scholarly journals Smart Architectural and Urban Heritage: An Applied Reflection

Heritage ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 2044-2053
Author(s):  
Stefano Brusaporci ◽  
Pamela Maiezza
Keyword(s):  
Augmented Reality ◽  
Multimedia Information ◽  
Real Time ◽  
Case Studies ◽  
Digital Technologies ◽  
3D Models ◽  
Current Configuration ◽  
Urban Heritage ◽  
Mobile Ar

The aim of this paper is to present the use of 3D models and augmented reality (AR) to study and communicate architectural and urban values and, therefore, favor the development of dedicated forms of “smart heritage”. The study rises from a reflection on the concept of “heritage”, as defined in the international documents, intended as an evolving idea that puts together tangible and intangible aspects. Moreover, digital technologies favor “phygital” applications where the digital dimension support the traditional ones. In this way, AR allows the superimposition of multimedia information to heritage, respecting the historical matter of the artefacts, and supporting a “smart heritage” application. In particular, mobile AR, with real-time and ubiquitous visualizations, offers the opportunity to show past urban and architectural configurations to investigate and describe the transformations that have led to the current configuration, and consequently highlighting the present historical and architectural values of the buildings. Two case studies are presented: the square of St. Basilio Monastery, with its historical transformations, and the Basilica of Collemaggio, a pivotal building in the rites of “Perdonanza Celestiniana”.

Geologic Modelling Using Augmented Reality

2021 ◽  
Author(s):  
Phathompat Boonyasaknanon ◽  
Raymond Pols ◽  
Katja Schulze ◽  
Robert Rundle
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
3D Models ◽  
New Approach ◽  
Domain Experts ◽  
3D Objects ◽  
Track Record ◽  
Initial Work ◽  
Geologic Model ◽  
Time Critical

Abstract An augmented reality (AR) system is presented which enhances the real-time collaboration of domain experts involved in the geologic modeling of complex reservoirs. An evaluation of traditional techniques is compared with this new approach. The objective of geologic modeling is to describe the subsurface as accurately and in as much detail as possible given the available data. This is necessarily an iterative process since as new wells are drilled more data becomes available which either validates current assumptions or forces a re-evaluation of the model. As the speed of reservoir development increases there is a need for expeditious updates of the subsurface model as working with an outdated model can lead to costly mistakes. Common practice is for a geologist to maintain the geologic model while working closely with other domain experts who are frequently not co-located with the geologist. Time-critical analysis can be hampered by the fact that reservoirs, which are inherently 3D objects, are traditionally viewed with 2D screens. The system presented here allows the geologic model to be rendered as a hologram in multiple locations to allow domain experts to collaborate and analyze the reservoir in real-time. Collaboration on 3D models has not changed significantly in a generation. For co-located personnel the approach is to gather around a 2D screen. For remote personnel the approach has been sharing a model through a 2D screen along with video chat. These approaches are not optimal for many reasons. Over the years various attempts have been tried to enhance the collaboration experience and have all fallen short. In particular virtual reality (VR) has been seen as a solution to this problem. However, we have found that augmented reality (AR) is a much better solution for many subtle reasons which are explored in the paper. AR has already acquired an impressive track record in various industries. AR will have applications in nearly all industries. For various historical reasons, the uptake for AR is much faster in some industries than others. It is too early to tell whether the use of augmented reality in geological applications will be transformative, however the results of this initial work are promising.

scholarly journals A REVIEW OF AUGMENTED REALITY FOR ARCHITECTURE AND CULTURAL HERITAGE VISUALIZATION

2018 ◽  
pp. 65-72
Author(s):  
Isidora Đurić ◽  
Ratko Obradović ◽  
Nebojša Ralević
Keyword(s):  
Augmented Reality ◽  
3D Reconstruction ◽  
Cultural Heritage ◽  
Case Studies ◽  
3D Models ◽  
Real Environment ◽  
Different Types ◽  
The Subject ◽  
Object Features ◽  
Heritage Visualization

This paper presents an overview of the use of Augmented Reality in the area of architecture and cultural heritage visualization. The subject of this research are objects that have significant cultural and historical values which, for different reasons, cannot be perceived in their real environment. Using two case-studies, the processes of 3D reconstruction, optimization and AR presentation of the reality models are described in detail. The 3D models are created by using photogrammetry and the AR visualization is performed by using an existing platform for the AR presentation. The aim of the paper is to emphasize the importance of incorporating photogrammetry and augmented reality for the visualization of different types of object features.

