Search results for "Images"
showing 10 items of 460 documents
Methods and Techniques for Multi-source Data Analysis and Fusion
This work has been inspired by the recent trend in remote sensing and environmental data acquisition. Remote sensing techniques allow us to measure information about an object without touching it. In the last decades remote sensing via satellites has been used in various applications such as Earth observation, weather and storm predictive analysis, atmospheric monitoring, climate change, human-environment interactions. Sensors on airborne and satellite platforms have been recording signals from space for many years, giving rise to a huge amount of data. Some data are processed on-board but others are treated and post-processed in ground stations. Signal and image processing are widely appli…
CubeHarmonic: A new musical instrument based on Rubik{'}s cube with embedded motion sensor
2019
A contemporary challenge involves scientific education and the connection between new technologies and the heritage of the past. CubeHarmonic (CH) joins novelty and tradition, creativity and edu- cation, science and art. It takes shape as a novel musical instrument where magnetic 3D motion tracking technology meets musical per- formance and composition. CH is a Rubik’s cube with a note on each facet, and a chord or chord sequence on each face. The posi- tion of each facet is detected through magnetic 3D motion tracking. While scrambling the cube, the performer gets new chords and new chord sequences. CH can be used to compose, improvise,1 and teach music and mathematics (group theory, permu…
3D Map Computation from Historical Stereo Photographs of Florence
2018
The analysis of early photographic sources is fundamental for documenting and understanding the evolution of a city so rich in history and art as Florence. Indeed, by the 1860s several photographers used to work in town, and their images (often obtained through stereoscopic set-ups) can help us to reconstruct Florence in 3D as it was by the time of the Italian unification. The first and most delicate part of such reconstruction process is the computation of disparity maps from the historical stereo pairs. This is a very challenging task for fully-automatic computer vision algorithms, since XIX century photographs are affected by several problems—ranging from superficial damages to asynchron…
Exponential Entropy Driven HUM on Knee MR Images
2007
A very important artifact corrupting Magnetic Resonance Images is the RF inhomogeneity. This kind of artifact generates variations of illumination which trouble both direct examination by the doctor and segmentation algorithms. Even if homomorphic filtering approaches have been presented in literature, none of them has developed a measure to determine the cut-off frequency. In this work we present a measure based on information theory with a large experimental setup aimed to demonstrate the validity of our approach.
Deep Metric Learning for Histopathological Image Classification
2022
Neural networks demonstrated to be effective in multiple classification tasks with performances that are similar to human capabilities. Notwithstanding, the viability of the application of this kind of tool in real cases passes through the possibility to interpret the provided results and let the human operator take his decision according to the information that is provided. This aspect is much more evident when the field of application is bound to people's health as for biomed-ical image classification. We propose for the classification of histopathological images a convolutional neural network that, through metric learning, learns a representation that gathers in homogeneous clusters the …
Fast Volumetric Reconstruction of Human Body through Superquadrics
2013
This paper describes a technique to reconstruct the volumes of the human body. For this purpose, are introduced mathematical objects able to represent 3d shapes, called super quadrics. These objects are positioned in the space according the captures made by a Microsoft Kinect device and are composed to represent the volumes of the human body. The employment of quaternions provides a relevant speedup for the rotation of the volumes and allows to follow the human movements in real time and reduced computational cost.
La Sicilia negli Orsi di Dino Buzzati e Lorenzo Mattotti
2022
Nella fiaba illustrata di Dino Buzzati La famosa invasione degli orsi in Sicilia (1945) e nella sua trasposizione filmica ad opera di Lorenzo Mattotti (2019) l’ambientazione siciliana è determinante. In entrambi i casi la Sicilia è un’isola con un grande vulcano – trasfigurata in un ambiente fantastico o riscritta secondo alcuni stereotipi – che i due autori utilizzano con accezioni diverse nella costituzione dell’ecosistema delle loro narrazioni. Soltanto attraverso una comparazione tra le due opere sarà possibile distinguere la rappresentazione delle due Sicilie che vengono raccontate con un intervallo di circa settanta anni. Se non si considera la storia degli Orsi soltanto una fiaba per…
The Challenge of Cave Art. On the Future of Visual Culture
2016
Does it make sense to consider cave art—the art of an ancient past—a challenge for vi- sual culture as an academic discipline and as a research field? It might seem an oxymoron, or rather a boutade, a paradox. Yet there are many reasons to believe that this dive into the past in the age of new media, of digital literacy, can show us a way to the future of our discipline and that it can give us new energy for research. It certainly helps us to answer some fundamental questions that contemporary visual culture has faced in recent years—mostly in connection with its stepmother, traditional art history—if only because cave art studies inevitably shifts the research focus from the issue of Art t…
Premessa a: Cultura visuale in Italia : immagini, sguardi, dispositivi
2022
Questo volume raccoglie le riflessioni maturate durante il convegno internazionale “Cultura visuale in Italia. Prospettive della ricerca” svoltosi a Palermo tra il 19 e il 21 marzo 2018. Si è trattato di un incontro che ha visto la partecipazio- ne di molti dei protagonisti della ricerca italiana in quell’ambito “indisciplinato” – per usare una felice espressione di W.J.T. Mitchell – che è la cultura visuale, accademica e non, un campo di studi che ha ormai solide tradizioni internazionali e anche notevoli ricadute accademiche, come dimostra la presenza a Palermo di docenti che, pur provenendo da “altre” discipline, la comparatistica letteraria, l’estetica, la storia dell’arte, la mediologi…
De l’espace à l’étendue. L’évolution de l’imaginaire spatial dans l’œuvre de Saint-Exupéry
2010
L’espace chez Saint-Exupéry refuse la définition de « décor » et plus encore celle de « paysage », tout en gardant un lien fort avec les lieux concrets qui sont des repères pour l’homme. L’espace parcouru, connu dans sa matière, se révèle surtout à travers le dynamisme de l’imaginaire de l’auteur. D’après Bachelard, l’intérêt pour Saint-Exupéry « résidait dans la poétique des matières et des dynamismes ». L’espace devient le leitmotiv de son œuvre entière, ce qui nous a guidés dans la tentative d’illustrer l’évolution que celui-ci subit. Il s’agit d’un parcours pour ainsi dire « en spirale », soutenu par un tissu d’images qui s’alimente du contact avec les éléments du réel et au même temps …