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29th International conference on the digital Transformation in the Graphic Engineering, INGEGRAF 2019

ISBN: (纸本)9783030411992

The proceedings contain 66 papers. The special focus in this conference is on digital Transformation in the Graphic Engineering. The topics include: Conceptual design of Foldable and Stackable Furniture for Preschool Classrooms;the Inclined Plane Rosary Pump of Benito Bails’ ‘Elements of Mathematics’ (1790): Geometric Modeling and virtual reconstruction;The Model Based definition Features - MBd Applied to the Technical Computer Aid design and drawing;geometrical Study of the Barrel as an Element of the Wine-Making Productive Process. Parameterization and Modelling;walking Mechanisms: Study and design for Use in Sandy Environments;A Proposed Methodology for Calculating the Rigid Body Natural Frequencies of EPdM Rubber Fixed Supports with the Finite Element Method (FEM);The Importance of 3d Scanned Mesh Processing in FEM Simulation Results;inspection of 3d Printing and Advanced Manufacturing Processes Using Hybrid 3d Metrological Technologies;conformal Cooling Systems design and dimensioning for Injection Molds;custom Elasticity Materials Through Mixing Thermoplastics with Extrusion 3d Printers;Improvement in the design of a Front Hub for the BMX Bicycle;wheelchair Mobility Aid Through the Adaptation of Electric Scooters;a Custom-Made Photogrammetry Scanner to Support Paediatric Surgery;best-Fit Alignment in the digital dental Workflow;digitization of the Mechanical Articulator: virtual Articulator;Medical Play Therapy: development of the JUNIOR-MRI Role Play;infrared Thermography as a visualization Technique for Light Muscle Pathologies;development of a Methodology of 3d Modeling of Heads for Their Application in the design of Customized Sports Helmets;3d-Printed Canine Tibia Model from Clinical Computed Tomography data;About BIM in Civil Engineering.

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Body Size and depth disambiguation in Multi-Person reconstruction from Single Images

Body Size and Depth Disambiguation in Multi-Person Reconstru...

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International conference on 3d Imaging, Modeling, Processing, visualization and Transmission (3dIMPVT)

作者： Nicolas Ugrinovic Adria Ruiz Antonio Agudo Alberto Sanfeliu Francesc Moreno-Noguer Institut de Robòtica i Informàtica Industrial CSIC-UPC Barcelona Spain

ISBN: (纸本)9781665426893

We address the problem of multi-person 3d body pose and shape estimation from a single image. While this problem can be addressed by applying single-person approaches multiple times for the same scene, recent works have shown the advantages of building upon deep architectures that simultaneously reason about all people in the scene in a holistic manner by enforcing, e.g., depth order constraints or minimizing interpenetration among reconstructed bodies. However, existing approaches are still unable to capture the size variability of people caused by the inherent body scale and depth ambiguity. In this work, we tackle this challenge by devising a novel optimization scheme that learns the appropriate body scale and relative camera pose, by enforcing the feet of all people to remain on the ground floor. A thorough evaluation on MuPoTS- 3d and 3dPW datasets demonstrates that our approach is able to robustly estimate the body translation and shape of multiple people while retrieving their spatial arrangement, consistently improving current state-of-the-art, especially in scenes with people of very different heights. Code can be found at: https://***/nicolasugrinovic/size_depth_disambiguation

关键词： Measurement Solid modeling Image segmentation Three-dimensional displays Shape Semantics Pose estimation

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PHOTOGRAMMETRIC SURVEY WITH FISHEYE LENS FOR THE CHARACTERIZATION OF THE LA SASSA CAVE 8

PHOTOGRAMMETRIC SURVEY WITH FISHEYE LENS FOR THE CHARACTERIZ...

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8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Alessandri, L. Baiocchi, V. del Pizzo, S. Rolfo, M. F. Troisi, S. Univ Groningen GIA Poststr 6 NL-9712 ER Groningen Netherlands Sapienza Univ Rome DICEA Via Eudossiana 18 I-00184 Rome Italy Parthenope Univ Naples Ctr Direz Isola C4 Naples Italy Univ Tor Vergata Dept Hist Culture & Soc Via Columbia 1 I-00133 Rome Italy

