next up previous
Next: Minimising Cost Functions Up: Extracting Curvilinear Features from Previous: Extracting Curvilinear Features from

Introduction

The work presented here is part of a project to extract vector representations of the paths of road and river networks from remotely sensed images for use in geographic information system(GIS) environments. Users of such environments often resort to digitising the required paths manually by selecting closely spaced points along the road or river; a labour intensive and error prone process.

Although various systems exist for assisting with automatic vectorisation, they are usually very expensive and still demand substantial user interaction. Our aim is to provide low cost software tools to assist with the rapid vectorisation of curvilinear features in a relatively low cost GIS workstation environment.



Mark Dobie
1999-03-04