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.

A Simple and Practical Method for Incorporating Augmented Reality into the Classroom and Laboratory

2018 ◽  
Author(s):  
Kyle Plunkett
Keyword(s):  
Organic Chemistry ◽  
Augmented Reality ◽  
Real Time ◽  
Real World ◽  
Smart Phone ◽  
Practical Method ◽  
Virtual Expert ◽  
Video Projection

This manuscript provides two demonstrations of how Augmented Reality (AR), which is the projection of virtual information onto a real-world object, can be applied in the classroom and in the laboratory. Using only a smart phone and the free HP Reveal app, content rich AR notecards were prepared. The physical notecards are based on Organic Chemistry I reactions and show only a reagent and substrate. Upon interacting with the HP Reveal app, an AR video projection shows the product of the reaction as well as a real-time, hand-drawn curved-arrow mechanism of how the product is formed. Thirty AR notecards based on common Organic Chemistry I reactions and mechanisms are provided in the Supporting Information and are available for widespread use. In addition, the HP Reveal app was used to create AR video projections onto laboratory instrumentation so that a virtual expert can guide the user during the equipment setup and operation.

Augmented Reality on Longwall Face for Unmanned Mining

2010 ◽  
Vol 40-41 ◽  
pp. 388-391 ◽  
Author(s):  
Shou Xiang Zhang
Keyword(s):  
Virtual Reality ◽  
Theoretical Model ◽  
Augmented Reality ◽  
Real Time ◽  
Longwall Face ◽  
3D Registration ◽  
Mining Technology ◽  
Key Technology ◽  
The Real ◽  
Alpha Channel

An unmanned mining technology for the fully mechanized longwall face automation production is proposed and studied. The essential technology will bring the longwall face production into visualization through the Virtual Reality (VR) and Augmented Reality (AR) union. Based on the visual theoretical model of the longwall face, the combination of virtual and reality, the real-time interactive and the 3D registration function were realized. The Key technology and Alpha channel are used to the combination of the real long wall face and the virtual user.

scholarly journals Augmented reality system using lidar point cloud data for displaying dimensional information of objects on mobile phones

2014 ◽  
Vol II-5 ◽  
pp. 153-159 ◽  
Author(s):  
S. Gupta ◽  
B. Lohani
Keyword(s):  
Augmented Reality ◽  
Point Cloud ◽  
Smart Phone ◽  
Research Problem ◽  
Point Cloud Data ◽  
Registration Method ◽  
Cloud Data ◽  
Augmented Reality System ◽  
The Status ◽  
Intensity Image

Mobile augmented reality system is the next generation technology to visualise 3D real world intelligently. The technology is expanding at a fast pace to upgrade the status of a smart phone to an intelligent device. The research problem identified and presented in the current work is to view actual dimensions of various objects that are captured by a smart phone in real time. The methodology proposed first establishes correspondence between LiDAR point cloud, that are stored in a server, and the image t hat is captured by a mobile. This correspondence is established using the exterior and interior orientation parameters of the mobile camera and the coordinates of LiDAR data points which lie in the viewshed of the mobile camera. A pseudo intensity image is generated using LiDAR points and their intensity. Mobile image and pseudo intensity image are then registered using image registration method SIFT thereby generating a pipeline to locate a point in point cloud corresponding to a point (pixel) on the mobile image. The second part of the method uses point cloud data for computing dimensional information corresponding to the pairs of points selected on mobile image and fetch the dimensions on top of the image. This paper describes all steps of the proposed method. The paper uses an experimental setup to mimic the mobile phone and server system and presents some initial but encouraging results

scholarly journals Augmented RealityAugmented Reality

2021 ◽  
Vol 9 (VII) ◽  
pp. 3510-3522
Author(s):  
Ankur Kumar
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
The Real ◽  
Time Performance ◽  
Real Environment ◽  
Augmented Reality System ◽  
Current State

Augmented Reality (AR), which blends virtual information with the real environment in real-time performance, is constantly evolving and becoming more sophisticated and robust. It is critical to ensure that the augmented reality system is accepted and successful. This paper primarily discusses the current state of AR applications and the various fields in which AR is being used.

A Simple and Practical Method for Incorporating Augmented Reality into the Classroom and Laboratory

2018 ◽  
Author(s):  
Kyle Plunkett
Keyword(s):  
Organic Chemistry ◽  
Augmented Reality ◽  
Real Time ◽  
Real World ◽  
Smart Phone ◽  
Practical Method ◽  
Virtual Expert ◽  
Video Projection

This manuscript provides two demonstrations of how Augmented Reality (AR), which is the projection of virtual information onto a real-world object, can be applied in the classroom and in the laboratory. Using only a smart phone and the free HP Reveal app, content rich AR notecards were prepared. The physical notecards are based on Organic Chemistry I reactions and show only a reagent and substrate. Upon interacting with the HP Reveal app, an AR video projection shows the product of the reaction as well as a real-time, hand-drawn curved-arrow mechanism of how the product is formed. Thirty AR notecards based on common Organic Chemistry I reactions and mechanisms are provided in the Supporting Information and are available for widespread use. In addition, the HP Reveal app was used to create AR video projections onto laboratory instrumentation so that a virtual expert can guide the user during the equipment setup and operation.