The survey of ancient cave can generally be performed by traditional topographic methods that allow also its georeferencing in a global reference frame;some difficulties may arise when there are narrow tunnels that do not consent the use of a total station or a terrestrial laser scanner. In such cases a visual-based approach can be used to produce, both the followed path and the 3d model of the hypogeal environment. A prompt photogrammetric survey has been used to reconstruct the morphology of the La Sassa Cave, situated in the municipality of Sonnino (Latina), in the lower Lazio region. In this cave, a very large quantity of Pleistocene animal bones was found, together with several fragments of Copper Age human bones and Bronze Age impasto potsherds. The survey was carried out using a dSLR full frame camera Nikon d800E with a Nikkor 16 mm fisheye lens pre-calibrated. during the acquisition, several targets were measured in order to contain the deformations model. The photogrammetric model has been georeferenced using 3 GCPs positioned outside the cave entrance where a double frequency GNSS receiver has acquired data in static session mode.

关键词： Photogrammetry Structure from Motion Cultural Heritage 3d modeling Georeferencing Bronze Age Pleistocene

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3d STRUCTURE ANALYSIS: ARCHITECTURE AS AN EXPRESSION OF THE TIES BETWEEN GEOMETRY ANd PHILOSOPHY 8

3D STRUCTURE ANALYSIS: ARCHITECTURE AS AN EXPRESSION OF THE ...

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8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Bellone, Tamara Mussio, Luigi Porporato, Chiara Politecn Turino DIATI Turin Italy Politecn Milan DICA Milan Italy

In recent decades many Geomatics-based methods have been created to reconstruct and visualize objects, and these include digital photogrammetry, Lidar, remote sensing and hybrid techniques. The methods used to process such data are the result of research straddling the fields of Geomatics and Computer Vision, and employ techniques arising from approaches of analytical, geometric and statistical nature. One of the most fascinating fields of application concerns Architecture, which, moreover, has always depended on Mathematics generally and, more specifically, on Geometry. Throughout history the link between Geometry and Architecture has been strong and while architects have used mathematics to construct their buildings, geometry has always been the essential tool allowing them to choose spatial shapes which are aesthetically appropriate. Historically, mathematics and philosophy have been interrelated;many philosophers of the past were also mathematicians. The link between Philosophy and Architecture is twofold: on the one hand, philosophers have discussed what architecture is, on the other, philosophy has contributed to the development of architecture. We will deal with the ties between Architecture, Geometry and Philosophy over the centuries. Although there are artistic suggestions that go beyond time and space, and there are genial precursors, we can identify, in principle, some epochs: the ancient era, the modern era, and fmally the contemporary epoch, from the crisis of positivistic sciences to globalisation.

关键词： Euclidean Geometry Projective Geometry Non Euclidean Geometries Mathematics and Philosophy Mathematics and Architecture Philosophy of Architecture

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3d immersive visualization of micro-computed tomography and XRd texture datasets

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POWdER dIFFRACTION 2019年第2期34卷 97-102页

作者： Rodriguez, M. A. Amon, T. T. Griego, J. J. M. Brown-Shaklee, H. Green, N. Sandia Natl Labs POB 5800 Albuquerque NM 87185 USA Dept Energys Kansas City Natl Secur Campus Honeyw Kansas City MO 64147 USA

Advancements in computer technology have enabled three-dimensional (3d) reconstruction, data-stitching, and manipulation of 3d data obtained on X-ray imaging systems such as micro-computed tomography (mu-CT). Likewise, intuitive evaluation of these 3d datasets can be enhanced by recent advances in virtual reality (VR) hardware and software. Additionally, the generation, viewing, and manipulation of 3d X-ray diffraction datasets, such as pole figures employed for texture analysis, can also benefit from these advanced visualization techniques. We present newly-developed protocols for porting 3d data (as TIFF-stacks) into a Unity gaming software platform so that data may be toured, manipulated, and evaluated within a more-intuitive VR environment through the use of game-like controls and 3d headsets. We demonstrate this capability by rendering mu-CT data of a polymer dogbone test bar at various stages of in situ mechanical strain. An additional experiment is presented showing 3d XRd data collected on an aluminum test block with vias. These 3d XRd data for texture analysis (chi, phi, 2 theta dimensions) enables the viewer to visually inspect 3d pole figures and detect the presence or absence of in-plane residual macrostrain. These two examples serve to illustrate the benefits of this new methodology for multidimensional analysis.

关键词： 3d immersive visualization micro-computed tomography XRd texture datasets

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design and implementation of substation operation safety monitoring and management system based on three dimensional reconstruction

Design and implementation of substation operation safety mon...

