GIVING sight to robots is an important goal, but a tricky one. Most attempts use cameras that produce the sort of image a human being is used to, and then apply computing power to simplify it (for example, by searching for the edges of objects) in ways that tell a robot what it needs to know (ie, do not blunder into that edge).
Dario Floreano of the Swiss Federal Institute of Technology, in Lausanne, has, however, taken a different approach. If simplicity is what is required, then simplicity is what needs to be supplied in the first place. Dr Floreano went to the natural world to look at a group of animals—the insects—that have often inspired robotmakers, with a view to copying the way that they organise vision. As he and his colleagues report in the Journal of the Royal Society Interface, the result is an artificial version of an insect’s compound eye.
Insect eyes are made of thousands of hexagonal columns called ommatidia, each of which focuses light through a lens down a transparent tube called a rhabdom to a set of photosensitive cells at the bottom. Such...
from The Economist: Science and technology http://ift.tt/1MpZhly
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