The FASTRAK automatic digitising system

摘要

The FASTRAK system is an interactive line-following digitiser, scanning a reduction of a map with a laser beam. The track-following software operates by analysing the data from local raster scans into line elements and then assembling these elements into complete lines. The software is interactive and is entirely command driven, thus providing a powerful and flexible system. This paper discusses the hardware and software used, and gives performance figures for two sample maps.