Background, a avaliação de cores é usada na indústria para garantir que as cores de uma imagem ou material sejam idênticas àquelas aprovadas durante o desenvolvimento e que a variação da cor final ...devido ao processo não seja perceptível para o consumidor. Este estudo teve como objetivo a investigação de abordagens e métodos para identificação e avaliação de cores. Uma revisão sistemática da literatura foi realizada com base na seleção de 39 artigos publicados entre 2008 e 2018. Resultados, os resultados desta revisão sistemática devem incentivar o desenvolvimento de métodos de avaliação de cores, particularmente para a indústria direcionada ao consumidor final. Os resultados apontaram a necessidade de mais estudos voltados para a área industrial, particularmente com maior participação de profissionais na validação de novos métodos. Conclusões, este trabalho contribui com a pesquisa bibliográfica e sistemática da literatura e possibilita o mapeamento e o estado de conhecimento atual dos estudos correlatos.
A survey of industrial augmented reality de Souza Cardoso, Luís Fernando; Mariano, Flávia Cristina Martins Queiroz; Zorzal, Ezequiel Roberto
Computers & industrial engineering,
January 2020, 2020-01-00, Volume:
139
Journal Article
Peer reviewed
•State of the art review of Augmented Reality in industrial environments.•Augmented Reality applications to improve complexes process.•Wearable devices and markerless tracking are tendencies to ...improve Augmented Reality applications in production environments.•Considerations to implement Augmented Reality.•Future developments to improve Augmented Reality use in industrial environments.
This article aims to evaluate the impact of Augmented Reality (AR) applicability and usefulness on real industrial processes by employing a systematic literature review (SLR). The SLR was performed in five digital libraries to identify articles and reviews concerning the AR applicability from 2012 to 2018. A patent search in Google’s patents database was also conducted, for the same period. This paper describes how AR has been applied, which industries are most interested in the technology, how the technology has been developed to meet industry needs, as well as the benefits and challenges of AR. This survey concludes by providing a starting point for companies interested in integrating AR into their processes and proposing future directions for AR developers and researchers.
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•A Virtual Reality system to assist in learning implant placement.•Improves visualization and representation of oral anatomy.•Implants can be placed virtually into their ideal ...positions related to the planned restorations.•Free-hand interaction provides additional degrees of freedom and valuable geometrical information.•A study on user acceptance with dentistry professionals.
Tools for training and education of dental students can improve their ability to perform technical procedures such as dental implant placement. Shortage of training can negatively affect dental implantologists’ performance during intraoperative procedures, resulting in lack of surgical precision and, consequently, inadequate implant placement, which may lead to unsuccessful implant supported restorations or other complications.
We designed and developed IMMPLANT a virtual reality educational tool to assist implant placement learning, which allows users to freely manipulate 3D dental models (e.g., a simulated patient's mandible and implant) with their dominant hand while operating a touchscreen device to assist 3D manipulation.
The proposed virtual reality tool combines an immersive head-mounted display, a small hand tracking device and a smartphone that are all connected to a laptop. The operator's dominant hand is tracked to quickly and coarsely manipulate either the 3D dental model or the virtual implant, while the non-dominant hand holds a smartphone converted into a controller to assist button activation and a greater input precision for 3D implant positioning and inclination. We evaluated IMMPLANT's usability and acceptance during training sessions with 16 dental professionals.
The conducted user acceptance study revealed that IMMPLANT constitutes a versatile, portable, and complementary tool to assist implant placement learning, as it promotes immersive visualization and spatial manipulation of 3D dental anatomy.
IMMPLANT is a promising virtual reality tool to assist student learning and 3D dental visualization for implant placement education. IMMPLANT may also be easily incorporated into training programs for dental students.
Towards augmented reality for corporate training Martins, Bruno Rodrigo; Jorge, Joaquim Armando; Zorzal, Ezequiel Roberto
Interactive learning environments,
05/2023, Volume:
31, Issue:
4
Journal Article
Peer reviewed
Studies indicate that Augmented Reality (AR) is quickly becoming an effective technology for training programs. This systematic literature review (SLR) aims to screen works published on AR for ...corporate training. We describe AR training applications, discuss current challenges, literature gaps, opportunities, and tendencies of corporate AR solutions. We structured a protocol to define keywords, semantics of research, and databases used as sources of this SLR. From a primary analysis, we considered 1952 articles in the review for qualitative synthesis. We selected 60 among the selected articles for this study. The survey shows a large number of 41.7% of applications focused on automotive and medical training. Additionally, 20% of selected publications use a camera-display with a tablet device, while 40% refer to head-mounted-displays, and many surveyed approaches (45%) adopt marker-based tracking. Results indicate that publications on AR for corporate training increased significantly in recent years. AR has been used in many areas, exhibiting high quality and provides viable approaches to On-The-Job training. Finally, we discuss future research issues related to increase relevance regarding AR for corporate training.