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2020 International conference on Machine Learning and Intelligent Systems, MLIS 2020

作者： Yang, Yingyi Wu, Hao Yang, Fan Mai, Xiaoming Chen, Hui Guangdong Diankeyuan Energy Technology Co. Ltd. Electric Power Research Institute of Guangdong Power Grid Co. Ltd. Shaoguan Power Supply Bureau of Guangdong Power Grid Co. Ltd.

ISBN: (纸本)9781643681368

In order to reduce operational risks and to improve the risk management and control level in substation, a substation operation safety monitoring and management system (3d2S2M) has been structured based on three-dimensional (3d) laser modeling technology. In this paper, we introduce how to build such a system and to describe its implementation details. A 3d lidar scanning technology is used to perform a holographic scan of the whole internal area in a substation to obtain color point cloud data of buildings and all equipment. Then, a novel 3d visualization safety monitoring and management system, named 3d2S2M, is developed by performing a 3d reconstruction of the point cloud data. Based on the real 3d scene model of 3d2S2M, the method of 3d distance measurement is used to replace manual on-site investigation for improving operation and maintenance efficiency. In addition, a real-time high-accuracy localization method is proposed, in order to identify and analyze the positioning and the behavior of the personnel, and the movement trajectory of the equipment. By combining positioning information and the electronic fence that used in 3d2S2M, risk levels of the personnel (or equipment) are evaluated and the corresponding alarm is issued to prevent dangerous behavior, thereby the operation risk is reduced in substation. © 2020 The authors and IOS Press.

关键词： Risk management

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The Application of BIM in the "China Beautiful Rural" design Project-Yangyou Village River Ecological Landscape reconstruction design Project

The Application of BIM in the "China Beautiful Rural" Design...

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10th International conference on Applied Human Factors and Ergonomics (AHFE) / AHFE International conference on Human Factors in Architecture, Sustainable Urban Planning and Infrastructure

作者： Wei, Xia Bonenberg, Wojciech Zhou, Mo Poznan Univ Tech Fac Architecture Nieszawska 13C PL-60021 Poznan Poland

ISBN: (纸本)9783030201517;9783030201500

As the urbanization process continues to deepen, the scale of construction projects is getting larger, and the different involved fields are more complicated. The construction industry is also facing a severe test while it is developing rapidly. As the most sought-after application technology in the area of engineering construction, BIM is receiving more and more attention and practice. Today, the application of BIM technology in architecture has matured, but the application in landscape design is still in the exploration stage. BIM technology mainly emphasizes the complete life cycle of planning, design, construction, completion operation, and demolition and update, the construction information of each stage is built into 3d virtual through the structure of 3d information model. Utilize BIM's information model to enable data to be shared and serve as a platform for collaboration among professional consultants to effectively control engineering costs, schedule engineering, reduce cost of waste due to design or construction errors, and improve construction quality. The construction information can be extended to the property management stage after completion. BIM can effectively solve the traditional engineering interface complex and harmonized 2d diagram which is difficult to clearly state the 3d space, the information of each stage of the construction life cycle is difficult to transmit and other shortcomings effectively. This paper will try to analyze the application prospect of BIM technology in landscape design from several aspects. Through the case study of "Yangyou Village River Ecological Landscape reconstruction design Project," BIM has significantly provided the benefits for more scientific design and application.

关键词： BIM Landscape architecture China beautiful rural project

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INTEGRATION OF SURVEYING TECHNIQUES TO dETECT THE IdEAL SHAPE OF A dOME: THE CASE OF THE ESCUELAS PIAS CHURCH IN VALENCIA 8

INTEGRATION OF SURVEYING TECHNIQUES TO DETECT THE IDEAL SHAP...

