• 한국정보통신학회논문지
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• 제26권4호
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• pp.541-547
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• 2022

가상현실을 활용한 실감형 교육은 전통적 학습에 비하여 몰입과 상호작용을 통해 학생들의 지식 이해도를 높일 수 있다. 기존의 연구에서 가상현실 교육은 주로 경험에 중점을 두었고, 환경 교육을 위한 가상현실 콘텐츠는 많이 개발되지 않았다. 환경 문제는 전 세계적인 문제로 환경 교육은 미래를 위해 필수적이다. 본 연구에서는 환경교육의 중요성을 인식하고 환경 친화적인 행동에 참여할 수 있도록 설계된 몰입형 가상현실 기반의 환경교육 시뮬레이션을 개발했다. 이 시뮬레이션은 가상생태계 모델을 기반으로 하여 환경 요인간의 인과관계와 시공간적 연계와 지속적인 상태를 유지하고 있다. 사용자는 가상에서 환경 요인에 관련된 인터랙션에 따른 결과를 경험하면서 환경 문제를 직관적으로 인식하고 해결 방법에 대한 동기부여를 받는다.

• 대한인간공학회지
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• 제36권5호
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• pp.385-394
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• 2017

Objective: The aim of this study is to investigate how to design effective virtual reality-based training (i.e., virtual training) in maritime safety and to present methods for enhancing interface fidelity by employing immersive interaction and 3D user interface (UI) design. Background: Emerging virtual reality technologies and hardware enable to provide immersive experiences to individuals. There is also a theory that the improvement of fidelity can improve the training efficiency. Such a sense of immersion can be utilized as an element for realizing effective training in the virtual space. Method: As an immersive interaction, we implemented gesture-based interaction using leap motion and Myo armband type sensors. Hand gestures captured from both sensors are used to interact with the virtual appliance in the scenario. The proposed 3D UI design is employed to visualize appropriate information for tasks in training. Results: A usability study to evaluate the effectiveness of the proposed method has been carried out. As a result, the usability test of satisfaction, intuitiveness of UI, ease of procedure learning, and equipment understanding showed that virtual training-based exercise was superior to existing training. These improvements were also independent of the type of input devices for virtual training. Conclusion: We have shown through experiments that the proposed interaction design results are more efficient interactions than the existing training method. The improvement of interface fidelity through intuitive and immediate feedback on the input device and the training information improve user satisfaction with the system, as well as training efficiency. Application: Design methods for an effective virtual training system can be applied to other areas by which trainees are required to do sophisticated job with their hands.

• 한국융합학회논문지
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• 제11권1호
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• pp.119-130
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• 2020

본 연구는 가상현실을 사용한 영어 회화 학습 프로그램을 개발하고 그 효과를 모니터형 가상현실과 몰입형 가상현실 조건에서 비교하였다. 대학생들을 대상으로 학습 전후의 언어불안감을 측정하고, 학습 내용에 대한 기억을 검사하였다. 가상현실에서의 영어 회화 학습 경험 후 학습자들의 언어불안감이 유의미하게 감소되었으나, 두 가상현실 조건간의 차이는 존재하지 않았다. 두 조건의 학습 결과의 차이도 유의하지 않았다. 본 연구의 결과는 가상현실이 학습자의 언어불안감 감소에 효과적일 수 있음을 보여주나, 몰입형 가상현실이 비몰입형 가상현실 보다 더 효과가 우수한지는 아직 분명하지 않은 것으로 보인다. 몰입형 가상현실의 가능성이 적절하게 구현되기 위해서는 몰입형 가상현실에서 종종 보고되는 멀미 문제의 개선과 함께 효과적인 학습 컨텐츠 개발이 우선되어야 할 것으로 보인다.

• 한국CDE학회논문집
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• 제16권4호
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• pp.277-284
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• 2011

In tangible augmented reality (AR) environments for virtual prototyping, the user interacts with virtual products by manipulating tangible objects with his or her hands, but the user often encounter awkward situations in which his or her hands are occluded by augmented virtual objects, which reduces both immersion and ease of interaction. In this paper, we present how to resolve such hand region occlusion in order to enhance natural interaction and immersive visualization. In the AR environment considered, we use two types (product-type and pointer-type) of tangible objects for tangible user interaction with a virtual product of interest. Holding the tangible objects with his or her hands, the user can create input events by touching specified regions of the product-type tangible object with the pointer-type tangible object. We developed a method for resolving hand region occlusion frequently arising during such user interaction, It first detect hand region in a real image and refines the rendered image of the virtual object by subtracting the hand region from the rendered image, Then, it superimposes the refined image onto the real image to obtain an image in which the occlusion is resolved. Incorporated into tangible AR interaction for virtual prototyping of handheld products such as cellular phones and MP3 players, the method has been found by a preliminary user study that it is not only useful to improve natural interaction and immersive visualization of virtual products, but also helpful for making the users experience the products' shapes and functions better.

• International Journal of Internet, Broadcasting and Communication
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• 제15권4호
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• pp.172-177
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• 2023

This study explores the feasibility and potential of using virtual reality (VR) technology to enhance the museum viewing experience through digital media. In an increasingly digital world, museums face the challenge of adapting to changing visitor expectations. This study explores the integration of virtual reality and digital media as a means to engage, educate, and attract museum visitors in a novel, immersive way. By analyzing its advantages, challenges, and practical implications, this study aims to elucidate the feasibility of this transformative approach.

