Search results for "restoration"

Filling-in Gaps in Textured Images Using Bit-Plane Statistics

2008

In this paper we propose a novel approach for the texture analysis-synthesis problem, with the purpose to restore missing zones in greyscale images. Bit-plane decomposition is used, and a dictionary is build with bit-blocks statistics for each plane. Gaps are reconstructed with a conditional stochastic process, to propagate texture global features into the damaged area, using information stored in the dictionary. Our restoration method is simple, easy and fast, with very good results for a large set of textured images. Results are compared with a state-of-the-art restoration algorithm.

Content-Based Image Retrieval as Validation for Defect Detection in Old Photos

2009

Restoration of Digitized Damaged Photos using Bit-Plane Slicing

2007

Digital image restoration aims to recover damaged zones of a digital image, using surrounding information. In this paper we propose a novel approach, based on bit-plane slicing decomposition, with the purpose to make information analysis and reconstruction process easy, fast and effective. Tests have been made on digitized damaged old photos to restore several classes of typical defects in old photographic prints.

Texture Synthesis for Digital Restoration in the Bit-Plane Representation

2007

In this paper we propose a new approach to handle the problem of restoration of grayscale textured images. The purpose is to recovery missing data of a damaged area. The key point is to decompose an image in its bit-planes, and to process bits rather than pixels. We propose two texture synthesis methods for restoration. The first one is a random generation process, based on the conditional probability of bits in the bit-planes. It is designed for images with stochastic textures. The second one is a best-matching method, running on each bit-plane, that is well suited to synthesize periodic patterns. Results are compared with a state-of-the-art restoration algorithm.

Restoration of out of focus images based on circle of confusion estimates

2002

In this paper a new method for a fast out-of-focus blur estimation and restoration is proposed. It is suitable for CFA (Color Filter Array) images acquired by typical CCD/CMOS sensor. The method is based on the analysis of a single image and consists of two steps: 1) out-of-focus blur estimation via Bayer pattern analysis; 2) image restoration. Blur estimation is based on a block-wise edge detection technique. This edge detection is carried out on the green pixels of the CFA sensor image also called Bayer pattern. Once the blur level has been estimated the image is restored through the application of a new inverse filtering technique. This algorithm gives sharp images reducing ringing and c…

Il restauro virtuale delle superfici pittoriche della Tomba dell'Atleta di Ugento

2021

The contribution concerns the virtual reconstruction of the paintings of the Athlete's tomb in Ugento

Pittura antica e restauro virtuale

2020

This contribution presents the preliminary work, carried out over the past few months, concerning the reconstructive study of the paintings and mosaics of the Centennial House ", Insula IX-8, in Pompeii. In particular, the work focused on the decorated surfaces of 11 rooms located along the western part of the house, between the large central peristyle and the centenary alley. The different state of conservation of the paintings and mosaics made it necessary to use two different methods of digital intervention: the "virtual restoration" and the "virtual reconstruction". Both aim to reconstruct the initial condition of the appearance of the paintings at the time of their creation and use the…

Archeologia Virtuale a Hierapolis di Frigia: la restituzione dell’immagine della città

2018

Inside the Italian Archaeological Mission in Hierapolis of Phrygia activities it has been developed an ambitious plan to return the image of the Hellenistic-Roman and Byzantine city called ‘Virtual Hierapolis’, aimed at the restoration and virtual three-dimensional reconstruction of the monumental complex object investigation by the various research teams. The project, coordinated by Francesco D’Andria, is led by the writer in the Laboratory of Applied Archaeology, University of Salento and benefits from the collaboration of archaeologists, architects and restorers operating in each of the Mission’s research units, belonging the IBAM-CNR himself and a number of universities, both Italian an…

Archeologia e Restauro Virtuale nell’Università del Salento tra passato, presente e futuro

2019

Virtual archeology, expression of Virtual Cultural Heritage5, has seen the definition of its guidelines already in the early nineties; and indicates a research field that deals with the reconstruction of past landscapes through three-dimensional models and multimedia solutions. It allows you to collect, catalog and make available to all the information acquired by work of archaeologists transforming them into digital knowledge and spreading them to an increasing number of people according to different levels of knowledge

Hierapolis di Frigia XIII - Virtual Hierapolis. Virtual Archaeology and Restoration Project (2007-2015)

2019

This new volume in the series dedicated to Hierapolis presents the results of an ambitious project concerning the 3D reconstructions of its main monuments and the virtual restoration of the artefacts and pictorial and mosaic decorations, present above all in the houses of the city’s aristocracy. Some of these items have already been described in previous publications, but in this volume, together with hitherto unseen images, they are part of the Virtual Tour of the city, which can also be experienced via on-line and off-line platforms, choosing from three different visitor itineraries. As well as the specific need to study the ancient architecture by means of 3D virtual reconstructions, the…