Interactive walkthrough of large 3D models of buildings on mobile devices

2007 ◽  
Author(s):  
Alessandro Mulloni ◽  
Daniele Nadalutti ◽  
Luca Chittaro
Keyword(s):  
Mobile Devices ◽  
3D Models ◽  
Interactive Walkthrough

scholarly journals An Augmented Reality Tool for Teaching Application in the Agronomy Domain

2020 ◽  
Vol 10 (10) ◽  
pp. 3632 ◽  
Author(s):  
Dolores Parras-Burgos ◽  
Daniel G. Fernández-Pacheco ◽  
Thomas Polhmann Barbosa ◽  
Manuel Soler-Méndez ◽  
José Miguel Molina-Martínez
Keyword(s):  
Augmented Reality ◽  
Mobile Devices ◽  
Learning Strategies ◽  
New Technologies ◽  
3D Models ◽  
Free Access ◽  
Teaching Innovation ◽  
Agricultural Engineering ◽  
Graphic Representations ◽  
Teaching Learning

Nowadays, the combination of new technologies and the use of mobile devices opens up a new range of teaching–learning strategies in different agricultural engineering degrees. This article presents an augmented reality tool that allows for improved spatial viewing for students who have certain difficulties with viewing graphic representations of agronomic systems and devices. This tool is known as ARTID (Augmented Reality for Teaching, Innovation and Design) and consists in a free-access mobile application for devices using the Android operating system. The proposed method provides each exploded drawing or overall drawing with a QR code that can be used by students to view their 3D models by augmented reality in their own mobile devices. An evaluation experience was carried out to assess the validity of the tool on different devices and the acceptance and satisfaction level of this kind of resources in subjects of graphic expression in engineering. Finally, an example of application in the agronomic domain is provided by the 3D virtual model of portable ferticontrol equipment that comprises the different structures and tanks, which, if viewed by conventional graphical representations, may entail a certain level of difficulty. Thanks to this tool, reality can be merged with the virtual world to help favour the understanding of certain concepts and to increase student motivation in agronomy studies.

scholarly journals POSSIBILITIES OF SPATIAL CORRELATION OF 3D MODELS IN AN ARCHAEOLOGICAL AUGMENTED REALITY APPLICATION

2021 ◽  
Vol XLVI-M-1-2021 ◽  
pp. 355-359
Author(s):  
D. Kaimaris ◽  
T. Roustanis ◽  
K. Klimantakis ◽  
I. A. Karolos ◽  
P. Patias
Keyword(s):  
Augmented Reality ◽  
Mobile Devices ◽  
3D Models ◽  
Archaeological Sites ◽  
Detection And Tracking ◽  
Augmented Reality Application ◽  
Building Walls ◽  
First Time ◽  
Made In

Abstract. The use of Augmented Reality (AR) technology is widespread in countless archaeological sites and a variety of applications. Archaeological excavations lead to archaeological finds, some of which are transported for preservation and then for exhibition in museums (jewelry, vases, etc.), while another part of them is documented in detail and remains in situ (eg building walls), roads, grave covers, etc.). However, after the registration of the archaeological finds, it is impossible to observe them. As part of our research project, we will develop for the first time AR methodology and procedures for the observation of covered archaeological finds on mobile devices (smart phones, tablets), which were registered after their documentation. AR technology in recent years has seen great growth in terms of implementation platforms and available software, as well as the tools developed to support it. These tools either make their appearance in the form of frameworks, extending the capabilities of an existing engine, or function as independent services. At the same time, progress has been made in the field of sensors of mobile devices, which makes the compatibility of hardware and software another issue to be researched. As part of the development of the above application for mobile devices, an evaluation is made of the most widespread AR Frameworks that support the Unity3d Game Engine and the compatibility / interoperability with the sensors of different categories of mobile devices. The frameworks were checked and evaluated for placement and tracking of the positions of the 3D covered objects. In this paper also, methodologies and techniques used in space detection and tracking are presented and evaluated.

scholarly journals Augmented reality in the dynamic world of virtual tourism

2021 ◽  
Vol 942 (1) ◽  
pp. 012031
Author(s):  
Š Mudička ◽  
J Kello
Keyword(s):  
Augmented Reality ◽  
Mobile Devices ◽  
Laser Scanning ◽  
Mixed Reality ◽  
3D Models ◽  
Museum Visitors ◽  
Virtual Tourism ◽  
Potential Benefits ◽  
Visual Properties

Abstract The issue of virtual tourism penetrates the consciousness of many current explorers and visitors to interesting sites and local attractions. Is it really necessary to physically travel to the chosen location, sacrifice time, money and increase your carbon footprint? The article deals with the issue of creating an application using augmented reality for the presentation of 3D models of cultural monuments. The application is designed for mobile devices, on which museum visitors can view digital copies of selected objects of interest. They can also take a virtual tour of the museum through their mobile devices from the comfort of their home. The introductory part of the article describes surveying of shape and visual properties in situ using photogrammetry and laser scanning. The sequent chapters are an analysis of the creation of 3D models in real scale with photorealistic textures and their presentation in a mixed reality environment. In our case, we will specifically focus on the augmented reality application and its development in the Unity multiplatform game engine. The article aims to describe the development of a mobile marker-based AR application briefly, to demonstrate the possibilities of augmented reality and to indicate the potential benefits resulting from the integration of X-reality into our lives. Specifically, we will focus on the application of AR to cartographic works and the enrichment of the content of classical 2D map works and plans with virtually designed 3D models on their surface.

