The Integrated Feature-based Modeller - The Completion Step

The Integrated Feature-Based Modeller is the kernel of the Integrated Feature-Based Prototype System, developed within a European cooperation between Fraunhofer-IGD, Darmstadt and IMATI, C.N.R., Genova. It includes the recognition and the completion steps. The feature recogniser performs a reasoning process in order to identify and classify characteristic regions (form features). The completion step aims at determining the volumetric representations of the space occupied by the features of an object. The objective is to evaluate the volumes that can be associated to specific operations executed in an application context, such as design, assembling or machining. This document describes the upgraded completion process within the Intermediate Modeller module. Moreover, for what concerns the recognition and the completion steps, the usage, the results, and the choices that can be done thanks to the textual interface provided with the application are also explained

Engineering geological map of the Chiavari city area (Liguria, Italy)

An engineering geological map at a scale of 1:10,000 of the Chiavari city area (Northern Italy) – a major tourist and economic attraction of the Ligurian East Riviera – is presented in this paper. The municipality land shows an excellent geomorphological case-study of the well-known Ligurian coast: a floodplain, fairly wide and inhabited, formed by several floods of the two main rivers, a hill hinterland, reasonably inhabited, developed in marly limestones and sandy shales flysch and the coast – featuring cliffs and narrow pebbly beaches – deeply modified. This map was compiled by combining available geological data with a new engineering geomorphological field survey and including geotechnical data which were obtained from studies carried out for town planning and building purposes. On the basis of the critical review of the available lithostratigraphic data from drilling, as well as geotechnical and geophysical analyses carried out between 1981 and 2010 on the municipality land, an engineering geologica..

Large-scale geomorphology of the Entella River floodplain (Italy) for coastal urban areas management

This research presents a geomorphological map of the Entella River floodplain (scale 1:10,000), one of the largest and urbanized Ligurian Tyrrhenian flat area. The coastal floodplain suffered substantial modifications due to human activities since the latter half of the nineteenth century, which transformed the natural landscape into an anthropogenic environment. Fluvial, marine and anthropogenic geomorphological features have been investigated through a multi-temporal analysis and the reviewing, re-elaboration and summarization of previous geographical and geomorphological materials. An historical analysis has been performed to reconstruct morphological modifications and their correlation with anthropogenic interventions. The main geomorphological map includes a multi-temporal analysis of shoreline and major anthropogenic landforms. Small sketch maps on the geographical, geological and land use settings are also provided. The detailed geomorphological map can be used for urban and land planning, including the mitigation of the meteo- and geo-hydrological risk, which historically has dramatically influenced the Entella coastal floodplain

A common ontology for multi-dimensional shapes

In recent years, digital shapes have become more and more widespread and have been made available in a plethora of online repositories. A systematic and formal approach for capturing and representing shape-related information is needed to facilitate its reuse and enable the demonstration of useful cross-domain usage scenarios. In this paper we present an ontology for digital shapes, called the Common Shape Ontology (CSO). We discuss the rationale, the requirements and the scope of this ontology, we present in detail its structure and describe the most relevant choices related to its development. Finally, we show how the CSO conceptualization is used in domain-specific application scenarios

Multi-Segmentation and Annotation of 3D Surface Meshes

The ShapeAnnotator is a graphical tool designed to assist an expert user in the task of annotating a surface mesh with concepts belonging to a domain of expertise. The user is first required to identify meaningful surface features; Each such feature can then be "labeled" with a concept, and the surface mesh, along with the features identified and their labels, can be saved

Part-based Annotation of Virtual 3D Shapes Abstract

In the latest years, distributed virtual worlds populated by static and dynamic 3D shapes have grown significantly, and the need to model and process them effectively has become a critical issue. The introduction of semantic annotations for capturing characteristics and behaviours is foreseen as a fundamental contribution to move from traditional geometric shapes towards self-describing semantic shapes. To this aim, we describe the foundations of a novel system that allows us to perform non-trivial segmentations of 3D surface meshes and to annotate the detected parts through concepts expressed by an ontology. Each part is connected to an instance in a knowledge base, allowing easier retrieval in a semantics-based context. We show how the part-based annotation framework might be used in two scenarios, namely for the creation of avatars in emerging Internet-based virtual worlds and for product design in emanufacturing.

Engineering Geological and Hydrogeological Characterization of Acero Landslide (Upper Sturla Valley, Northern Apennine)

This work describes the results of the geotechnical and hydrogeological characterization of a very slow landslide involving Acero, a village in the Northern Apennine. Through boreholes and geophysical surveys, it was possible to obtain a geological profile of the landslide, while through some monitoring activities we were able to obtain information about displacements and water table. Laboratory tests completed the definition of the geotechnical and mineralogical properties of the soil. The landslide shows maximum speed values of 1.5 cm/y, with maximum accelerations during heavy rain periods. This landslide has been classified as a residual state type and can be considered as dormant or active, depending on vertical effective stress and pore pressure variations. The hydrogeological risk mitigation is carried out through the interpretation of the landslide trigger and evolution mechanisms such as the reduction of the water table level

Contenuti 2D e 3D relativi alla Tavola di Polcevera

Il presente rapporto tecnico descrive l’attività svolta per il Comune di Genova Settore Biblioteche in collaborazione con il Museo di Archeologia Ligure di Pegli, (Contratto IMATI- Comune di Genova Settore Biblioteche rif. IMATI prot. n° 0001490 del 2/09/2011) che ha riguardato la produzione di contenuti 2D e 3D e software relativi alla “La Tavola del Polcevera”, un reperto di oltre 2000 anni fa di enorme interesse storico per quanto riguarda la Liguria ed in particolare Genova. Obiettivo dell’attività era quello di rendere tale reperto fruibile sia agli specialisti del settore sia al grande pubblico in una forma più moderna e completa di quanto non fosse stato fino ad ora possibile. L’attività svolta ha compreso due work package principali. Il primo (WP1) si è occupato del trattamento dei dati 3D e in particolare delle conversioni di formato e della produzione di modelli semplificati, mentre il secondo (WP2) si è occupato dei contenuti 2D e dell’integrazione dei dati prodotti in un applicativo che li rende fruibili in una forma più completa ed interattiva