Occlusion Handling in Augmented Reality Using Background-Foreground Segmentation and Projective Geometry

2005 ◽  
Vol 14 (3) ◽  
pp. 264-277 ◽  
Author(s):  
Hee Lin Wang ◽  
Kuntal Sengupta ◽  
Pankaj Kumar ◽  
Rajeev Sharma
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
Structural Model ◽  
Real Life ◽  
3D Models ◽  
Video Stream ◽  
Foreground Segmentation ◽  
Camera Motion ◽  
3D Objects ◽  
Active Research

Developing a seamless merging of real and virtual image streams and 3D models is an active research topic in augmented reality (AR). We propose a method for real-time augmentation of real videos with 2D and 3D objects by addressing the occlusion issue in an unique fashion. For virtual planar objects (such as images), the 2D overlay is automatically overlaid in a planar region selected by the user in the video. The overlay is robust to arbitrary camera motion. Furthermore, a unique background-foreground segmentation algorithm renders this augmented overlay as part of the background if it coincides with foreground objects in the video stream, giving the impression that it is occluded by foreground objects. The proposed technique does not require multiple cameras, camera calibration, use of fiducials, or a structural model of the scene to work. Extending the work further, we propose a novel method of augmentation by using trifocal tensors to augment 3D objects in 3D scenes to similar effect and implement it in real time as a proof of concept. We show several results of the successful working of our algorithm in real-life situations. The technique works on a real-time video from a USB camera, Creative Webcam III, onaPIV1.6GHz system without any special hardware support.

scholarly journals Pengenalan alat musik tradisional Bangka dengan Marker-Based Augmented Reality

2019 ◽  
Vol 5 (2) ◽  
pp. 89 ◽  
Author(s):  
Fransiskus Panca Juniawan ◽  
Dwi Yuny Sylfania ◽  
Harrizki Arie Pradana ◽  
Laurentinus Laurentinus
Keyword(s):  
Augmented Reality ◽  
Light Intensity ◽  
Object Detection ◽  
Real Time ◽  
Performance Test ◽  
3D Models ◽  
Musical Instruments ◽  
Paper Test ◽  
Strongly Agree ◽  
High Level