Mobile augmented reality to support fuselage assembly de Souza Cardoso, Luís Fernando; Mariano, Flávia Cristina Martins Queiroz; Zorzal, Ezequiel Roberto
Computers & industrial engineering,
October 2020, 2020-10-00, Volume:
148
Journal Article
Peer reviewed
One major manufacturing challenge of the fourth industrial revolution is the quality of product development information used in the assembly line. One of the most studied information visualization ...technologies is Augmented Reality (AR), whose deployment via mobile devices is currently being promoted. However, the industrial sector still has doubts regarding the technology’s maturity and the costs incurred by such production processes, restricting its deployment in production environments. Thus, in the present study, we statistically analyze a markerless AR application, using a hand-held mobile device, that addresses the requirements of the structural assemblies used in aeronautical industries comparing them to those of traditional assembly methods. The main technological benefits and limitations of such applications are identified. To perform this analysis, we conducted a field evaluation where qualified professionals marked the positions of small brackets in an aeronautical structure by using AR. After collecting the time and measurement data for each bracket’s position, a statistical analysis was performed to compare these positionings against those achieved using a traditional, metric scale-based method. The results indicate that AR offers a faster solution for highly complex assemblies, despite several limitations regarding the positioning tolerance when using the technology. As a future study, several application modifications are suggested to reduce markup errors and overall usage time.
•An Augmented Reality application to install brackets in aeronautical structures.•Training users for Augmented reality is necessary to improve results.•Lower execution time compared to a traditional method using a metric scale.•The application has best results, considering time, for complex assemblies.•The application supports assemblies whose accepted variation is up to 50 mm.
Augmented and Mixed Reality (AR/MR) technologies enhance the human perception of the world by combining virtual and real environments. With the increase of mobile devices and the advent of 5G, this ...technology has the potential to become part of people’s life. This article aims to evaluate the impact of 5G and beyond mobile networks in the future of AR/MR. To attend to this objective, we surveyed four digital libraries to identify articles and reviews concerning AR/MR use based on mobile networks. The results describe the state-of-the-art of mobile AR/MR applications and the benefits and challenges of the technology. Finally, after the review, we propose a roadmap concerning AR/MR hardware and software development to run applications supported by future mobile networks.
•A Virtual Reality system to assist operative dentistry learning.•Dental cavities can be virtually performed according to simulated dental caries lesions.•Free-hand interaction provides additional ...degrees of freedom and valuable geometrical information.•A study on user acceptance with dentistry professionals is a valuable tool to assess the educational usefulness prior to exposing dental students to this simulator.
Dental preclinical training has been traditionally centered onverbal instructions and subsequent execution on phantom heads and plastic training models. However, these present present limitations. Virtual Reality (VR) and haptic simulators have been proposed with promising results and advantages and have showed usefullness in the preclinical training environment. We designed DENTIFY, a multimodal immersive simulator to assist Operative Dentistry learning, which exposes the user to different virtual clinical scenarios while operating a haptic pen to simulate dental drilling.
The main objective is to assess DENTIFY’s usability, acceptance, and educational usefulness to dentists, in order to make the proper changes and, subsequently, to test DENTIFY with undergraduate preclinical dental students.
DENTIFY combines an immersive head mounted VR display, a haptic pen in which the pen itself has been replaced by a 3D printed model of a dental turbine and a controller with buttons to adjust and select the scenario of the simulation, along with 3D sounds of real dental drilling. The user’s dominant hand operated the virtual turbine on the VR-created scenario, while the non-dominant hand is used to activate the simulator and case selection. The simulation sessions occurred in a controlled virtual environment. We evaluated DENTIFY’s usability and acceptance over the course of 13 training sessions with dental professionals, after the users performed a drilling task in virtual dental tissues.
The conducted user acceptance indicates that DENTIFY shows potencial enhancing learning in operative dentistry as it promotes self-evaluation and multimodal immersion on the dental drilling experience.
DENTIFY presented significant usability and acceptance from trained dentists. This tool showed to have teaching and learning (hence, pedagogical) potential in operative dentistry.
Laparoscopy with augmented reality adaptations Zorzal, Ezequiel Roberto; Campos Gomes, José Miguel; Sousa, Maurício ...
Journal of biomedical informatics,
July 2020, 2020-07-00, 20200701, Volume:
107
Journal Article
Peer reviewed
Display omitted
•A solution to visualise the laparoscopic video while not forcing the surgeon to assume unnecessarily uncomfortable positions.•A completely hands-free approach, using both head gaze ...and foot movement as sources of input.•Improvements to surgeon-to-surgeon communication using the head gaze as a means of pointing.
One of the most promising applications of Optical See-Through Augmented Reality is minimally laparoscopic surgery, which currently suffers from problems such as surgeon discomfort and fatigue caused by looking at a display positioned outside the surgeon’s visual field, made worse by the length of the procedure. This fatigue is especially felt on the surgeon’s neck, as it is strained from adopting unnatural postures in order to visualise the laparoscopic video feed. Throughout this paper, we will present work in Augmented Reality, as well as developments in surgery and Augmented Reality applied to both surgery in general and laparoscopy in particular to address these issues. We applied user and task analysis methods to learn about practices performed in the operating room by observing surgeons in their working environment in order to understand, in detail, how they performed their tasks and achieved their intended goals. Drawing on observations and analysis of video recordings of laparoscopic surgeries, we identified relevant constraints and design requirements. Besides proposals to approach the ergonomic issues, we present a design and implementation of a multimodal interface to enhance the laparoscopic procedure. Our method makes it more comfortable for surgeons by allowing them to keep the laparoscopic video in their viewing area regardless of neck posture. Also, our interface makes it possible to access patient imaging data without interrupting the operation. It also makes it possible to communicate with team members through a pointing reticle. We evaluated how surgeons perceived the implemented prototype, in terms of usefulness and usability, via a think-aloud protocol to conduct qualitative evaluation sessions which we describe in detail in this paper. In addition to checking the advantages of the prototype as compared to traditional laparoscopic settings, we also conducted a System Usability Scale questionnaire for measuring its usability, and a NASA Task Load Index questionnaire to rate perceived workload and to assess the prototype effectiveness. Our results show that surgeons consider that our prototype can improve surgeon-to-surgeon communication using head pose as a means of pointing. Also, surgeons believe that our approach can afford a more comfortable posture throughout the surgery and enhance hand-eye coordination, as physicians no longer need to twist their necks to look at screens placed outside the field of operation.
Purpose
The incidence of diabetes mellitus (DM) is a significant and growing health problem for all countries, regardless of their development level. Providing mobile computing solutions that assist ...the patients in their daily treatment routine can be an excellent ally.
Objective
This systematic review aims to assess how mobile apps for DM treatment follow-up can contribute to improving patients’ quality of life.
Method
We searched the bases ACM Digital Library, PubMed, Springer Link, IEEE Explore, and Science Direct databases. We obtained 1608 primary studies; 1485 were used in the screening phase and 791 in the full screening phase, resulting in 106 articles for data extraction from 2013 to 2018.
Results
We have identified the main functionalities and characteristics necessary for an application for managing DM, such as automation and ease of data collection.
Conclusion
We found that apps for type 1 DM help treat patients, facilitate the collection and access to data, and allow better daily monitoring of treatment.
Este trabalho apresenta uma aplicação de Realidade Aumentada voltada paraapoiar o ensino de conteúdos relacionados ao Sistema Solar, principalmente emsituações onde a visualização da diferença de ...tamanho entre os corpos celestes éimportante. A aplicação possui três experimentos para apoiar o ensino: escala doscorpos celestes do Sistema Solar; animação referente à translação e rotação do Sistema Solar e; a apresentação, em tempo real, das informações referentes ao clima do planeta Terra. A aplicação foi utilizada por alunos do 5º ano do Ensino Fundamental e apresentou resultados positivos no teste de usabilidade efetuado. A aplicação está disponível gratuitamente e pode ser executada em smartphones ou tablets utilizando apenas o navegador nativo de Internet.
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