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POPSBiologically Inspired Vision Systems The most effective method for getting around such problems is to train a learning algorithm on a set of images and allow it to extract the features they have in common; two wheels aligned with the road could signal a car, for example. Serre and Poggio believe that the human vision system uses a similar approach, but one that depends on a hierarchy of successive layers in the visual cortex. The first layers of the cortex detect an object's simpler features, such as edges, and higher layers integrate that information to form our perception of the object as a whole.