Automatic target recognition (ATR) systems, like human photo-interpreters, rely on a variety of visual information for detecting, classifying, and identifying manmade objects in aerial imagery. We describe the integration of a visual learning component into the Image Data Conditioner (IDC) for target/clutter and other visual classification tasks. The component is based on an implementation of a...

The knowledge of the surface topography has a major importance in the field of Earth sciences. It is essential in any discipline concerned with process modeling like hydrology, climatology, geomorphology and ecology. The present study utilized Environmental Systems Research Institute’s (ESRI) ArcGIS 9.3 (with the spatial analyst extension) software, remote sensing data ( DEM and Digital Aerial ...

Recently, radiometric image homogenization techniques have been thoroughly studied among the digital mapping techniques. The main characteristics of digital image balancing methods ⎯ vignetting and hot spot minimization, as well as color homogenization ⎯ were inherited from photo laboratory techniques. However, the current digital image balancing processing uses mathematical modeling of matrice...

In our paper we use neural networks for tuning of image feature extraction algorithms and for the analysis of orthophoto maps. In our approach we split an aerial photo into a regular grid of segments and for each segment we detect a set of features. These features describe the segment from the viewpoint of general image analysis (color, tint, etc.) as well as from the viewpoint of the shapes in...

The goal of this research is to test an empirical line radiometric calibration of airborne digital scanner ADS40 data from Leica Geosystems, for remote sensing applications in general and to demonstrate the potential of ADS40 data for archaeological prospection in detail. In this study we present the first results of multitemporal flight campaigns with two different generations of ADS40 sensor ...

All the stops for this trip are within the Crown Point Reservation State Historic Site. From the west, take NY Route 22 north from Ticonderoga, continuing north through the Village of Crown Point. Turn east approximately five miles north of the Village of Crown Point, following signs to the 'Bridge to Vermont'. From the east, take VT Route 22A north from Fairhaven, or south from Burlington area...

Vegetation mapping of national park units in the southeastern United States is being undertaken by the Center for Remote Sensing and Mapping Science at the University of Georgia. Because of the unique characteristics of the individual parks, including size, relief, number of photos and availability of ground control, different approaches are employed for converting vegetation polygons interpret...

Recent work in computer vision has demonstrated the potential to automatically recover camera and scene geometry from large collections of uncooperatively-collected photos. At the same time, aerial ladar and Geographic Information System (GIS) data are becoming more readily accessible. In this paper, we present a system for fusing these data sources in order to transfer 3D and GIS information i...

An approach for generating realistic 3D models of natural landscapes from overlapping aerial images is presented. Based on stereoscopic correspondence analysis a 3D terrain model is computed. The 3D reconstruction of a scene from 2D projections is underconstrained and details are lost due to occlusion and image resolution. The ambiguity and lack of detail is overcome by integrating a priori kno...

Image-based modeling techniques [1], [2], [3] can now generate photo-realistic 3D models from images. But it is up to users to provide high quality images with good coverage and view overlap, which makes the data capturing process tedious and time consuming. We seek to automate data capturing for image-based modeling. The core of our system is an iterative linear method to solve the multi-view ...