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8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Artese, Serena Lerma, Jose Luis Molla, Juan Aznar Sanchez, Rafael Marin Zinno, Raffaele Univ Calabria Dept Civil Engn Cubo 45-BVia Pietro Bucci I-87036 Arcavacata Di Rende CS Italy Univ Politecn Valencia Photogrammetry & Laser Scanner Res Grp GIFLE Dept Cartog Engn Geodesy & Photogrammetry C VeraS-NBldg 7i E-46022 Valencia Spain Univ Politecn Valencia Dept Architectural Construct C VeraS-NBldg 1b E-46022 Valencia Spain Univ Calabria Dept Informat Modeling Elect & Syst Engn Via P Bucci Cubo 42C I-87036 Arcavacata Di Rende Italy

The three-dimensional (3d) documentation and surveying of cultural heritage can be carried out following several geomatics techniques such as laser scanning and thermography in order to detect the original 3d shape after applying reverse engineering solutions. In almost all cases, the integration of data collected by different instruments is needed to achieve a successful and comprehensive 3d model of the as-built architectural shape of the historical building. This paper describes the operations carried out by the authors to determine the as-built 3d model of the Escuelas Pias Church, related namely to the dome and circular nave. After the description of the church and historical notes, attention will be driven to the indirect registration results obtained with three different laser scanning software packages, highlighting similarities and differences, and the consequences while generating meshes. The 3d model carried out will then be described and the results of some investigations with regard to the hypotheses about the design of the dome and the origin of the alterations will be presented.

关键词： Laser scanner Cultural heritage Thermal camera 3d modelling

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SURVEY ANd virtual reconstruction OF ANCIENT ROMAN FLOORS IN AN ARCHAEOLOGICAL CONTEXT 2

SURVEY AND VIRTUAL RECONSTRUCTION OF ANCIENT ROMAN FLOORS IN...

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2nd International conference of Geomatics and Restoration (GEORES)

作者： Fazio, L. Lo Brutto, M. dardanelli, G. Univ Palermo Dept Cultures & Soc Palermo Italy Univ Palermo Dept Engn Palermo Italy

despite the consistent development of approaches aimed at the virtual reconstruction of whole houses or archaeological monuments, the variety of technologies involved in virtual reconstruction procedures and the complexity of a rigorous process to provide validation models, seems to limit a univocal and shared standards adoption. For example, compared to the large number of contributions on the virtual reconstruction of whole architectures or cultural heritage sites, only a few works have proposed a rigorous workflow specific to mosaics and ancient floors and to their virtual reconstruction. The goal of this work is to present the first results on the virtual reconstruction of the "Temple of Isis" in Marsala (Italy);in particular, the work is aimed at the virtual reconstruction of the mosaic and the opus spicatum floor still preserved in situ. A close-range photogrammetric survey was carried out in order to provide a detailed floors 3d reconstruction;a structure-from-motion photogrammetry approach was employed to obtain a detailed 2d and 3d documentation with millimetric accuracy and high level of colour fidelity. Thanks to the photogrammetric products, accurate virtual restoration/reconstruction of the whole floor surfaces was conducted in a rigorous way and as close as possible to the historical reality.

关键词： virtual reconstruction Archaeology 3d Model Close-range Photogrammetry Structure-from-Motion

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EVALUATING THE STRUCTURAL INTEGRITY OF THE SAINT ANTONIO BARREL VAULT IN THE FORTRESS OF ALMEIdA BY COMBINING LASER SCANNER ANd LIMIT ANALYSIS 8

EVALUATING THE STRUCTURAL INTEGRITY OF THE SAINT ANTONIO BAR...

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8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Sanchez-Aparicio, L. J. Rodriguez-Gonzalvez, P. Gonzalez-Aguilera, d. Ramos, Luis F. Univ Salamanca Dept Cartog & Land Engn High Polytecn Sch Avila Avila Spain Univ Leon Dept Min Technol Topog & Struct Ponferrada Spain Univ Minho ISISE Dept Civil Engn Guimaraes Portugal

Under the framework of the modern theory of restoration, this paper shows the experimental results obtained during the structural diagnosis of one of the most important master gates inside the military modern complex of Almeida in Portugal: the inner master gate of Saint Antonio. This master gate was conceived with the aim of supporting the siege of an early modern army, using to this end a masonry framework filled by a natural soil able to absorb the impacts. However, this infill is promoting the disaggregation of the masonry and thus the reduction of its bearing capacity. In order to evaluate the current and future structural behaviour, it is proposed a method able to combine the terrestrial laser scanner with the limit analysis for masonry constructions. The results obtained by this combination shows that the major barrel vault has, in its current conservation state, enough bearing capacity to support an agglomeration of people. However, it is recommended a material restitution in order to recover the contact are between masonry blocks as well as to recover the architectural interpretation of the element.

关键词： Historical construction Trace Italienne fortress Masonry Laser scanner Structural diagnosis Limit Analysis

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