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”.

scholarly journals High Real-Time Design of Digital Pulse Compression Based on FPGA

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Xiujie Qu ◽  
Cuimei Ma ◽  
Shixin Zhang ◽  
Sitong Lian
Keyword(s):  
Real Time ◽  
Processing Speed ◽  
Pulse Compression ◽  
Fourier Transforms ◽  
Experimental Result ◽  
Parallel Structure ◽  
Time Performance ◽  
Fft Processor ◽  
Digital Pulse ◽  
Floating Point Computation

Because of the poor real-time performance of in-place fast Fourier transforms, a reconfigurable radix-4 FFT processor is studied and designed, which is based on decimation-in-time and single floating-point computation. The proposed method adopts “pipeline and parallel” structure for accessing multiple memories to improve the FFT processing speed, and then it is applied to digital pulse compression. The experimental result shows that the proposed FFT based on radix-4 computation can implement digital pulse compression rapidly under no adding hardware resources. The proposed method can be also applied to other radix FFTs.

An Underwater Image Real-Time Registration Approach Based on SURF

2013 ◽  
Vol 437 ◽  
pp. 888-893 ◽  
Author(s):  
Chao Li ◽  
Yong Jie Pang ◽  
Ming Wei Sheng ◽  
Hai Huang
Keyword(s):  
Image Registration ◽  
Real Time ◽  
Median Filter ◽  
Filter Method ◽  
Interest Points ◽  
Registration Method ◽  
Speeded Up Robust Features ◽  
Time Performance ◽  
Underwater Image ◽  
Image Contrast Enhancement

In order to meet the demands of real-time performance and robustness for underwater image registration, a novel image registration method based on the SURF (Speeded-Up Robust Features) algorithm is proposed. During the image acquisition process, noise was generated inevitably because of many influencing factors such as atmospheric turbulence, camera defocus during image capturing or relative motion between the camera and the object. Firstly, median filter method was involved during the image preprocessing for underwater image contrast enhancement. Secondly, the SURF algorithm was used to obtain the interest points of the reference and registering images, and the nearest neighbor method was applied to search for coarse matching points. To obtain the precise matching points, the dominant orientations of the coarse matching points were used to eliminate the mismatching points. Finally, the precise matching points were adapted to calculate the mapping relationship between the registering and reference images, the bilinear interpolation method was applied to resample the registering image, and then the registered image was obtained. Experimental results indicated that the proposed preprocessing methods obviously enhanced the image quality, and the introduced image registration approach effectively improved the real-time performance and guaranteed the robustness at the same time.

An Improved Background Update Algorithm and Application in Traffic Engineering

2014 ◽  
Vol 620 ◽  
pp. 228-232
Author(s):  
Shi Song Zhu ◽  
Hai Yan Zhang ◽  
Cui Yun Zhang ◽  
Hong Jin Zhu
Keyword(s):  
Real Time ◽  
Traffic Engineering ◽  
Experimental Result ◽  
Improved Method ◽  
Time Performance ◽  
Background Updating ◽  
Permissible Range ◽  
The Common ◽  
Background Update ◽  
Statistical Background

The statistical histogram algorithm is one of the common background update algorithms. Considering the statistical histogram algorithm disadvantages of large complex computation, the paper proposes an improved method named fixed window statistical background updating algorithm. The algorithm sets a window which contains N records for each pixel point firstly, every record records value in the permissible range of error and the number of pixel point occurrence, and then counting pixel values for every record through statistical histogram algorithm. When the window is full, the new pixel values will replace the smaller counting, while the pixel which counting larger will be adaptively updated by adaptive background updating formula. The experimental result shows that this method has a high real-time performance and robustness in background updating.

PENERAPAN AUGMENTED REALITY SEBAGAI MEDIA PENGENALAN KAMPUS 2 ITN MALANG ( STUDI KASUS TEKNIK INFORMATIKA )

2020 ◽  
Vol 4 (1) ◽  
pp. 295-302
Author(s):  
Arbiansyah Rizki Tri Harnanda ◽  
Yosep Agus Pranoto ◽  
F.X Ariwibisono
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
Smart Phone

ABSTRAK   Brosur adalah sebuah media poromosi yang dapat menyampaikan sebuah informasi yang berfungsi untuk memberikan informasi kepada calon konsumen untuk mengetahui kelebihan jasa dan produk yang ditawarkan dalam bentuk selembaran kertas. Dengan adanya brosur di harapkan calon konsumen dapat mengetahui produk yg di tawarkan dan dapat menarik perhatian dari calon konsumen.                     Augmented Reality adalah sebuah teknologi yang menggabungkan antara objek maya seperti objek 2D atau 3D ke dalam dunia nyata dengan bantuan kamera dari smartphone secara Real time. Teknologi pada Augmented Reality jika di terapkan ke dalam media brosur akan  menjadikan sebuah sarana promosi baru yang lebih interaktif serta inovatif untuk menarik minat calon mahasiswa baru. Hasil dari penelitian ini berupa aplikasi Penerapan Teknologi Augmented Reality Sebagai Media Pengenalan Teknik informatika Kampus 2 ITN, fitur yang ada di aplikasi ini dapat di jalankan semuanya dengan baik tanpa ada kendala / bag. selanjutnya aplikasi ini juga dapat menampilkan sebuah objek gedung 3D serta juga dapat menampilkan sebuah video dan dapat berjalan dengan lancar dengan spesifikasi smart phone Ram di atas 4GB, Selanjutnya aplikasi ini juga dapat menscan marker dengan jarak ideal antara 10 cm hingga 20 cm. Dan aplikasi ini juga dapat menscan marker dengan intensitas cahaya antara 14 lux hingga 162 lux serta aplikasi ini dapat menscan marker dengan sudut kemiringan 90° hingga 30°. Kata Kunci : ITN Malang, Penerapan Augmented Reality, Android, Informatika ITN Malang.

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