scholarly journals Demonstration of protocol for computer-aided forensic facial reconstruction with free software and photogrammetry

2014 ◽  
Vol 2 (1) ◽  
pp. 77 ◽  
Author(s):  
Cícero André da Costa Moraes ◽  
Paulo Eduardo Miamoto Dias ◽  
Rodolfo Francisco Haltenhoff Melani
Keyword(s):  
Point Cloud ◽  
Technological Development ◽  
Skin Layer ◽  
Free Software ◽  
Facial Reconstruction ◽  
Digital Cameras ◽  
Basic Training ◽  
3D Mesh ◽  
Computer Aided ◽  
Made In

Purpose: Forensic facial reconstruction (FFR) is an auxiliary technique that approximates a face in order to generate identifications. Technological development allows access to open software that can be applied to FFR. The demonstrated protocol has features from creating 3D replicas of the skull to finishing and displaying the reconstruction. PPT GUI is used for 3D scanning, and the resulting point cloud is converted into a 3D mesh in MeshLab. The sculpture is made in Blender, according to the user’s preferred technique. The adaptation of the skin layer and finishing of the reconstruction is optimized with the use of templates. In this phase, details can also be hand-carved. Allied to basic training in the software featured in this protocol, the open access to these tools and its independence of imaging hardware other than digital cameras is an advantage to its application in forensic and research contexts.

Visualizing 3D Molecular Structures Using an Augmented Reality App

2019 ◽  
Author(s):  
Kristina Eriksen ◽  
Bjarne Nielsen ◽  
Michael Pittelkow
Keyword(s):  
Augmented Reality ◽  
Small Molecules ◽  
Computer Modelling ◽  
Simple Procedure ◽  
3D Structure ◽  
Molecular Structures ◽  
Free Software ◽  
Programming Skills ◽  
2D Space ◽  
Made In

<p>We present a simple procedure to make an augmented reality app to visualize any 3D chemical model. The molecular structure may be based on data from crystallographic data or from computer modelling. This guide is made in such a way, that no programming skills are needed and the procedure uses free software and is a way to visualize 3D structures that are normally difficult to comprehend in the 2D space of paper. The process can be applied to make 3D representation of any 2D object, and we envisage the app to be useful when visualizing simple stereochemical problems, when presenting a complex 3D structure on a poster presentation or even in audio-visual presentations. The method works for all molecules including small molecules, supramolecular structures, MOFs and biomacromolecules.</p>

Geometric simulation for warp-knitted tubular bandages with the mesh model

2021 ◽  
pp. 004051752110138
Author(s):  
Haisang Liu ◽  
Gaoming Jiang ◽  
Zhijia Dong
Keyword(s):  
Programming Languages ◽  
Three Dimensional ◽  
3D Mesh ◽  
Mesh Model ◽  
Matrix Operations ◽  
Computer Aided ◽  
Spatial Geometry ◽  
3D Mesh Model ◽  
Coordinate Mapping ◽  
Geometric Simulation

The purpose of this paper is to geometrically simulate warp-knitted medical tubular bandages with a computer-aided simulator. A flat mesh model is established according to unfolded fabric considering the knitting characteristics of double-needle bed warp-knitted tubular fabrics. Moreover, a 3D (three-dimensional) mesh model corresponding to the actual product shape is created. To better describe the spatial geometry of stitches, eight-point models are introduced, and stitches are generated with the flat mesh model. Founded on matrix operations, the stitch position in the 3D mesh model is determined through coordinate mapping. Various stitch paths are rendered in computer programming languages C# and JavaScript to conduct simulations. Warp-knitted medical tubular bandages with a large number of shapes are effectively modeled.

scholarly journals TO THE QUESTION OF IMPORTANCE OF DEVELOPMENT OF THE HUMANITARIAN SPHERE IN THE CONDITIONS OF MODERN TECHNOLOGICAL PROGRESS

2020 ◽  
pp. 33-36
Author(s):  
Е. В. Яковлева
Keyword(s):  
Spiritual Development ◽  
Social System ◽  
Technological Progress ◽  
Technological Development ◽  
Human Society ◽  
Modern Level ◽  
Scientific Ethics ◽  
Made In

В статье рассматриваются проблемы, связанные с современным уровнем развития науки и техники. Ставится вопрос о рисках, связанных с интенсивным технологическим развитием человеческого общества. Рассматриваются экологический, социальный, геополитический уровни приложения проблемы. Анализируется концепция Э. Фромма о балансе между техническим и духовным развитием, рассматривается теория А. П. Назаретяна о техно-гуманитарном балансе как условии выживания социальной системы. На основании проведенной в статье классификации исследовательских подходов оценивается роль современных исследований в области научной этики в разрешении проблемы и делается вывод о необходимости выхода на уровень практического ее разрешения. Consideration of the problems connected with the modern level of development of science and technology is made in the article. The question of the risks connected with intensive technological development of human society is raised. Ecological, social, geopolitical aspects of a problem are considered. Fromm’s concept about balance between technical and spiritual development is analyzed, A. P. Nazaretyan’s theory about technical and humanitarian balance as a condition of survival of social system is considered. On the basis of the classification of research approaches which is carried out in article the role of modern researches in the field of scientific ethics in solution of the problem is estimated and the conclusion about need of an exit to the level of her practical permission is drawn.

