This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.

Search for Publication

Year(s) from:  to 
Keywords (separated by spaces):

The Role of Key-Points in Finding Contours

O. Henricsson and F. Heitger
BIWI-TR-149, 1993


This paper describes a method for aggregating local edge evidences into coherent pieces of contour. An independent representation of corner and junction features provides suitable stop-conditions for the aggregation process and allows to divide contours into meaningful sub-strings, right from the beginning. The active role of corner and junction points makes the contours converge onto them and greatly reduces the problems associated with purely edge-based methods. A second stage is concerned with completing established contours across regions that are less well-defined by contrast. The algorithm suggested uses the attributes of established structures (e.g. direction of termination) as well as local orientation and edge evidences to constrain possible completions in a rigorous way.

Download in postscript format
  author = {O. Henricsson and F. Heitger},
  title = {The Role of Key-Points in Finding Contours},
  year = {1993},
  number = {BIWI-TR-149},
  keywords = {segmentation,contour,key points}