Symmetry axis extraction by a neural network

  title={Symmetry axis extraction by a neural network},
  author={Kunihiko Fukushima and Masayuki Kikuchi},
This paper proposes a neural network model that extracts axes of symmetry from visual patterns. The input patterns can be line drawings, plane figures or gray-scaled natural images taken by CCD cameras. The model is a hierarchical multi-layered network, which consists of a contrast-extracting layer, edgeextracting layers (simple and complex types), and layers extracting symmetry axes. Its architecture resembles that of the lower stages of the neocognitron. The model extracts oriented edges from… CONTINUE READING