The aim of this paper is to remark possibilities use WorldView-2 imagery for coastline extraction. Applications are conducted on a Phlegrean area in the Campania Region (Italy): considered range particularly interesting because it shows two typologies shoreline including reefs interspersed with segments sandy beach. Two indices used: Normalized Difference Vegetation Index (NDVI) and Water (NDWI).To enhance geometric resolution results pan-sharpening applied so as obtain maps same pixel...

This paper demonstrates that accurate data concerning bathymetry as well environmental conditions in shallow waters can be acquired using sensors are integrated into the same marine vehicle. An open prototype of an unmanned surface vessel (USV) named MicroVeGA is described. The focus on main instruments installed on-board: a differential Global Position System (GPS) system and single beam echo sounder; inertial platform for attitude control; ultrasound obstacle-detection with temperature...

The monitoring of burned areas can easily be performed using satellite multispectral images: several indices are available in the literature for highlighting differences between healthy vegetation and areas, consideration their different signatures. However, these may have limitations determined, example, by presence clouds or water bodies that produce false alarms. To avoid inaccuracies optimize results, this work proposes a new index detecting named Normalized Burn Ratio Plus (NBR+), based...

In this study, several methods to compute land surface temperatures (LST) from Landsat TM5 data are compared.Two different approaches considered.An image based approach that takes into account atmospherically corrected by using a dark object subtraction model (DOS-1) and computes the emissivity as NDVI function.The of is controlled such factors water content, chemical composition, structure roughness; it can be determined contribution components belong pixels according their proportions.NDVI...

Greenhouse detection and mapping via remote sensing is a complex task, which has already been addressed in numerous studies. In this research, the innovative goal relies on identification of greenhouse horticultural crops that were growing under plastic coverings 30 September 2013. To end, object-based image analysis (OBIA) decision tree classifier (DT) applied to set consisting eight Landsat 8 OLI images collected from May November Moreover, single WorldView-2 satellite acquired 2013, was...

The use of remote-sensing images is becoming common practice in the fight against environmental crimes. However, challenge exploiting complementary information provided by radar and optical data, more conventional sources encoded geographic systems, still open. In this work, we propose a new workflow for detection potentially hazardous cattle-breeding facilities, both synthetic aperture multitemporal data together with geospatial analyses system environment. fusion performed at feature-based...

In relation to 3D bathymetric modelling, this article aims analyze the performance of Kriging approaches in dependence location and density measured depth points. The experiments were carried out on a multi-beam sonar (MBS) dataset that includes 240,000 soundings covering sea-bottom area near Giglio Island (Italy). Seven subsets derived random way from initial regular MBS dataset, selecting an increasing number points uniformly spaced. models generated for both Ordinary Universal Kriging....

The coastal environment is a natural and economic resource of extraordinary value, but it constantly modifying susceptible to climate change, human activities hazards. Remote sensing techniques have proved be excellent for area monitoring, the main issue detect borderline between water bodies (ocean, sea, lake or river) land. This research aims define rapid accurate methodological approach, based on k-means algorithm, classify remotely sensed images in an unsupervised way distinguish body...

Abstract. Bathymetric data are fundamental to produce navigational chart and sea-floor 3D models. They can be collected using different techniques sensors on board of a variety platforms, such as satellite, aircraft, ship drone. The MicroVEGA drone is an Open Prototype Autonomous Unmanned Surface Vessel (AUSV) conceived, designed built operate in the coastal areas (0-20 meters depth), where traditional boat poorly manoeuvrable. It equipped with series acquire morpho-bathymetric high...

The purpose of this paper is to identify the burned areas that occurred in Italy during summer 2017 using change detection analysis techniques. This task possible thanks continuous, free and open availability multispectral images obtained by Sentinel-2 satellites. Indeed, comparing satellite same scene recorded at different times, it was evaluate landscape change. In paper, Direct Comparison technique applied identification area several Remote Sensing indexes. particular, order achieve aim,...

Pan-sharpening methods allow the transfer of higher resolution panchromatic images to multispectral ones concerning same scene. Different approaches are available in literature, and only a part these is included remote sensing software for automatic application. In addition, quality results supplied by specific method varies according characteristics scene; consequence, different algorithms must be compared find best performing one. Nevertheless, pan-sharpening can applied using GIS basic...

