The Simplest 'Hueckel' Edge Detector is a Roberts Operator
Abstract
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. The simplest case of this approach uses a 2- by-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 over CD turns out to be the Roberts operator max (abs. val. (A- D), abs. val. (B-C)).
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1979
- Accession Number
- ADA076062
Entities
People
- Azriel Rosenfeld
Organizations
- University of Maryland