A Retinomorphic Sensor Network for Image Preprocessing

The mammalian retina is actually an intelligent sensor network. It is capable of extracting very rich edge information in the cortex, from the image falling on it, before transferring the computed values to the brain node, located further interior, for carrying out more sophisticated information processing tasks, and all in real time. In this paper a simple two dimensional sensor network for implementing the mammalian retina on a three-dimensional vision chip has been suggested. Although the inner layers of retina are known to elicit non-linear responses, we have shown here that even such a simple linear analogue can yield some very effective tools for the purpose of retina-like image preprocessing