In this paper we propose a GIS-based methodology, using optical and SAR remote sensing data, together with more conventional sources, for the detection of small cattle breeding areas, potentially responsible hazardous littering. This specific environmental problem is very relevant Caserta area, in southern Italy, where many buffalo farms exist which are not even known to productive activity register, easily monitored surveyed. Experiments on test available ground truth, prove that proposed...

In the last decades, combinations of natural and humanfactors have resulted in extensive morphological changes to our coastlines andin many cases amplified erosion. order limit these theirimpact on coastal zone, it is important toplan specific actions; for this purpose detailed cognizance zone isnecessary. Different heterogeneous data such as historical recent maps,remotely sensed images topographic survey result very useful reconstructtemporal shoreline changes. study attention focalized...

The use of optical satellite sensors allows to obtain bathymetry data on large area ina short time and in a cheap way. In addition, particular places where it is difficult carry out the survey by classic methods, from can be only mode depth backdrop. So, aim this research paper analyse potential eight bands very high resolution commercial WorldView-3 (WV-3) order bathymetric data. Using WV-3 Stumpf method, intends investigate possibility obtaining specific water not particularly clear. To...

Nowadays, within the built environment, railway infrastructures play a key role to sustain national policies oriented toward promoting sustainable mobility. For this reason, institutions and infrastructure managers need increase their awareness in relation current future climate risks on representative systems. Among change impacts, preventing effects of sea-level rise (SLR) coastal is priority. The first step adaptation policy cycle development an ad hoc risk assessment. In view, research...

Abstract. The latest breed of very high resolution (VHR) commercial satellites opens new possibilities for cartographic and remote sensing applications. In this way, object based image analysis (OBIA) approach has been proved as the best option when working with VHR satellite imagery. OBIA considers spectral, geometric, textural topological attributes associated meaningful objects. Thus, first step OBIA, referred to segmentation, is delineate objects interest. Determination an optimal...

Transmitting sound waves into water, and measuring time interval between emission return of a pulse, single beam echo sounder determines the depth sea. To obtain bathymetric model representing sea-floor continuously, interpolation is necessary to process irregular spaced measured points resulting from acquisition calculate depths in unsampled areas. Several methods are available literature choice most suitable them cannot be made priori, but requires evaluated each time. This paper aims...

Italian coasts are subjected to morphological modifications that in the last decades have, many cases, been cause of considerable coast-line withdrawal.A detailed cognizance on dynamics and relative consequences territory environment is necessary plan actions for limiting these events their impacts.Reconstruction temporal shoreline changes can be realized using historical recent maps, remote sensed images topographic survey results.Because heterogeneity data, different levels accuracy must...

Abstract The acquisition of bathymetric data in shallower waters is difficult to attain using traditional survey methods because the areas investigate may not be accessible hydrographic vessels, due risk grounding. For this reason, use satellite detection depth (satellite-derived bathymetry, SDB) constitutes a particularly useful and also economically advantageous alternative. In fact, approach based on analytical modelling light penetration through water column different multispectral bands...

The purpose of this paper is to investigate the impact weights in pan-sharpening methods applied satellite images. Indeed, different data sets have been considered and compared IHS Brovey methods. first dataset contains same weight for each band while second takes account weighs obtained by spectral radiance response; these two are most common application. third set resulting a new method. It consists compute inertial moment order taking response. For testing sets, WorlView-3 images...

Orthometric heights, useful for many engineering and geoscience applications, can be obtained by GPS (Global Positioning System) surveys only when an accurate geoid undulation model (that supplies the vertical separation between WGS84 ellipsoid) is available considered topic area. Global height models (i.e., EGM2008), deriving from satellite gravity measurements suitably integrated with other data are free on web, but their accuracy often not sufficient user’s purposes. More local...

Due to their level of spatial detail (pixel dimensions equal or less than 1 m), very high-resolution satellite images (VHRSIs) need particular georeferencing and geometric corrections which require careful orthorectification. Although there are several dedicated algorithms, mainly commercial free software for geographic information system (GIS) remote sensing applications, the quality results may be inadequate in terms representation scale these intended. This paper compares most common...

Coastal and Marine Geographic Information Systems (CMGISs) permit to collect, manage, analyze a great amount of heterogeneous data concerning coastal, sea, ocean environments, e.g., nautical charts, topographic maps, remotely sensed images. To integrate those layers in CMGIS, particular attention is necessary ensure the perfect geo-localization data, which basic requirement for correct spatial analysis. In fact, above-mentioned types information sources are usually available different...