scholarly journals “TORINO 1911” PROJECT: A CONTRIBUTION OF A SLAM-BASED SURVEY TO EXTENSIVE 3D HERITAGE MODELING

2018 ◽  
Vol XLII-2 ◽  
pp. 225-234 ◽  
Author(s):  
F. Chiabrando ◽  
C. Della Coletta ◽  
G. Sammartano ◽  
A. Spanò ◽  
A. Spreafico
Keyword(s):  
3D Model ◽  
Handheld Devices ◽  
Complex Environments ◽  
Existing Structures ◽  
Multi Scale ◽  
Rapid Mapping ◽  
Digital Documentation ◽  
Immersive Visualization ◽  
Interactive Navigation ◽  
The University

In the framework of the digital documentation of complex environments the advanced Geomatics researches offers integrated solution and multi-sensor strategies for the 3D accurate reconstruction of stratified structures and articulated volumes in the heritage domain. The use of handheld devices for rapid mapping, both image- and range-based, can help the production of suitable easy-to use and easy-navigable 3D model for documentation projects. These types of reality-based modelling could support, with their tailored integrated geometric and radiometric aspects, valorisation and communication projects including virtual reconstructions, interactive navigation settings, immersive reality for dissemination purposes and evoking past places and atmospheres. The aim of this research is localized within the “Torino 1911” project, led by the University of San Diego (California) in cooperation with the PoliTo. The entire project is conceived for multi-scale reconstruction of the real and no longer existing structures in the whole park space of more than 400,000&amp;thinsp;m<sup>2</sup>, for a virtual and immersive visualization of the Turin 1911 International “Fabulous Exposition” event, settled in the Valentino Park. Particularly, in the presented research, a 3D metric documentation workflow is proposed and validated in order to integrate the potentialities of LiDAR mapping by handheld SLAM-based device, the ZEB REVO Real Time instrument by GeoSLAM (2017 release), instead of TLS consolidated systems. Starting from these kind of models, the crucial aspects of the trajectories performances in the 3D reconstruction and the radiometric content from imaging approaches are considered, specifically by means of compared use of common DSLR cameras and portable sensors.

scholarly journals FROM ARCHIVE DOCUMENTATION TO ONLINE 3D MODEL VISUALIZATION OF NO LONGER EXISTING STRUCTURES: THE TURIN 1911 PROJECT

2020 ◽  
Vol XLIII-B2-2020 ◽  
pp. 837-844
Author(s):  
D. Einaudi ◽  
A. Spreafico ◽  
F. Chiabrando ◽  
C. Della Coletta
Keyword(s):  
Cultural Heritage ◽  
3D Model ◽  
3D Models ◽  
World's Fair ◽  
Existing Structures ◽  
Present Generation ◽  
Technical Issues ◽  
Digital Documentation ◽  
3D Documentation ◽  
Model Visualization

Abstract. Rebuilding the past of cultural heritage through digitization, archiving and visualization by means of digital technology is becoming an emerging issue to ensure the transmission of physical and digital documentation to future generations as evidence of culture, but also to enable present generation to enlarge, facilitate and cross relate data and information in new ways. In this global effort, the digital 3D documentation of no longer existing cultural heritage can be essential for the understanding of past events and nowadays, various digital techniques and tools are developing for multiple purposes.In the present research the entire workflow, starting from archive documentation collection and digitization to the 3D models metrically controlled creation and online sharing, is considered. The technical issues to obtain a detail 3D model are examined stressing limits and potentiality of 3D reconstruction of disappeared heritage and its visualization exploiting three complexes belonging to 1911 Turin World’s Fair.

Articulated 3D model matching using multi-scale histograms of shape features for customized additive manufacturing

2021 ◽  
Vol 132 ◽  
pp. 103520
Author(s):  
Xin Lin ◽  
Kunpeng Zhu ◽  
Min Zhou ◽  
Jerry Ying Hsi Fuh ◽  
Qing-guo Wang
Keyword(s):  
Additive Manufacturing ◽  
3D Model ◽  
Shape Features ◽  
Model Matching ◽  
Multi Scale

scholarly journals A Developmental Work Research (DWR) Study of Team and Organisational Learning at DHL Worldwide Express

