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Visualization of real-time displacement time history superimposed with dynamic experiments using wireless smart sensors and augmented reality

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Earthquake Engineering and Engineering Vibration 2023年第3期22卷 573-588页

作者： Marlon Aguero Derek Doyle David Mascarenas Fernando Moreu Department of Civil Construction and Environmental EngineeringUniversity of New MexicoCentennial Engineering Center 3056MSC011070210 University Blvd NEAlbuquerqueNM 87131USA Air Force Research Laboratory Space Vehicles DirectorateKirtland Air Force BaseAlbuquerqueNM 87117USA Engineering Institute Los Alamos National LaboratoryLos AlamosNM 8754USA

Wireless smart sensors(WSS)process field data and inform inspectors about the infrastructure health and *** bridge engineering,inspectors need reliable data about changes in displacements under loads to make correct decisions about repairs and *** to displacement information in the field and in real-time remains a challenge as inspectors do not see the data in real *** data from WSS in the field undergoes additional processing and is seen at a different *** inspectors were able to see structural displacements in real-time at the locations of interest,they could conduct additional observations,creating a new,information-based,decision-making reality in the *** paper develops a new,human-centered interface that provides inspectors with real-time access to actionable structural data during inspection and monitoring enhanced by augmented reality(AR).It summarizes and evaluates the development and validation of the new human-infrastructure interface in laboratory *** experiments demonstrate that the interface that processes all calculations in the AR device accurately estimates dynamic displacements in comparison with the *** this new AR interface tool,inspectors can observe and compare displacement data,share it across space and time,visualize displacements in time history,and understand structural deflection more accurately through a displacement time history visualization.

关键词： wireless smart sensor monitoring augmented reality displacement acceleration human-infrastructure interface

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Monocular Visual SLAM for Markerless Tracking Algorithm to augmented reality

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Intelligent Automation & Soft Computing 2023年第2期35卷 1691-1704页

作者： Tingting Yang Shuwen Jia Ying Yu Zhiyong Sui Shcool of Information and Intelligence Engineering University of Sanya572000SanyaChina Erik Jonsson School of Engineering and Computer Science The University of Texas at DallasRichardson75080-3021USA

augmented reality(AR)tries to seamlessly integrate virtual content into the real world of the ***,the virtual content would behave exactly like real *** necessitates a correct and precise estimation of the user’s viewpoint(or that of a camera)with regard to the virtual content’s coordinate ***,the real-time establishment of 3-dimension(3D)maps in real scenes is particularly important for augmented reality *** in this paper,we integrate Simultaneous Localization and Mapping(SLAM)technology into augmented *** research is to implement an augmented reality system without markers using the ORB-SLAM2 framework *** this paper we propose an improved method for Oriented FAST and Rotated BRIEF(ORB)feature extraction and optimized key frame selection,as well as the use of the Progressive Sample Consensus(PROSAC)algorithm for planar estimation of augmented reality implementations,thus solving the problem of increased sys-tem runtime because of the loss of large amounts of texture information in *** this paper,we get better results by comparing experiments and data ***,there are some improved methods of PROSAC algorithm which are more suitable for the detection of plane feature points.

关键词： Markerless tracking algorithm ORB-SLAM2 framework algorithm augmented reality

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Designing interactive glazing through an engineering psychology approach:Six augmented reality scenarios that envision future car human-machine interface

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Virtual reality & Intelligent Hardware 2023年第2期5卷 157-170页

作者： Wei LIU Yancong ZHU Ruonan HUANG Takumi OHASHI Jan AUERNHAMMER Xiaonan ZHANG Ce SHI Lu WANG Faculty of Psychology Beijing Normal UniversityBeijing 100875China School of Biological Science and Medical Engineering Beihang UniversityBeijing 100191China School of Environment and Society Tokyo Institute of TechnologyTokyo 152-8550Japan Department of Mechanical Engineering Stanford UniversityStanford CA94305USA Sekurit R&D Saint-GoBain ResearchShanghai 200245China

Background With an increasing number of vehicles becoming autonomous,intelligent,and connected,paying attention to the future usage of car human-machine interface with these vehicles should become more *** studies have addressed car HMI but were less attentive to designing and implementing interactive glazing for every day(autonomous)driving *** Reflecting on the literature,we describe an engineering psychology practice and the design of six novel future user scenarios,which envision the application of a specific set of augmented reality(AR)support user ***,we conduct evaluations on specific scenarios and experiential prototypes,which reveal that these AR scenarios aid the target user groups in experiencing a new type of *** overall evaluation is positive with valuable assessment results and *** This study can interest applied psychology educators who aspire to teach how AR can be operationalized in a human-centered design process to students with minimal pre-existing expertise or minimal scientific knowledge in engineering psychology.

关键词： augmented reality Interactive glazing Engineering psychology Car human-machine interface Human-computer interaction Human-centered design User experience Generation Z

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augmented reality SYSTEM FOR AIDING ENGINEERING DESIGN PROCESS OF MACHINERY SYSTEMS

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Journal of Systems Science and Systems Engineering 2011年第3期20卷 294-309页

作者： Marcin JANUSZKA Wojciech MOCZULSKI Department of Fundamentals of Machinery Design Silesian University of TechnologyKonarskiego 18A44-100 GliwicePoland

The paper presents the application of augmented reality for aiding product design and development of machinery systems. augmented reality technology integrates an interactive computer-generated word with an interactive real word in such a way that they appear as one environment. AR technology can enhance a user＇s perception of the real world with information that is not actually part of the scene but is relevant to the user＇s present activity. Presented in the AR system is a mode for changing views of data - especially 3D models - allowing the user to understand the prospective machinery system in a more comprehensive way, thus making the design process more efficient than the one supported by conventional present-day CAD systems. The presented prototype system contains an expert system integrated with AR system and allows the delivering of knowledge to the designer about successive steps of the design process of a mobile robot and practical solutions of realized constructional problems. An approach concerning AR enables the system user to analyze and verify solutions （represented as 3D models） relative to real scenes/objects. This approach is advantageous because the real environment around us often provides a vast amount of information that is difficult to duplicate in a computer. In some cases, the application of an AR system could be an optimal way to verify developed products.

关键词： augmented reality human-computer interface CAD design for customer satisfaction computer-aided decision making

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augmented reality technology for preoperative planning and intraoperative navigation during hepatobiliary surgery: A review of current methods

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Hepatobiliary & Pancreatic Diseases International 2018年第2期17卷 101-112页

作者： Rui Tang Long-Fei Ma Zhi-Xia Rong Mo-Dan Li Jian-Ping Zeng Xue-Dong Wang Hong-En Liao Jia-Hong Dong Department of Hepatopancreatobiliary Surgery Beijing Tsinghua Changgung Hospital School of Clinical Medicine No.168 Litang Road Changping DistrictTsinghua University Department of Biomedical Engineering School of Medicine Tsinghua University Service de Chirurgie Hépatobiliaire Pancréatique et de Transplantation Hépatique Centre Hospitalier de l'Université de Montréal(CHUM) Université de Montréal

Background: augmented reality(AR) technology is used to reconstruct three-dimensional(3D) images of hepatic and biliary structures from computed tomography and magnetic resonance imaging data, and to superimpose the virtual images onto a view of the surgical field. In liver surgery, these superimposed virtual images help the surgeon to visualize intrahepatic structures and therefore, to operate precisely and to improve clinical *** Sources: The keywords "augmented reality", "liver", "laparoscopic" and "hepatectomy" were used for searching publications in the Pub Med database. The primary source of literatures was from peer-reviewed journals up to December 2016. Additional articles were identified by manual search of references found in the key ***: In general, AR technology mainly includes 3D reconstruction, display, registration as well as tracking techniques and has recently been adopted gradually for liver surgeries including laparoscopy and laparotomy with video-based AR assisted laparoscopic resection as the main technical application. By applying AR technology, blood vessels and tumor structures in the liver can be displayed during surgery,which permits precise navigation during complex surgical procedures. Liver transformation and registration errors during surgery were the main factors that limit the application of AR ***: With recent advances, AR technologies have the potential to improve hepatobiliary surgical procedures. However, additional clinical studies will be required to evaluate AR as a tool for reducing postoperative morbidity and mortality and for the improvement of long-term clinical outcomes. Future research is needed in the fusion of multiple imaging modalities, improving biomechanical liver modeling,and enhancing image data processing and tracking technologies to increase the accuracy of current AR methods.

关键词： augmented reality Image-guided surgery Liver surgery 3D technology

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augmented reality techniques assisted laparoscopic ureteroureterostomy for retrocaval ureter

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Chinese Medical Journal 2012年第22期125卷 4158-4159页

作者： Wu, Jungle Chi-hsiang Lin Mao-sheng Wu Hurng-sheng Liu, Jack Kai-che Chang Bing Show Chwan Mem Hosp Dept Surg Asian Inst TeleSurg Triserv Gen Hosp Changhua 500 Taiwan Chang Bing Show Chwan Mem Hosp Dept Med Image Res Asian Inst TeleSurg Changhua 500 Taiwan Chien Kuo Technol Univ Dept Urol Asian Inst TeleSurg Changhua 500 Taiwan

To the editor： Retrocaval ureter is an uncommon congenital anomaly resulting from persistence of the posterior cardinal veins during embryotogic development, This can cause an obstruction of the right kidney, which resulting in right flank pain and obstructive nephropathy. Laparoscopic surgery is a suitable therapy for treating this disease with decreased convalescence and analgesic requirements. Herein we applied the augmented reality （AR） on one patient with retrocaval ureter, which treated by laparoscopic ureteroureterostomy. The postoperative course was uneventful.

关键词： congenital anomaly augmented reality laparoscopic ureteroureterostomy

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augmented reality-based visual-haptic modeling for thoracoscopic surgery training systems

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Virtual reality & Intelligent Hardware 2021年第4期3卷 274-286页

作者： Yonghang TAI Junsheng SHI Junjun PAN Aimin HAO Victor CHANG Yunnan Key Lab Optoelectronic Information Technology Yunnan Normal UniversityKunming 650500China State Key Laboratory of Virtual reality Technology and Systems Beihang UniversityBeijing 100191China School of Computing Engineering and Digital TechnologiesTeesside UniversityMiddlesbrough TS13BXUK

Background Compared with traditional thoracotomy,video-assisted thoracoscopic surgery(VATS)has less minor trauma,faster recovery,higher patient compliance,but higher requirements for *** surgery training simulation systems are important and have been widely used in Europe and *** reality(AR)in surgical training simulation systems significantly improve the training effect of virtual surgical training,although AR technology is still in its initial *** reality has gained increased attention in technology-driven modern medicine but has yet to be used in everyday *** This study proposed an immersive AR lobectomy within a thoracoscope surgery training system,using visual and haptic modeling to study the potential benefits of this critical *** content included immersive AR visual rendering,based on the cluster-based extended position-based dynamics algorithm of soft tissue physical ***,we designed an AR haptic rendering systems,whose model architecture consisted of multi-touch interaction points,including kinesthetic and pressure-sensitive ***,based on the above theoretical research,we developed an AR interactive VATS surgical training *** Twenty-four volunteers were recruited from the First People's Hospital of Yunnan Province to evaluate the VATS training ***,content,and construct validation methods were used to assess the tactile sense,visual sense,scene authenticity,and simulator *** The results of our construction validation demonstrate that the simulator is useful in improving novice and surgical skills that can be retained after a certain period of *** video-assisted thoracoscopic system based on AR developed in this study is effective and can be used as a training device to assist in the development of thoracoscopic skills for novices.

关键词： augmented reality VATS Surgery training XPBD

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Neural compositing for real-time augmented reality rendering in low-frequency lighting environments

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Science China(Information Sciences) 2021年第2期64卷 139-153页

作者： Shengjie MA Qian SHEN Qiming HOU Zhong REN Kun ZHOU State Key Lab of CAD&CG Zhejiang University ZJU-FaceUnity Joint Lab of Intelligent Graphics

We present neural compositing, a deep-learning based method for augmented reality rendering,which uses convolutional neural networks to composite rendered layers of a virtual object with a real photograph to emulate shadow and reflection effects. The method starts from estimating the lighting and roughness information from the photograph using neural networks, renders the virtual object with a virtual floor into color, shadow and reflection layers by applying the estimated lighting, and finally refines the reflection and shadow layers using neural networks and blends them with the color layer and input image to yield the output image. We assume low-frequency lighting environments and adopt PRT(precomputed radiance transfer) for layer rendering, which makes the whole pipeline differentiable and enables fast end-to-end network training with synthetic scenes. Working on a single photograph, our method can produce realistic reflections in a real scene with spatially-varying material and cast shadows on background objects with unknown geometry and material at real-time frame rates.

关键词： augmented reality neural networks differentiable renderer reflection shadow

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Fiducial Marker Based on Projective Invariant for augmented reality

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Journal of Computer Science & Technology 2007年第6期22卷 890-897页

作者：李玉王涌天刘越 School of Information Science and Technology Beijing Institute of Technology

Fiducial marker based augmented reality has many applications. So far the inner pattern of the fiducial marker is always used to encode the markers. Thus a large portion of the fiducial marker image is used for encoding instead of providing corresponding feature points for pose accuracy. This paper presents a novel method which utilizes directly the projective invariant contained in the positional relation of the corresponding feature points to encode the marker. Tile proposed method does not require the region of pattern image for encoding any more and can provide more corresponding feature points so that higher pose accuracy can be achieved easily. Many related approaches such as cumulative distribution function, reprojection verification and robust process are proposed to overcome the problem of sensibility of the projective invariant. Experimental results show that the proposed fiducial marker system is reliable and robust, and can provide higher pose accuracy than that achieved by existing fiducial marker systems.

关键词： augmented reality fiducial marker pose estimation projective invariant registration

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Aligning Education with Vision 2030 Using augmented reality

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Computer Systems Science & Engineering 2021年第2期36卷 339-351页

作者： Raniyah Wazirali College of Computing and Informatics Saudi Electronic UniversitySaudi ArabiaRiyadh

Vision 2030 requires a new generation of people with a wide variety of abilities,talents,and *** adoption of augmented reality(AR)and virtual reality is one possible way to align education with Vision *** technologies like AR are rapidly becoming powerful and versatile enough to be adopted in education to achieve this *** such as AR could be beneficial tools to enhance maintainable growth in *** reviewed the most recent studies in augmented reality to check its appropriateness in aligning with the educational goals of Vision ***,the various definitions,terminologies,and technologies of AR are described ***,the specific characteristics and benefits of AR systems are *** may be a significance of the pedagogical method used by adapting the AR scheme and the consistency of the equipment and learning ***,three kinds of instructional methods that stress roles,location,and tasks were *** kind of learning that is offered by the distinct kinds of AR approaches is elaborated *** technological,pedagogical,learning problems experienced with AR are *** potential solutions for a few of the issues experienced and the topics for subsequent research are presented in this article.

关键词： augmented reality AR VR 2030 vision education

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