Virtual reality systems recreate the impression of natural 3D vision, but the headsets that do this really only deliver light beams from two separate displays while in the real world light comes in from many different angles. Because the brain has to perform an unnatural reconstruction of the image, many people end up feeling nausea and fatigue while using such devices. Researchers at Stanford have developed a new way of creating virtual reality imagery that is more like what we experience in the real world, in effect reducing the sea sickness that can prevent many from using VR displays.
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The technology relies on creating a light field that mimics how the light rays would arrive at the eyes in the real world. This allows the eyes to focus in a natural, easy way, reducing how much reconstruction the brain must perform.
Here are the researchers discussing the workings of their technology: