Remote Sensing for GIS Applications: New Sensors and Analysis Methods

摘要

The advent of very high resolution (e.g., 0.6 - 1.0 m) satellite programs and, in addition, digital airborne cameras with ultra high resolution (e.g., 5-20 cm) offers new possibilities for very accurate mapping of the environment. With these sensors of improved spatial resolution, however, the user community faces a new problem in the analysis of this type of image data. Standard classification techniques have to be augmented for an appropriate analysis because the necessary homogeneity of landuse/landcover classes can no longer be achieved by the integration effect of large pixel sizes (e.g., 20 - 80 m). New intelligent techniques will have to be developed that make use of multisensor approaches, GIS integration and context based interpretation schemes. This paper will present an overview on recent developments in remote sensing and the challenges presented to the user community.