Analog network for detection of approaching object with shape recognition based on visual systems of lower animals

We propose an analog two-dimensional network for detection of an approaching object with simple shape recognition based on the visual systems of lower animals such as locusts and frogs. It was shown with the simulation program with integrated circuit emphasis (SPICE), that a proposed network constructed with simple analog circuits can detect the two-dimensional direction of an approaching object and simultaneously recognize the simple shape such as a circle, square, triangle and rectangle. The application of the network is expected to realize collision avoidance.