scholarly journals INITIAL EVALUATION OF 3D RECONSTRUCTION OF CLOSE OBJECTS WITH SMARTPHONE STEREO VISION

2018 ◽  
Vol XLII-1 ◽  
pp. 289-293 ◽  
Author(s):  
A. Masiero ◽  
F. Fissore ◽  
M. Piragnolo ◽  
A. Guarnieri ◽  
F. Pirotti ◽  
...  
Keyword(s):  
3D Reconstruction ◽  
Mobile Devices ◽  
Stereo Vision ◽  
Vision System ◽  
Focal Length ◽  
Low Cost ◽  
3D Models ◽  
Discrimination Ability ◽  
Depth Discrimination ◽  
Small Baseline

<p><strong>Abstract.</strong> The Worldwide spread of relatively low cost mobile devices embedded with dual rear cameras enables the possibility of exploiting smartphone stereo vision for producing 3D models. Despite such idea is quite attractive, the small baseline between the two cameras restricts the depth discrimination ability of this kind of stereo vision systems. This paper presents the results obtained with a smartphone stereo vision system by using two rear cameras with different focal length: this operating condition clearly reduces the matchable area. Nevertheless, 3D reconstruction is still possible and the obtained results are evaluated for several camera-object distances.</p>

scholarly journals De la fotogrametría a la difusión del patrimonio arqueológico mediante game engines: Menga un caso de estudio

2015 ◽  
Vol 6 (12) ◽  
pp. 58 ◽  
Author(s):  
José L. Caro ◽  
Salvador Hansen
Keyword(s):  
Cultural Heritage ◽  
Mobile Devices ◽  
3D Model ◽  
New Technologies ◽  
Low Cost ◽  
3D Models ◽  
Cultural Tourism ◽  
Tourism Education ◽  
Game Engines

<p>Everyone knows the importance of new technologies and the growth they have had in mobile devices. Today in the field of study and dissemination of cultural heritage (including archaeological), the use of digital 3D models and associated technologies are a tool to increase the registration quality and consequently a better basis for interpretation and dissemination for cultural tourism, education and research. Within this area is gaining positions photogrammetry over other technologies due to its low cost. We can generate 3D models from forografí as through a set of algorithms that are able to obtain very approximate models and very realistic textures. In this paper we propose the use of game-engines to incorporate one element diffusion: the ability to navigate the 3D model realistically. As a case study we use a Menga dolmen that will serve as a study and demonstration of the techniques employed. </p>

scholarly journals Multimodal and Multiview Wound Monitoring with Mobile Devices

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 424
Author(s):  
Evelyn Gutierrez ◽  
Benjamín Castañeda ◽  
Sylvie Treuillet ◽  
Ivan Hernandez
Keyword(s):  
Mobile Devices ◽  
3D Model ◽  
Low Cost ◽  
3D Models ◽  
Multiple Views ◽  
Temperature Correlation ◽  
Quantitative Metrics ◽  
Scanning Area ◽  
Commercial Device ◽  
Consistent Information

Along with geometric and color indicators, thermography is another valuable source of information for wound monitoring. The interaction of geometry with thermography can provide predictive indicators of wound evolution; however, existing processes are focused on the use of high-cost devices with a static configuration, which restricts the scanning of large surfaces. In this study, we propose the use of commercial devices, such as mobile devices and portable thermography, to integrate information from different wavelengths onto the surface of a 3D model. A handheld acquisition is proposed in which color images are used to create a 3D model by using Structure from Motion (SfM), and thermography is incorporated into the 3D surface through a pose estimation refinement based on optimizing the temperature correlation between multiple views. Thermal and color 3D models were successfully created for six patients with multiple views from a low-cost commercial device. The results show the successful application of the proposed methodology where thermal mapping on 3D models is not limited in the scanning area and can provide consistent information between multiple thermal camera views. Further work will focus on studying the quantitative metrics obtained by the multi-view 3D models created with the proposed methodology.

scholarly journals 3D Visualization For Augmented Reality In ‘Jajanan Pasar’ Puzzles

2019 ◽  
Vol 11 (2) ◽  
Author(s):  
Jessica Carlina
Keyword(s):  
Augmented Reality ◽  
Mobile Devices ◽  
3D Model ◽  
3D Visualization ◽  
Three Dimensional ◽  
3D Models ◽  
Young Generation ◽  
3D Animation ◽  
Digital World

Jajanan Pasar is a term for Indonesian traditional snacks, a part of Indonesian culture that has been forgotten by the young generation. Three-dimensional (3D) animation and Augmented Reality (AR) can be used as a medium for introducing this culture to children aged 4 to 6. Because, in AR, visual between real and digital world can be altered, so the visual of 3D models can be enjoyed from various sides. This study focuses on 3D visualization for AR that packaged in 5 set of puzzles. Each piece has an illustration of the ingredients for making 5 kinds of Jajanan Pasar, after all, puzzle pieces of each set get arranged, a new 3D model of traditional snacks will be appeared. The data was collected using literature and existing studies method. The purpose of this study is to create an optimal 3D visualization for AR that will be applicated for mobile devices. Conclusion from this project are the polygon count and target marker’s quality, affect the appearance of the 3D model in AR form.

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