Search results for "restoration"
showing 10 items of 584 documents
Per il sistema difensivo di Rodi "insigne monumento cioè di tutta la città murata"
2016
Tra la seconda metà del XIX sec. e l’inizio del XX sec. in Europa si assiste alla progressiva distruzione dei sistemi difensivi delle città, in quanto, oramai, considerati inutili ingombri rispetto ai motivi che li avevano originati. Delle fortificazioni delle città, solamente alcuni elementi furono conservati, come, ad esempio le porte urbiche e alcune torri. In particolare la città di Rodi, in Grecia, fino all’arrivo degli occupanti italiani, nel 1912, possedeva un sistema di fortificazioni formato da mura, bastioni, fossati e terrapieni. Quest’ultimi, dopo più di duecento anni, dalla conquista dello stato dei Cavalieri di Rodi, erano stati adibiti a cimiteri israeliani e musulmani. Con l…
Architettura barocca nella Sicilia orientale e progettazione del restauro: la conservazione della facciata della Chiesa di Santa Maria delle Stelle a…
2010
La tavola mostra alcuni elaborati estratti dal progetto di restauro della chiesa di Santa Maria delle Stelle a Comiso (RG), uno degli esempi più rappresentativi d'architettura barocca nella Sicilia orientale.
Progetto di restauro, per la fruizione e la valorizzazione della chiesa di Sant’Antonio Abate
2021
Il saggio presenta l’iter metodologico utilizzato per l’analisi dello stato di conservazione e delle problematiche di accessibilità presenti nella chiesa parrocchiale di Sant’Antonio Abate di Palermo, già esistente all’inizio del sec. XIII. Inoltre nel saggio si mostra una proposta di restauro e di accessibilità alla stessa chiesa. Oggi esiste un elevato dislivello (creato con l’apertura della via Roma) tra il piano della via Roma e l’accesso alla chiesa. La ricerca è stata condotta all’interno del Laboratorio di restauro e Teoria e storia del restauro e ha visto protagonisti le allievi e gli allievi del corso LM4 in Architettura del Dipartimento di Palermo. La soluzione suggerita è stata q…
Il progetto I-Access: implementare l'accessibilità nell'uso e nella conoscenza dei centri storici urbani
2021
This paper describes the INTERREG Italy-Malta 1/16 project, of which the Department of Architecture was the beneficiary. The proposal, in the disciplinary field of restoration, aims to create action-learning to be applied in the historic quarters of Palermo and Valletta by implementing an integrated, totally, interdisciplinary working method; it embraces the degree of physical accessibility (with the design of architectural interventions and the provision of technological-IT assistance tools for a smoother passage), and a cultural one, which is expressed via the 'networking' of virtual communication for areas that cannot be easily reached and in parallel educational action that works on ove…
Restoration of Vertical Line Scratches with a Distributed Genetic Algorithm
2006
This contribution approaches the problem of scratch restoration in old movies as a optimisation's problem. The functional based on the statistical properties of the image around the scratch is optimised using an ad-hoc genetic algorithm. Given the large amount of the computational time needed by genetic algorithms, a network of standard workstations with heterogeneous operating systems has been used. Each workstation in the network works on each scratch to perform the restoration, and a specific machine works as root node with the task of distributing jobs on the network and adding the outputted restored scratches back into the image.
The restoration of the North-East corner columns of Santa Maria La Nova the cloister in Monreale, Italy
2022
Lo scopo della presente ricerca è quello di descrivere i risultati dello studio, con la rappresentazione tramite scanner laser 3D, e del restauro scientifico, che ha previsto anche una reintegrazione, del gruppo di colonne posto nell'angolo Nord-Est del famoso chiostro dell'Abbazia di Santa Maria La Nova in Monreale, vicino Palermo, Italia (ultimo quarto del XII secolo) The purpose of the present research is to describe the results of the study, with 3D laser scanner representation, and scientific restoration, which also included reintegration, of the group of columns located in the northeast corner of the famous cloister of the Abbey of Santa Maria La Nova in Monreale, near Palermo, Italy …
A Gabor-based Technique for Bias Removal in MR images
2007
Magnetic Resonance images are often characterized by irregularly displaced luminance fluctuations that are called bias artifact. This disturb is due to a drop in signal intensity caused by the distance between imaged sample and receiver coil. An original approach to bias removal in Magnetic Resonance images is presented, which is based on the use of Gabor filter to extract the artifact. The proposed technique restores the image using a correction model, which is derived from the attenuation of signal diffusion across the tissues. No hypotheses are made about the structure of the tissues under investigation and the used MR spectrum. The approach is presented in detail, and extensive experime…
Homomorphic Approach to RF-Inhomogeneity Removal Based on Gabor Filter
2007
In this paper a bias correction algorithm for magnetic resonance imaging (MRI) is presented. The magnetic resonance (MR) images affected by this artifact, also called RF-inhomogeneity, exhibit irregular spatial brightness variations caused by magnetic field inhomogeneity. Here we present an original algorithm based on E2D - HUM, already proposed by some of the authors, where a modified Gabor filter is introduced in the elaboration chain to provide directional capabilities to suppress the artifact. The process of restoration doesn't care about the structure of the image and it has been applied to MR images of different parts of body like knee, abdomen, pelvis and brain. A comparison with oth…
Multidirectional Scratch Detection and Restoration in Digitized Old Images
2010
Line scratches are common defects in old archived videos, but similar imperfections may occur in printed images, in most cases by reason of improper handling or inaccurate preservation of the support. Once an image is digitized, its defects become part of that image. Many state-of-the-art papers deal with long, thin, vertical lines in old movie frames, by exploiting both spatial and temporal information. In this paper we aim to face with a more challenging and general problem: the analysis of line scratches in still images, regardless of their orientation, color, and shape. We present a detection/restoration method to process this defect.
A knowledge based architecture for the virtual restoration of ancient photos
2017
Abstract Historical images are essential documents of the recent past. Nevertheless, time and bad preservation corrupt their physical supports. Digitization can be the solution to extend their “lives”, and digital techniques can be used to recover lost information. This task is often difficult and time-consuming, if commercial restoration tools are used for the purpose. A new solution is proposed to help non-expert users in restoring their damaged photos. First, we defined a dual taxonomy for the defects in printed and digitized photos. We represented our restoration domain with an ontology and we created some rules to suggest actions to perform in case of some specific events. Classes and …