0000000001039228
AUTHOR
L Inzerillo
Reconstructing urban scene 3D using VisualSfM
New computer vision techniques use photo dataset to rapidly build detailed 3D models. Computer- vision researchers have explored many approaches to city-scale 3D reconstruc on. Among these systems stands out VisualSfM developed by the University of Washington & Google Inc. It is a open source GUI applica on of a Structure from Mo on (SfM) so! ware that uses a feature extractor called Si! GPU and the Mul core Bundle Adjustment. In addi on it embeds the CMVS/ PMVS2 able to reconstruct dense 3D point cloud. Our goal is to demonstrate the metric accuracy of VisualSfM+CMVS/PMVS2 and that to get run it, you can use an unstructured photo dataset but the result improves if you use a structured phot…
Il Portico meridionale della Cattedrale di Palermo: sperimentazioni di rilievo attraverso l’utilizzo di tecniche Structure from Motion
Structure from Motion (SfM) techniques constitute a very fertile field of investigation within the research of the surveying sector and that of the representation of architecture. They allow us to reach higher levels of reliability and accuracy, both metric and graphical, extremely quickly and with lower costs than other methods, including the laser scanner. In this study, we report the results of some experiments carried out on the southern Portico entrance of the Cathedral of Palermo through the use of the SfM techniques later validated by comparison with the point cloud obtained from laser scanning.
Prospettiva solida: il caso della Cattedrale di Palermo
Il panorama culturale architettonico ed artistico del capoluogo siciliano, è così ricco sia in termini di qualità che di varietà, da offrire sempre nuovi spunti di ricerca, interpretazione, elaborazione e rivisitazione. In particolar modo, per quanto concerne gli elementi scultorei e pittorici in cui sono presenti esempi di prospettiva solida, come teatrini, formelle, volte con finte prospettive, quadraturismo, tromp-oeil, ed altro ancora, vi è, sul territorio, una tale quantità e varietà di applicazioni che il loro studio meriterebbe un’attenzione a parte. In seno a questa ricerca su scala Nazionale, considerate le non adeguate forze lavoro a disposizione, è in corso la catalogazione degli…
Smart Monitoring of Civil Infrastructures
In this presentation, I will show a case study of smart monitoring applied on pavement road to detect the distresses and verify the real state of life of the infrastructures. The methodology used is based on the photogrammetric technique that allow us to carry out a 3D model that has the follow features: low cost process, low time process, user friendly, repeatability. These features consent to make a planning with frequently acquisition to guarantee a reliability monitoring. It works with the comparison between the dense clouds of the 3D models acquired in different moment: the mean square distance between the dense clouds shows where there has been a new distress or an increasing of an ol…
Architectural Perspectives in the Cathedral of Palermo: Image-Based Modelling for Cultural Heritage Understanding and Enhancement
Palermo off ers a repertoire of both artistic and architectural solid perspective of great beauty and in large quantity. This paper addresses the problem of the 3D survey of these works and their related study through the use of image-based modelling (IBM) techniques. We propose, as case studies, the use of IBM techniques inside the Cathedral of Palermo. Indeed, the church houses a huge and rich sculptural repertoire, dating back to 16th century, which constitutes a valid field of IBM techniques application. The aim of this study is to demonstrate the e ffectiveness and potentiality of these techniques for geometric analysis of sculptured works. Indeed, usually the survey of these artworks …