Simple Nonlinear Dual Window Operator for Edge Detection

  title={Simple Nonlinear Dual Window Operator for Edge Detection},
  author={Eugenio Di Sciascio and Cataldo Guaragnella},
We propose a nonlinear edge detection technique based on a two concentric circular windows operator. We perform a preliminary selection of edge candidates using standard gradient and use the dual window operator to reveal edges as zero-crossing points of a simple difference function only depending on the minimum and maximum values in the two windows. Comparisons with other well-established techniques are reported in terms of visual appearance and computational eff iciency. They show that… CONTINUE READING