which enable us to see colors of various hues as light bounces off the objects surrounding us in everyday life.
Typically our retinas contain three types of cones that respond to light at different wavelengths to help us perceive color: red-sensing cones, blue-sensing cones, and green-sensing cones. Monochromacy, or complete color blindness, is very rare, but is just what it sounds like: the inability to see color at all. Blue-yellow color blindness impacts the ability to distinguish between blue and green, or yellow and red. Red-green color blindness (the most common form) makes red indiscernible from green. This difference in perception makes it more difficult to distinguish between certain colors. Have you ever wondered what it was like to be color blind, or what a color-blind person actually sees? For the color blind, the world isn’t always black and white it’s about seeing colors differently.
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