Dengan berkembangnya teknologi, kesadaran akan pentingnya alat musik tradisional menjadi berkurang. Demikian juga dengan alat musik tradisional Bangka yang mulai kehilangan popularitasnya. Kondisi saat ini, para remaja di Bangka kebanyakan tidak dapat memainkan alat musik tradisionalnya. Begitu juga dengan anak-anak yang belum mengetahui dan bahkan tidak mengenal alat musik tradisional daerah mereka. Jika kondisi ini dibiarkan, dikhawatirkan keberadaan alat musik tradisional Bangka akan hilang, begitu juga dengan sumber daya manusia yang dapat memainkannya. Untuk menghindari hal tersebut, dibuatlah aplikasi pengenalan alat musik tradisional Bangka menggunakan Augmented Reality (AR). AR dipilih karena dapat memberikan gambaran alat musik secara real time dalam bentuk 3D sesuai dengan pergerakan kamera smartphone yang dinamis. Empat objek 3D alat musik yakni dambus, rebab, rebanatamborin, dan gong yang dibuat menggunakan Autodesk Maya. AR yang dibangun menggunakan metode berbasis marker. Metode ini dipilih agar lebih mudah digunakan oleh pengguna yang mayoritasnya adalah anak-anak. Selain itu, kelebihan metode ini memiliki tingkat akurasi posisi yang sangat tinggi. Unity sebagai engine untuk penerapan AR 3D modelling pada sistem Android dan Vuforia SDK sebagai engine pembentuk marker augmented reality. Pengujian fungsional memiliki hasil 100% dengan sistem yang berjalan baik. Hasil pengujian kinerja deteksi objek AR berdasarkan intensitas cahaya diketahui bahwa smartphone yang memiliki dua kamera di bagian belakang dapat mendeteksi objek dengan intensitas cahaya 0 Lux pada malam hari dengan kondisi gelap, sedangkan yang hanya memiliki satu kamera tidak dapat mendeteksi objek. Pengujian warna marker mendapatkan hasil modifikasi warna marker pink, kuning, dan hitam yang masih memungkinkan untuk pendeteksian objek, walaupun objek yang tampil tidak stabil. Dari pengujian kertas marker diketahui bahwa jenis kertas tidak berpengaruh terhadap pendeteksian objek. Pengujian beta dilakukan dengan cara membagikan kuesioner terkait pengalaman pengguna dalam penggunaan sistem. Hasil survei diketahui pengguna merasa sangat setuju dengan nilai sebesar 80%, bahwa penggunaan sistem dapat membantu mereka dalam mengenal alat musik tradisional Bangka.   With the incessant development of technology, awareness on the importance of traditional musical instruments has declined. Similarly, teenagers living in Bangka no longer play their traditional musical instruments, and children are not exposed to their cultural heritage. However, if this continues, it is feared that the existence of traditional Bangka musical instruments will soon go extinct. To avoid this, researchers have proposed an application to identify this media using Augmented Reality (AR). This technique was chosen due to its ability to provide visuals of musical instruments in real time using 3D models in accordance with the dynamic movement of smartphone cameras. This comprises of four 3D objects namely dambus, rebab, rebanatamborin, and gong, which were designed and developed using Autodesk Maya. AR is built using marker-based methods, which was chosen for easy use because majority of its users are children, and its high level of accuracy. Unity was utilized as an engine for its implementation in the Android system, and Vuforia SDK as augmented reality marker-builder engine. Functional testing showed 100% results which means that the system is running well. From the results of the AR object detection performance test based on light intensity it is known that a smartphone with two cameras in the backside has the ability to detect objects with a light intensity of 0 Lux in dark rooms, while the other smartphone with one camera failed to detect the objects. Color testing obtained a modification of marker colors comprising of pink, yellow, and black which are still able to detect objects, although not stable. The paper test marker has no effect on object detection. Beta testing questionnaires were used to obtain information related to user experience. From the survey results, it is known that users strongly agree (80%) that the use of the system helps them to recognize traditional Bangka musical instruments.

scholarly journals Α PATTERN-BASED AUGMENTED REALITY APPLICATION FOR THE DISSEMINATION OF CULTURAL HERITAGE

2021 ◽  
Vol VIII-M-1-2021 ◽  
pp. 57-63
Author(s):  
A.-M. Boutsi ◽  
S. Verykokou ◽  
S. Soile ◽  
C. Ioannidis
Keyword(s):  
Augmented Reality ◽  
Cultural Heritage ◽  
Feature Matching ◽  
3D Models ◽  
Added Value ◽  
Mobile Platforms ◽  
Mobile Ar ◽  
Matching Techniques ◽  
Graphics Engine ◽  
Java Code

Abstract. Augmented Reality (AR) is more than an added value for Cultural Heritage (CH); it is vital for its sustainability, promotion and dissemination, increasing accessibility in CH even during difficult periods of time, like the Covid-19 pandemic. In order to be meaningful and engaging, an AR application should have the following characteristics: easiness of use, high-quality representations and compatibility. This paper presents a marker-less mobile AR application for the display and inspection of high-resolution 3D cultural assets, overlayed on a particular location in the real-world scene. Instead of predefined markers, an image captured by the user is exploited as a pattern for real-time feature matching, pose estimation and scene augmentation. Our approach is based on pure computer vision and photogrammetric techniques, implemented using native C++ and Java code for Android mobile platforms. It is built with the use of the OpenCV library and the OpenGL ES graphics API without any dependencies of AR Software Development Kits (SDKs). Therefore, it supports cross-vendor portability regarding mobile model devices and hardware specifications. The evaluation of the developed application examines the performance of various matching techniques and the overall responsiveness of processing and 3D rendering on mid-range and low-end smartphones. The results showcase the reliability and responsiveness of the pattern recognition as well as the potential of the 3D graphics engine to render and overlay complex 3D models balancing between visual quality and time. The proposed methodology is applied to the Ciborium of the church of St. Charalabos, located at St. Stephen’s Monastery in Meteora, Greece.