1970 ◽  
Author(s):  
Roberta Hill ◽  
Phillip Capper ◽  
Kathryn Hawes ◽  
Ken Wilson
Keyword(s):  
Customer Service ◽  
Complex Environments ◽  
Public Agencies ◽  
Work Activity ◽  
Process Improvements ◽  
Training Systems ◽  
Business Units ◽  
Practical Research ◽  
Developmental Work Research ◽  
The University

The environment in which New Zealand businesses and public agencies operate is volatile, complex and uncertain. Organisations face a wide and competing range of demands. Managers and employees need to collaborate across functions, business units and teams. Practical research approaches are needed to help support them.This paper illustrates how a developmental work research (DWR) approach can support business process improvements and organisational/earning in continuously-changing, complex environments. We present findings from a PGSF study of cross-functional team problem-solving and learning at DHL Worldwide Express in Christchurch between April1997 and June 1998. The study used DWR methods, including analysis of videotaped meetings, developed at the University of Helsinki and the University of California San Diego by Engestrom and his colleagues (1996b).We describe how DWR was used to: analyse a process improvement initiative, or 'problem-trajectory', and how disturbances and tensions within this work activity reveal the underlying contradictions in DHL's operational and training systems; and identify opportunities for comprehensive system innovations that have a marked impact on productivity, efficiency and customer service.

scholarly journals HIGH RESOLUTION 3D ACQUISITION AND MODELLING IN CULTURAL HERITAGE KNOWLEDGE AND RESTORATION PROJECTS: THE SURVEY OF THE FOUNTAIN OF NEPTUNE IN BOLOGNA

2019 ◽  
Vol XLII-2/W11 ◽  
pp. 573-578 ◽  
Author(s):  
V. A. Girelli ◽  
M. A. Tini ◽  
M. Dellapasqua ◽  
G. Bitelli
Keyword(s):  
Information System ◽  
Laser Scanning ◽  
3D Model ◽  
Ad Hoc ◽  
Complex Object ◽  
Visual Computing ◽  
Precision Level ◽  
3D Acquisition ◽  
The University ◽  
User Friendly

<p><strong>Abstract.</strong> In 2016, the Municipality of Bologna (Italy) has undertaken the restoration of one of the symbols of the entire city, the Fountain of Neptune, in evident state of degradation. The works have touched upon all the aspects of this complex object and the project has seen involved the Municipality and the University of Bologna, the Istituto Superiore per la Conservazione e il Restauro (ISCR) (Rome) and the Visual Computing Lab of the CNR – ISTI (Pisa), in a modern and highly multi-disciplinary approach.</p><p>One of the key elements of the project was made up by the creation of an information system ad hoc developed to permit, in an innovative, efficient and user-friendly way, the collection, sharing, management and analysis of all the information and data related to diagnostics and restoration actions. The base of the information system is a very detailed 3D model of the monument, realized by means of the most modern techniques for objects 3D modelling (laser scanning, digital photogrammetry and 3D scanning) integrated together with the aim to obtain a photo-textured 3D model characterized by a sub-millimetre precision level in the geometric description and a high perceptive fidelity of colour reproduction.</p><p>The surveying activities and data processing, performed by the DICAM Geomatics group of the University of Bologna (with the collaboration of the MCM Company of Rome), are described in the paper, with considerations on the problems encountered and the procedures and solutions adopted. The information system has been developed by CNR-ISTI.</p>

scholarly journals Multiscale Object Detection in Infrared Streetscape Images Based on Deep Learning and Instance Level Data Augmentation

2019 ◽  
Vol 9 (3) ◽  
pp. 565 ◽  
Author(s):  
Hao Qu ◽  
Lilian Zhang ◽  
Xuesong Wu ◽  
Xiaofeng He ◽  
Xiaoping Hu ◽  
...  
Keyword(s):  
Object Detection ◽  
Data Augmentation ◽  
Region Of Interest ◽  
Complex Environments ◽  
Feature Maps ◽  
Multi Scale ◽  
Level Data ◽  
Training Stage ◽  
Street Scene ◽  
Layer Region

The development of object detection in infrared images has attracted more attention in recent years. However, there are few studies on multi-scale object detection in infrared street scene images. Additionally, the lack of high-quality infrared datasets hinders research into such algorithms. In order to solve these issues, we firstly make a series of modifications based on Faster Region-Convolutional Neural Network (R-CNN). In this paper, a double-layer region proposal network (RPN) is proposed to predict proposals of different scales on both fine and coarse feature maps. Secondly, a multi-scale pooling module is introduced into the backbone of the network to explore the response of objects on different scales. Furthermore, the inception4 module and the position sensitive region of interest (ROI) align (PSalign) pooling layer are utilized to explore richer features of the objects. Thirdly, this paper proposes instance level data augmentation, which takes into account the imbalance between categories while enlarging dataset. In the training stage, the online hard example mining method is utilized to further improve the robustness of the algorithm in complex environments. The experimental results show that, compared with baseline, our detection method has state-of-the-art performance.

