Digitizing features is one of the most time
consuming and tiresome aspect of creating or updating GIS data, but
nevertheless it is very essential to the process of acquiring valid GIS
data. The digitizing process can be replaced by semiautomatic methods
that significantly reduce the time spent on mapping objects. By reducing
the dependency on visual interpretation the method is cost-effective,
fast and consistent.
By applying state-of-the-art technology GRAS
extracts features from satellite images, aerial photos LIDAR data or
The features that can be mapped include:
A feature extraction solution is the ideal and most
cost-effective way of establishing vector data on basis of raster data,
such as satellite images. Semiautomatic feature extraction can be used
for several applications, e.g. change detection analysis with the
purpose of updating an existing geodatabase.The result of the mapping is
vector files in the desired format (ESRI, MapInfo etc.), thus ready for
use in GIS systems.
Please contact GRAS for further information regarding conditions and
prices for feature extraction.