With the growing use of digital map data, the requirements for frequent and efficient revision of digital map databases is equally growing. Revision of map databases can be divided into 3 steps: Change detection, classification of changes and registration/updating of the thematic layers of the database. Often the change detection step is carried out in an entirely manual workflow, which calls f...

Abstract Morphometric analysis is a powerful tool to understand the hydrological process quantitatively and main requirement determine characteristics of watershed. drainage Sedayu River Sub-watershed, Semaka District, Tanggamus Regency, Lampung Province was carried out using Digital Elevation Model (DEM) data. The primary data used aerial photography drones, location photos representing waters...

Anders Hast, Uppsala University, Sweden, [email protected] Carlotta Capurro, Visual Dimension, Belgium Dries Nollet, Visual Dimension, Belgium Daniel Pletinckx, Visual Dimension, Belgium Benito Vilas Estevez, Universidad de Gales Trinity Saint David, Spain Miguel Carrero Pazos, Universidade de Santiago de Compostela, Spain Jose María Eguileta Franco, Sección de Arqueoloxía, Concello de Ouren...

land use change may influence many natural phenomena and ecological processes, including runoff, soil erosion, sedimentation and soil conditions. decreasing of forest area in the north of iran is one of the critical problems in recent years. the aims of this study are to detect land use changes between 1967 to 2002 using satellite images of land sat 7 etm+ (2002), aerial photos and digital topo...

Scenes and objects represented in photos have causal relationship to the places where they are taken. In this paper, we propose using geo-information such as aerial photos and location-related texts as features for geotagged image recognition and fusing them with Multiple Kernel Learning (MKL). By the experiments, we have verified the possibility for reflecting location contexts in image recogn...

Traditional aerial-triangulation has long relied on control points orientating the photo models into a ground-based coordinate system, reducing the distortion effect when tying photos by imperfect photo measurements, and calibrating camera inner parameters. Field surveying preparing for adequate number of control points and manual measurements of the control points afterwards on the photos cost...

Historical aerial photographs dramatically document changes in Florida’s land use. Between 1938 and 1971, the U.S. Department of Agriculture (U.S.D.A.) created more than 88,000 black and white, 9 x 9 aerial photographs with 2,500 accompanying photomosaic indexes (19381971) of Florida. Flight lines were county based and each flight created dozens of individual aerial photographs, or tiles. Due t...

the kind of land use and intensity of its change is considered as important desertification indices in different models. land use change is one of the main anthropogenic factors in the desertification. the current research was carried out around imam khomeini airport, with an area of 32000 km2, in order to evaluate mentioned area's land use changes effects during 1955-2003 on desertification. t...