Multi-scale feature matching between 2D image and 3D model

2013 ◽  
Author(s):  
Yong Yi Lee ◽  
Min Ki Park ◽  
Jae Doug Yoo ◽  
Kwan H. Lee
Keyword(s):  
3D Model ◽  
Feature Matching ◽  
Scale Feature ◽  
Multi Scale

scholarly journals RILEM TC "Reinforcement of Timber Elements in Existing Structures"

2013 ◽  
Vol 778 ◽  
pp. 1041-1048 ◽  
Author(s):  
Thomas Tannert ◽  
Jorge M. Branco ◽  
Mariapaola Riggio
Keyword(s):  
Adhesive Layer ◽  
Technical Committee ◽  
Structural Performance ◽  
Rilem Technical Committee ◽  
Reinforced Polymers ◽  
Existing Structures ◽  
University Of Applied Sciences ◽  
Recent Developments ◽  
Strength And Stiffness ◽  
The University

The paper reports on the activities of the RILEM technical committee Reinforcement of Timber Elements in Existing Structures. The main objective of the committee is to coordinate the efforts to improve the reinforcement practice of timber structural elements. Recent developments related to structural reinforcements can be grouped into three categories: (i) addition of new structural systems to support the existing structure; (ii) configuration of a composite system; and (iii) incorporation of elements to increase strength and stiffness. The paper specifically deals with research carried out at the Bern University of Applied Sciences Switzerland (BFH), the University of Minho Portugal (UniMinho), and the University of Trento Italy (UNITN). Research at BFH was devoted to improve the structural performance of rounded dovetail joints by means of different reinforcement methods: i) self-tapping screws, ii) adhesive layer, and iii) a combination of self-tapping screws and adhesive layer. Research at UNITN targeted the use of dry connections for timber-to-timber composites, specifically reversible reinforcement techniques aimed at increasing the load-bearing capacity and the bending stiffness of existing timber floors. At UniMinho, double span continuous glulam slabs were strengthened with fibre-reinforced-polymers. All three examples demonstrate the improved structural performance of timber elements after reinforcing them.

scholarly journals A N-D VIRTUAL NOTEBOOK ABOUT THE BASILICA OF S. AMBROGIO IN MILAN: INFORMATION MODELING FOR THE COMMUNICATION OF HISTORICAL PHASES SUBTRACTION PROCESS

2017 ◽  
Vol XLII-2/W5 ◽  
pp. 653-660 ◽  
Author(s):  
C. Stanga ◽  
C. Spinelli ◽  
R. Brumana ◽  
D. Oreni ◽  
R. Valente ◽  
...  
Keyword(s):  
Survey Data ◽  
3D Model ◽  
Mobile App ◽  
Information Modeling ◽  
Historical Research ◽  
History Of ◽  
History Of Architecture ◽  
Digital Documentation ◽  
The City

This essay describes the combination of 3D solutions and software techniques with traditional studies and researches in order to achieve an integrated digital documentation between performed surveys, collected data, and historical research. The approach of this study is based on the comparison of survey data with historical research, and interpretations deduced from a data cross-check between the two mentioned sources. The case study is the Basilica of S. Ambrogio in Milan, one of the greatest monuments in the city, a pillar of the Christianity and of the History of Architecture. It is characterized by a complex stratification of phases of restoration and transformation. Rediscovering the great richness of the traditional architectural notebook, which collected surveys and data, this research aims to realize a virtual notebook, based on a 3D model that supports the dissemination of the collected information. It can potentially be understandable and accessible by anyone through the development of a mobile app. The 3D model was used to explore the different historical phases, starting from the recent layers to the oldest ones, through a virtual subtraction process, following the methods of Archaeology of Architecture. Its components can be imported into parametric software and recognized both in their morphological and typological aspects. It is based on the concept of LoD and ReverseLoD in order to fit the accuracy required by each step of the research.

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