Search results for "vision"
showing 10 items of 5066 documents
Lidar detection of carbon dioxide in volcanic plumes
2015
Volcanic gases give information on magmatic processes. In particular, anomalous releases of carbon dioxide precede volcanic eruptions. Up to now, this gas has been measured in volcanic plumes with conventional measurements that imply the severe risks of local sampling and can last many hours. For these reasons and for the great advantages of laser sensing, the thorough development of volcanic lidar has been undertaken at the Diagnostics and Metrology Laboratory (UTAPRAD-DIM) of the Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA). In fact, lidar profiling allows one to scan remotely volcanic plumes in a fast and continuous way, and with high s…
Il ruolo di Google Earth e OpenStreetMap nella partecipazione civica al processo decisionale
2013
Lo sviluppo dei GIS, delle mappe informatiche e di strumenti di georeferenziazione condivisi via web è un fenomeno di notevole importanza nel panorama delle trasformazioni culturali odierne, le quali riguardano non solo la rappresentazione dello spazio ma soprattutto la sua interpretazione e il modo in cui viene vissuto e percepito dai suoi abitanti. Ad uno spazio fisico sempre più frammentato corrisponde uno spazio virtuale policentrico, costruito a più livelli da utenti che sono sia fruitori che produttori di informazione. Un esempio di questo processo è il software Google Earth: da un lato esso veicola la diffusione di una delle infinite, possibili immagini virtuali dello spazio, che nel…
Materiali per una crisi: teorema del serializzante nell’epoca della video-guerra civile
2015
Starting from a brief de-functionalizing analysis of the info-spectacular society, the essay explores the pervasiveness of the repressive-disciplining forms which are increasingly affecting the behaviors of the individualities in the info-spherical dominion. In particular, the paper focuses on what will be defined the “serializing” and highlights some repetitive-determinant aspects of the video-seriality that are involved in the processes of “over-codification” imposed by the infosphere on the anthropo-sphere. In order to define the serializing will be taken in exam both the possible evolutions of the Gelassenheit and the “dispositiviness” imposed by info-securitarian post- democracies thro…
Webcam based display calibration
2012
International audience; We present an automatic method for measuring the tone response curve of display devices based on visual methods, where the eye is replaced by an end-user, uncalibrated camera, such as a webcam. Our approach compares a series of halftoned patches of known covering ratio with a continuous series of tone patches for each ratio. Both patches are shot by a camera that is used as a virtual eye to evaluate the luminance difference. By an iterative process, the continuous tone value is adjusted while compared with the perceived level of the halftoned patch. When the camera does not see any difference between the patches or a minimal difference, the luminance level of the con…
The Trope of Sight in North American Whiteness Studies
2017
The trope of sight has been the central metaphor in North American whiteness studies sińce its very inception, that is, already before whiteness studies emerged as a separate field of study. The centrality of the trope stems not only ffom a particular applicability of the sight metaphor to render subject-object relations, but also ffom the unique presence of “sight” in the very relations between racial groups in the United States, in particular Alfican Americans, and whites. Originally, minorities were cast as objects of the gaze, while white people as subjects of the gaze, exercising the power to look, survey and pass judgment. Apart ffom exposing practices of looking employed by whites, w…
Energy Efficient Optimization for Wireless Virtualized Small Cell Networks With Large-Scale Multiple Antenna
2017
Wireless network virtualization is envisioned as a promising framework to provide efficient and customized services for next-generation wireless networks. In wireless virtualized networks (WVNs), limited radio resources are shared among different services providers for providing services to different users with heterogeneous demands. In this paper, we propose a resource allocation scheme for an orthogonal frequency division multiplexing-based WVN, where one small cell base station equipped with a large number of antennas serves the users with different service requirements. In particular, with the objective to obtain the energy efficiency in the uplink, a joint power, subcarrier, and antenn…
Underwater Multirobot Cooperative Intervention MAC Protocol
2020
This work introduces a Medium Access Control (MAC) protocol designed to allow a group of underwater robots that share a wireless communication channel to effectively communicate with each other. The goal of the Underwater Multirobot Cooperative Intervention MAC (UMCI-MAC) protocol presented in this work is to minimize the end to end delay and the jitter. The access to the medium in UMCI-MAC follows a Time Division Multiple Access (TDMA) strategy which is arbitrated by a master, which also has the capability to prioritize the transmission of some nodes over the rest of the network. Two experiments have been carried out with a team of four Autonomous Underwater Vehicles (AUV) in order to comp…
The role of the agreement as a tool for management of property relations in cases of cross border marriages and civil unions/partnerships registered …
2021
The essay examines the role of the agreement as a tool for managing property relationships in crossborder marriages and registered partnerships, in light of EU Regulations 1103 and 1104 of 2016, on the property regimes of international married or registered couples. The main prerogative of such acts is the recognition of the parties? freedom to choose the court and the applicable law. The law governing the matrimonial property regimes, or the property consequences of registered partnerships, has universal scope. This agreement in the form envisaged, which is backed by the need for legal certainty and predictability of the applicable rules, means that the spouses, in family problems which ha…
Modelling and analysing oriented fibrous structures
2014
Abstract. A mathematical model for fibrous structures using a direction dependent scaling law is presented. The orientation of fibrous nets (e.g. paper) is analysed with a method based on the curvelet transform. The curvelet-based orientation analysis has been tested successfully on real data from paper samples: the major directions of fibrefibre orientation can apparently be recovered. Similar results are achieved in tests on data simulated by the new model, allowing a comparison with ground truth. peerReviewed
Knowledge organization for modelling workflows in Taverna environment
2014
Today Workflow Management Systems (WFMS), like Taverna and Kepler, have a very important place in the everyday work of the scientist. These tools support the access to computational resources and act as interface for building complex data processing chains. The next step is to support decisions of the researcher on autonomously developing workflow parts guided by requirements of the scientist while she/he is working on the high-level goal of the experiment. To this aim, it is necessary an ontology to store the knowledge related to the experiments and tools used, and to make this knowledge available not only to the scientist, but also to a suitable artificial intelligent system. In this pape…