Interaction in Web-Based Learning

2011 ◽  
pp. 1130-1139
Author(s):  
Adams Bodomo
Keyword(s):  
Digital Libraries ◽  
Technological Development ◽  
Local Area ◽  
Digital Cameras ◽  
Web Based ◽  
Knowledge Based ◽  
Information Communications Technology ◽  
Computer Mediated ◽  
Information And Communication ◽  
Word Processors

At the beginning of the 21st century, we are faced with an age of rapid technological development in information and communication. Issues of educational reform have never been more urgent than now. One of the major challenges is how to design our educational system, in general, and our methods of instruction, in particular, to produce graduates who are better prepared to take up jobs in a knowledge-based environment characterized by a pervasive use of information communications technology (ICT). ICTs, especially modern digital ones, include various types of computers; digital cameras; local-area networking; the Internet and the World Wide Web; CD-ROMs and DVDs; and applications such as word processors, spreadsheets, tutorials, simulations, e-mail, digital libraries, computer-mediated conferencing, videoconferencing, and virtual reality (Blurton, 1999). Four main features of these modern digital ICTs make them stand out as very useful educational tools. These are integration of multimedia, flexibility of use, connectivity, and interactivity (Blurton, 1999). The main focus

scholarly journals CBM Resources Estimations for the Development of Coal Mine Methane in the Asturian Central Basin, Spain

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1404
Author(s):  
Pablo Cienfuegos-Suárez ◽  
Efrén García-Ordiales ◽  
Diego Alonso-Fernández ◽  
Jorge Enrique Soto-Yen
Keyword(s):  
Coal Mine ◽  
Coalbed Methane ◽  
Technological Development ◽  
Gas Content ◽  
Central Basin ◽  
Economic Interest ◽  
Coal Seams ◽  
Coal Basin ◽  
Coal Mine Methane ◽  
Made In

New technological development and a best knowledge of the basin allow to have justified expectation to find coalbed methane reserves. Measurements of gas content in unexploited coal seams are made in order to estimate the CBM could revive the economic interest of the Asturian Central Coal Basin (ACCB). According to first estimations based on the studies accomplished, the minimum resources of coalbed methane in the whole of the Asturian Central Coal Basin are in the order of 25,000 Mm3 and the gas content of the coal seams range from 6 m3 to 14 m3/t. The introduction should briefly place the study in a broad context and define the purpose of the work and its significance.

Techniques in facial identification: Computer-aided facial reconstruction using a laser scanner and video superimposition

1996 ◽  
Vol 108 (4) ◽  
pp. 194-200 ◽  
Author(s):  
A. W. Shahrom ◽  
P. Vanezis ◽  
R. C. Chapman ◽  
A. Gonzales ◽  
C. Blenkinsop ◽  
...  
Keyword(s):  
Laser Scanner ◽  
Facial Reconstruction ◽  
Computer Aided ◽  
Facial Identification

Development of Real-Time Collection, Integration, and Sharing Technology for Infrastructure Damage Information

2019 ◽  
Vol 14 (2) ◽  
pp. 333-347 ◽  
Author(s):  
Moemi Shiraishi ◽  
◽  
Hideyuki Ashiya ◽  
Arata Konno ◽  
Kenji Morita ◽  
...  
Keyword(s):  
Disaster Response ◽  
Information Needs ◽  
Technological Development ◽  
Initial Response ◽  
Earthquake Response ◽  
Infrastructure Management ◽  
The 2016 Kumamoto Earthquakes ◽  
Available Information ◽  
2016 Kumamoto Earthquakes ◽  
Made In

At the time of a disaster, Ministry of Land, Infrastructure, Transport and Tourism (MLIT) inspects the facilities under its jurisdiction and promptly collects infrastructure damage information. It may be difficult to grasp the damage information depending on when the disaster occurred; the time, size, and distribution of the damage; the weather; and so forth. Even in such a case, it is necessary to grasp the damage situation based on the limited available information, establish a system for the initial response, and proceed with the disaster response. National Institute for Land and Infrastructure Management (NILIM) has developed the technology to collect infrastructure damage information with the necessary promptness, coverage, and reliability, using every kind of technology available and providing the necessary information for decision making. This study conducted a survey of officials who had been engaged in earthquake response following the 2016 Kumamoto Earthquakes, among others. The necessary technology has been developed to collect, integrate, and share disaster damage information according to the situation by considering that the information needs in disaster response changes from moment to moment, and such technology has been successively implemented on site. This paper describes the results of and the knowledge gained from this technological development and notes the study’s findings on the information needs and the efforts that need to be made in the future.

