Search results for "CAMERA"
showing 10 items of 290 documents
Stato, Tecnologia, Capitale. Una storia europea.
Il lavoro si propone di rintracciare i costituenti storici, ideologici ed operativi del processo di lavoro capitalistico; sino ad arrivare al contemporaneo concetto di meccanizzazione. In quest'ipotesi, muove dalla costruzione politica dello Stato moderno per come si è configurata nell'europa germanica e scandinava, con particolare riguardo alla Frihetstiden svedese e al cameralismo. Infine, prova a verificare sul terreno della fabbrica automobilistica attuale la realizzazione dei presupposti teorici in merito alla manipolazione della forza-lavoro, così come elaborati dai teorici cameralisti; nella misura in cui questi presupposti siano filtrati in modo implicito nella concezione marxiana d…
Random wave run-up with a physically-based Lagrangian shoreline model
2014
Abstract In the present paper the run-up of random waves was calculated by means of a numerical method. In situ measurements based on a video imaging technique have been used for the validation of the present numerical model. The on-site run-up measurements have been carried out at Lido Signorino beach, near Marsala, Italy,along a transect, normal to the shore. A video camera and a linear array of rods have been used to obtain field data. Numerical simulations with a 1DH Boussinesq-type of model for breaking waves which takes into account the wave run-up by means of a Lagrangian shoreline model have been carried out. In such simulations random waves of given spectrum have been propagated in…
Gli ingegneri camerali in Sicilia dopo il terremoto del 1823
2016
La memoria intende indagare, attraverso lo studio delle fonti bibliografiche e soprattutto di una copiosa documentazione archivistica, il ruolo determinante svolto dalle istituzioni attraverso l’attività degli ingegneri camerali, tecnici alle dirette dipendenze dell’amministrazione regia, tra i quali emergono alcuni tra i professionisti più attivi del tempo quali Luigi Speranza, Giuseppe Patti e Alessandro Emmanuele Marvuglia. Questi ultimi vennero incaricati di effettuare numerosi sopralluoghi nelle zone colpite dal terremoto al fine di valutare e monitorare i danni, redigendo sia quadri di carattere generale relativi ai singoli centri, che perizie di dettaglio volte all’accertamento dei d…
Configurable Passband Imaging Spectrometer Based on Acousto-optic Tunable Filter
2008
This work presents a new configurable imaging spectrometer called Autonomous Tunable Filtering System (ATFS). The system can be configured to acquire a single narrow spectral band, a composite multispectral image, or a broad pass-band. This flexibility is given by the use of an Acousto-Optic Tunable Filter (AOTF) driven by a programmable radio frequency (rf) signal generator. The AOTF acts as a light-diffraction element which output wavelength is selected by the frequency of an rf signal applied to it. The designed rf driver is based on a high-speed Digital-to-Analog converter, which can synthesize any composite rf waveform formed by a combination of sine signals. The images are formed thro…
Energy balance in single exposure multispectral sensors
2013
International audience; Recent simulations of multispectral sensors are based on a simple Gaussian model, which includes filters transmittance and substrate absorption. In this paper we want to make the distinction between these two layers. We discuss the balance of energy by channel in multispectral solid state sensors and propose an updated simple Gaussian model to simulate multispectral sensors. Results are based on simulation of typical sensor configurations.
Real-time High Dynamic Range based on Multiple Non Destructive ReadOut during a Single Exposure
2017
This paper presents a new method based on Non Destructive Readout (NDRO) to improve multi-exposure High Dynamic Range (HDR) Imaging. A sequence of Low-Dynamic Range (LDR) images can then be acquired during a single exposure. The concept enables the latency between LDR images to be removed as well as the intrinsic ghost artifacts observed using state-of-art HDR systems based on multi-exposures. The method has been applied to improve the performances of HDR sensor based on logarithmic pixels. Using the NDRO method, a Short Wave InfraRed (SWIR) camera has been designed to produce HDR IR videos. A real-time HDR video stream generation is achieved based on GPU implantation.
Una città per le regine. Istituzioni e società a Siracusa tra XIII e XV secolo.
2012
Il Medioevo siracusano prende forma attraverso uno studio storico-archivistico che delinea le dinamiche politico-economiche che hanno attraversato la città tra la fine del XIII e gli inizi del XV secolo. Si tratta di una ricerca sulle articolate relazioni tra l'Universitas,la Corona, le comunità ebraica e straniere, ma anche di un'indagine su Siracusa città reginale, territorio cioè della Camera delle regine di Sicilia, e sulle implicazioni generate da tale condizione. L'analisi delle ricadute che tali interazioni hanno avuto sull'amministrazione, sull'economia,sul tessuto sociale e urbano siracusano -tra fratture e continuità, crisi e rinnovamento- ha consentito di tracciare la storia di S…
Système de vision à haute gamme dynamique auto adaptable
2020
High dynamic range (HDR) image generation using temporal exposure bracketing is widely used to recover the whole dynamic range of a filmed scene by fusion of two or more low dynamic range (LDR) images. Temporal exposure bracketing technique should be employed for static scenes and it cannot be applied directly for dynamic scenes. Motions introduced by moving objects in the LDR stack images create ghosts artifacts in the reconstructed HDR image. In this thesis, we have studied and evaluated a large nuber of algorithms used to correct or avoid these artifacts and we mad a trade-off between robustness and complexity in order to propose a real-time HDR video generation system.The real-time HDR …
Novel approach to study the perception of animacy in dogs.
2017
Humans tend to perceive inanimate objects as animate based on simple motion cues. So far this perceptual bias has been studied mostly in humans by utilizing two-dimensional video and interactive displays. Considering its importance for survival, the perception of animacy is probably also widespread among animals, however two-dimensional displays are not necessarily the best approach to study the phenomenon in non-human species. Here we applied a novel method to study whether dogs recognize a dependent (chasing-like) movement pattern performed by inanimate agents in live demonstration. We found that dogs showed more interest toward the agents that demonstrated the chasing-like motion, compar…
A new method for linear affine self-calibration of stationary zooming stereo cameras
2012
This paper presents a simple, yet effective, method to recover the affine structure of a scene from a (stereo) pair of stationary zooming cameras. The proposed method solely relies on point correspondences across images and no knowledge about the scene whatsoever is required. Our method exploits implicit properties of the projective camera matrices of zooming cameras and allows to estimate the affine structure of a scene by solving a linear system of equations. The 3D reconstruction results obtained by using our method, on both real and simulated data, have remarkably validated its feasibility.