• 국제학술발표논문집
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.1187-1193
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• 2022

A construction site is a highly complex and constantly changing environment, where hazardous areas are difficult to detect if workers lack sufficient knowledge and awareness. Thus, frequent worker safety training is required. Numerous studies on using virtual reality (VR) for safety training were published. While they demonstrate the potential for improving the skills necessary to avoid accidents in the construction industry, they remain difficult to apply at actual construction sites. VR requires specialized hardware and software, limiting workers' access and restricting workers' participation in training sessions. As a result, this paper proposes multiple platforms for immersive virtual reality safety training (VRMP) based on Industry Foundation Classes (IFC) and web technologies such as immersive web (WebXR). The VRMP is compatible with mobile and desktop devices currently by workers and demonstrates scenario models familiar to workers. Also, it reduces development time by utilizing Building Information Models (BIM). Additionally, The VRMP collects data from workers in a virtual environment to assess each worker's safety level, assisting workers in effectively and comfortably gaining a better understanding and raising their awareness. This paper develops a case study based on the VRPM in order to assess its effectiveness.

• 한국컴퓨터그래픽스학회논문지
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• 제24권3호
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• pp.11-20
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• 2018

본 연구는 몰입형 가상현실에 존재하는 다수의 HMD 사용자들에게 보다 향상된 현존감과 만족스러운 경험을 제공하기 위하여 협업기반 다수 사용자 상호작용을 제안한다. 제안하는 다수 사용자 상호작용의 핵심은 가상현실 환경에 존재하는 HMD 사용자가 각자 구분된 역할과 행동을 기반으로 소통과 협업을 통해 상호작용할 수 있는 방향을 제시하는 것이다. 가상협업환경에 존재하는 사용자 각각은 손을 활용하여 가상 환경 또는 가상의 객체와 직접적으로 상호작용하는 기본 구조를 바탕으로 사용자간 소통과 협업을 통해 공동의 목표를 수행해 갈 수 있는 방식(동기화, 의사소통)을 함께 설계한다. 그런 다음 제안하는 다수 사용자 상호작용을 통해 향상된 현존감과 만족하는 경험을 제공하는지를 검증하기 위하여 소통과 협업을 고려한 아케이드 장르의 가상현실 어플리케이션을 제작한다. 그리고 참가자들을 대상으로 한 설문 실험을 진행한다. 이러한 과정들을 통해 제안한 몰입형 가상협업환경에서의 상호작용이 사용자 모두에게 만족하는 현존감과 경험을 제공함을 확인한다.

• International Journal of Knowledge Content Development & Technology
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• 제12권1호
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• pp.85-104
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• 2022

In this study, in line with the era of the fourth industrial revolution, general concepts, technologies, trends, and examples of virtual reality and augmented reality were examined, and based on this, a plan that could be applied to libraries in the future was proposed. As a result of the study, first, it is necessary to construct a smart space as an experiential play space that can satisfy cultural desires transcending time and space by providing immersive contents using 4th technology such as VR and AR. Second, it is necessary to expand experiential cultural support services through VR, AR and MR. Third, to develop educational contents based on augmented reality technology. In order to apply and activate virtual reality and augmented reality in libraries in the future, based on a survey of librarians and users of public libraries, a survey on the application status, satisfaction, and demand of current public libraries should be conducted.

• 정보처리학회논문지B
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• 제12B권1호
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• pp.39-46
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• 2005

몰입형 가상현실 시스템에서는 실제로 가상세계가 입체적으로 가시화된다 할지라도 현실에서와 같이 정확한 거리 및 깊이 단서가 제공되지 않기 때문에, 사용자가 가상객체들과 원활한 상호작용을 하는데 많은 불편함이 있다. 본 논문에서는 이 점을 개선하기 위하여 몰입형 가상세계에서 사용자가 효과적으로 시공간지각을 할 수 있도록 지원해 주는 Visual Guider를 제안한다. Visual Guider는 사용자가 가상객체들 간의 상대적 거리 정보를 신속하고 정확하게 파악할 수 있도록 이차원 윈도우 어플리케이션에서 활용되는 눈금자 개념을 도입하여 삼차원 가상공간상에 적용한 것이다. 본 논문에서는 제안 기법을 $CAVE^(TM)-like$ 시스템 상에서 구현된 실험용 가상공간 상에 적용하여 사용자의 위치 이동과 가상객체의 선택 및 조작에 활용한 결과를 보인다.

• International Journal of Contents
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• 제16권3호
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• pp.18-32
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• 2020

The aim of this study was to perform a meta-analysis of the learning outcomes of immersive learning technologies in English language teaching (ELT). This study examined 12 articles, yielding a total of 20 effect sizes. The Comprehensive Meta-Analysis (CMA) program was employed for data analysis. The findings revealed that the overall effect size was 0.84, implying a large effect size. Additionally, the mean effect sizes of the dependent variables revealed a large effect size for both the cognitive and affective domains. Furthermore, the study analyzed the impact of moderator variables such as sample scale, technology type, tool type, work type, program type, duration (sessions), the degree of immersion, instructional technique, and augmented reality (AR) type. Among the moderators, the degree of immersion was found to be statistically significant. In conclusion, the study results suggested that immersive learning technologies had a positive impact on learning in ELT.