University of Konstanz
Graduiertenkolleg / PhD Program
Computer and Information Science

Colloquium of the Department and the PhD Program

title

Remote Sensing Archaeology: Towards semi-automated detection of archaeological residues in high resolution multispectral satellite imagery

speaker

Dr. Karsten Lambers, University of Konstanz, Germany

date & place

Wednesday, 12.11.2008, 16:15 h
Room C 252

abstract

This interdisciplinary project aims at systematically evaluating the potential of a new generation of high resolution multispectral satellite sensors for archaeological prospection. Remotely sensed imagery can be analyzed through multispectral image analysis by semantically classifying the contents of images, and through photogrammetry by extracting geometric 3D information. Both types of information allow to determine the location and nature of exposed and near-surface archaeological residues, which is the main prerequisite for the protection and management of cultural heritage. Large-scale archaeological prospection is up to now mainly based on aerial imagery. However, satellite images with a spatial resolution of 1 - 0.4 m now begin to rival aerial images. At the same time they are much easier to obtain, to geo-reference, and to analyze. They furthermore feature an additional near infrared channel that is especially susceptible to vegetational change and thus facilitates the detection of crop marks hinting at subsurface archaeological residues. While the use of high resolution multispectral imagery for archaeological prospection has recently increased, the project proposed here is intended to extend beyond the level of previous case studies. The approach will be a systematic testing of the new data source under a variety of environmental and archaeological conditions, and of semi-automated methods of digital image analysis, which are standard tools in the earth sciences. The project is thus expected to contribute to the development of efficient tools for archaeological prospection.