scholarly journals A comparison of multi-view 3D reconstruction of a rock wall using several cameras and a laser scanner

2014 ◽  
Vol XL-5 ◽  
pp. 573-580 ◽  
Author(s):  
K. Thoeni ◽  
A. Giacomini ◽  
R. Murtagh ◽  
E. Kniest
Keyword(s):  
3D Reconstruction ◽  
Point Cloud ◽  
Laser Scanner ◽  
Ground Truth ◽  
Point Clouds ◽  
Digital Cameras ◽  
Rock Wall ◽  
Geological Features ◽  
Dense Point ◽  
Sharp Edges

This work presents a comparative study between multi-view 3D reconstruction using various digital cameras and a terrestrial laser scanner (TLS). Five different digital cameras were used in order to estimate the limits related to the camera type and to establish the minimum camera requirements to obtain comparable results to the ones of the TLS. The cameras used for this study range from commercial grade to professional grade and included a GoPro Hero 1080 (5 Mp), iPhone 4S (8 Mp), Panasonic Lumix LX5 (9.5 Mp), Panasonic Lumix ZS20 (14.1 Mp) and Canon EOS 7D (18 Mp). The TLS used for this work was a FARO Focus 3D laser scanner with a range accuracy of ±2 mm. The study area is a small rock wall of about 6 m height and 20 m length. The wall is partly smooth with some evident geological features, such as non-persistent joints and sharp edges. Eight control points were placed on the wall and their coordinates were measured by using a total station. These coordinates were then used to georeference all models. A similar number of images was acquired from a distance of between approximately 5 to 10 m, depending on field of view of each camera. The commercial software package PhotoScan was used to process the images, georeference and scale the models, and to generate the dense point clouds. Finally, the open-source package CloudCompare was used to assess the accuracy of the multi-view results. Each point cloud obtained from a specific camera was compared to the point cloud obtained with the TLS. The latter is taken as ground truth. The result is a coloured point cloud for each camera showing the deviation in relation to the TLS data. The main goal of this study is to quantify the quality of the multi-view 3D reconstruction results obtained with various cameras as objectively as possible and to evaluate its applicability to geotechnical problems.

scholarly journals Usability Analysis of the Virtual Reality Techniques to Risk Assessment Made in the Course of Machinery Design Process / Badania Użyteczności Technik Rzeczywistości Wirtualnej Do Prowadzenia Oceny Ryzyka Przy Projektowaniu Maszyn

2012 ◽  
Vol 23 (1) ◽  
pp. 121-132
Author(s):  
Marek Dźwiarek ◽  
Tomasz Strawiński ◽  
Jarosław Jankowski
Keyword(s):  
Risk Assessment ◽  
Virtual Reality ◽  
User Testing ◽  
Inspection Method ◽  
Testing Method ◽  
Computer Aided ◽  
Usability Analysis ◽  
The Matrix ◽  
Machinery Design ◽  
Made In

Abstract The scope of the project covers the development of a method for assessment of risk related to machinery, based on the computer-aided virtual reality technique. The investigations started with the formulation of the matrix of correspondence between the hazards and functions performed by the VR using document-based inspection method based on documentation of the 3 machines. Further investigations have been conducted by Expert Inspection method using virtual models of 3 machines. It was proved that the immersive projection technology were highly usable in the assessment of risk involved by mechanical hazards and arriving at more accurate results necessary for machine assessment in view of ergonomic then the HDM techniques. In further research the usability of the developed method will be investigated using the User Testing method.

scholarly journals Workflow of CAD / CAM Scoliosis Brace Adjustment in Preparation Using 3D Printing

2017 ◽  
Vol 11 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Hans-Rudolf Weiss ◽  
Nicos Tournavitis ◽  
Xiaofeng Nan ◽  
Maksym Borysov ◽  
Lothar Paul
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Short Communication ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design ◽  
Cam Software ◽  
Made In

Background: High correction bracing is the most effective conservative treatment for patients with scoliosis during growth. Still today braces for the treatment of scoliosis are made by casting patients while computer aided design (CAD) and computer aided manufacturing (CAM) is available with all possibilities to standardize pattern specific brace treatment and improve wearing comfort. Objective: CAD / CAM brace production mainly relies on carving a polyurethane foam model which is the basis for vacuuming a polyethylene (PE) or polypropylene (PP) brace. Purpose of this short communication is to describe the workflow currently used and to outline future requirements with respect to 3D printing technology. Method: Description of the steps of virtual brace adjustment as available today are content of this paper as well as an outline of the great potential there is for the future 3D printing technology. Results: For 3D printing of scoliosis braces it is necessary to establish easy to use software plug-ins in order to allow adding 3D printing technology to the current workflow of virtual CAD / CAM brace adjustment. Textures and structures can be added to the brace models at certain well defined locations offering the potential of more wearing comfort without losing in-brace correction. Conclusions: Advances have to be made in the field of CAD / CAM software tools with respect to design and generation of individually structured brace models based on currently well established and standardized scoliosis brace libraries.

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