A Portable Augmented-Reality Anatomy Learning System Using a Depth Camera in Real Time

2017 ◽  
Vol 79 (3) ◽  
pp. 176-183 ◽  
Author(s):  
Cristina Manrique-Juan ◽  
Zaira V. E. Grostieta-Dominguez ◽  
Ricardo Rojas-Ruiz ◽  
Moises Alencastre-Miranda ◽  
Lourdes Muñoz-Gómez ◽  
...  
Keyword(s):  
High School Students ◽  
Augmented Reality ◽  
Real Time ◽  
3D Models ◽  
The Body ◽  
Learning System ◽  
Microsoft Kinect ◽  
Human Anatomy ◽  
Depth Camera ◽  
School Students

In this paper, we present an augmented reality learning system that uses the input of a depth camera to interactively teach anatomy to high school students. The objective is to exemplify human anatomy by displaying 3D models over the body of a person in real time, using the Microsoft Kinect depth camera. The users can see how bones, muscles, or organs are distributed in their bodies without the use of targets for tracking.

scholarly journals An Improved 3D Registration Method of Mobile Augmented Reality for Urban Built Environment

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Yong Wu ◽  
Weitao Che ◽  
Bihui Huang
Keyword(s):  
Augmented Reality ◽  
Built Environment ◽  
Real Time ◽  
Smart Phone ◽  
Experimental Result ◽  
3D Registration ◽  
Registration Method ◽  
Time Performance ◽  
Building Recognition ◽  
Mobile Ar

3D registration plays a pivotal role in augmented reality (AR) system. The existing methods are not suitable to be applied directly in the mobile AR system for the built environment, with the reasons of poor real-time performance and robustness. This paper proposes an improved 3D registration method of mobile AR for built environment, which is based on SURFREAK and KLT. This method increases the building efficiency of algorithm descriptors and maintains the robustness of the algorithms. To implement and evaluate the registration method, a smart phone-based mobile AR system for built environment is developed. The experimental result shows that the improved method is endowed with higher real-time performance and robustness, and the mobile AR 3D registration can realize a favorable performance and efficiency in the complex built environment. The mobile AR system could be used in building recognition and information augmentation for built environment and further to facilitate location-based games, urban heritage tourism, urban planning, and smart city.

Real-Time Electromagnetic Visualisation using Augmented Reality and Accelerated 3D Models

2021 ◽  
Author(s):  
Bawar Jalal ◽  
Valon Blakaj ◽  
Steve Greedy ◽  
Paul Evans
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
3D Models

scholarly journals A Photogrammetry-Based Workflow for the Accurate 3D Construction and Visualization of Museums Assets

2021 ◽  
Vol 13 (3) ◽  
pp. 486
Author(s):  
Fabrizio Ivan Apollonio ◽  
Filippo Fantini ◽  
Simone Garagnani ◽  
Marco Gaiani
Keyword(s):  
Cultural Heritage ◽  
Real Time ◽  
Case Studies ◽  
Process Evaluation ◽  
Low Cost ◽  
3D Models ◽  
Complex Task ◽  
Geometry Processing ◽  
Novel Approach ◽  
Processing Techniques

Nowadays digital replicas of artefacts belonging to the Cultural Heritage (CH) are one of the most promising innovations for museums exhibitions, since they foster new forms of interaction with collections, at different scales. However, practical digitization is still a complex task dedicated to specialized operators. Due to these premises, this paper introduces a novel approach to support non-experts working in museums with robust, easy-to-use workflows based on low-cost widespread devices, aimed at the study, classification, preservation, communication and restoration of CH artefacts. The proposed methodology introduces an automated combination of acquisition, based on mobile equipment and visualization, based on Real-Time Rendering. After the description of devices used along the workflow, the paper focuses on image pre-processing and geometry processing techniques adopted to generate accurate 3D models from photographs. Assessment criteria for the developed process evaluation are illustrated. Tests of the methodology on some effective museum case studies are presented and discussed.

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