1. A system comprising: a plurality of receptors distributed in an annular area, wherein each of the receptors has a field of view covering only a portion of an object environment, and wherein the field of view of each of the receptors overlaps with at least one of the fields of view of the other receptors; and a processing system coupled to receive image data from the receptors, wherein the processing is configured to combine image data from the receptors to construct a representation of the object environment.