A statistical framework based on a family of full range autoregressive models for edge extraction
Pattern Recognition Letters
An edge detection algorithm based on the multi-direction shear transform
Journal of Visual Communication and Image Representation
Some properties of Hueckel-type edge operators
Pattern Recognition Letters
On edge gradient approximations
Pattern Recognition Letters
Hi-index | 0.14 |
Hueckel's edge detector finds the best-fitting ideal step edge to a given picture neighborhood by expanding the neighborhood and step edge in terms of a set of nine basis functions. A very simple case of this approach uses a 2 脳 2 neighborhood and three basis functions. This case is solved explicitly using elementary methods. The magnitude of the best-fitting step edge for the neighborhood AB CD turns out to be the Roberts operator max (|A - D|, |B - C|).