• Journal of Digital Contents Society
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• v.19 no.2
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• pp.229-236
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• 2018

The background fort this study is related to the concept of modern time and space which has been extended from physical space to virtual space in the present times witnessing the advent of the Fourth Industrial Revolution. Based on visual tactility and illusion in virtual reality, we intended to present the possibility of the interactions as realistic as the interactions occurring in reality. Regarding the scope of this study, we analyzed the relationship between illusion in game space and immersion in interactions based on the games used frequently among current virtual reality contents. The results of the study showed that the interactions in virtual reality occurred within the space converging the time and space and that the illusion of digital images had realistic position of reality without original. Research which investigates the interaction in virtual space and media projection method for real space and virtual space will provide useful basis for promoting technological development based on novel methods differentiated from existing image grammar and for identifying the content utilization methods.

• Journal of Biomedical Engineering Research
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• v.43 no.5
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• pp.361-368
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• 2022

The purpose of this study was to develop a hand rehabilitation training system for hemiplegic patients. We also tried to find out five hand postures (WF: Wrist Flexion, WE: Wrist Extension, BG: Ball Grip, HG: Hook Grip, RE: Rest) in real-time using multi-channel EMG-based deep learning. We performed a pre-processing method that converts to Spider Chart image data for the classification of hand movement from five test subjects (total 1,500 data sets) using Convolution Neural Networks (CNN) deep learning with an 8-channel armband. As a result of this study, the recognition accuracy was 92% for WF, 94% for WE, 76% for BG, 82% for HG, and 88% for RE. Also, ten physical therapists participated for the usability evaluation. The questionnaire consisted of 7 items of acceptance, interest, and satisfaction, and the mean and standard deviation were calculated by dividing each into a 5-point scale. As a result, high scores were obtained in immersion and interest in game (4.6±0.43), convenience of the device (4.9±0.30), and satisfaction after treatment (4.1±0.48). On the other hand, Conformity of intention for treatment (3.90±0.49) was relatively low. This is thought to be because the game play may be difficult depending on the degree of spasticity of the hemiplegic patient, and compensation may occur in patient with weakened target muscles. Therefore, it is necessary to develop a rehabilitation program suitable for the degree of disability of the patient.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.8
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• pp.1359-1365
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• 2006

Digital Koguryo is a virtual reality reconstruction of the Koguryo mural tumulus, Anak No. 3, designed for an interactive educational gaming and learning environment. Digital Koguryo aims at not only developing a digital reconstruction of cultural heritage but also helping young students learn the living style and the custom of Koguryo Kingdom while playing the game environment. This paper describes the digital restoration process of Koguryo mural paintings and 3D structure, as well as the construction of educational virtual environment designed to get more user's interests. It then discusses a few design issues learned from the development and the public demonstration. Finally, it will present the future research directions to improve the users' immersion.

• Journal of Biomedical Engineering Research
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• v.40 no.1
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• pp.15-19
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• 2019

In this study, Theta Gamma Coupling (TGC) analysis was carried out after performing simple and repeated upper limb exercise and comparative experiment to observe changes in the motor cortex of the brain through TGC and to see if mobile rehabilitation therapy is actually effective. As a result, exercise using mobile devices showed higher TGC values in motor cortex as compared with simple repeat upper limb exercise. In addition, paired t-test using SPSS showed statistically significant difference between exercise using mobile devices and simple repeat exercise at P3(t=3.390, df(degree of freedom)=12, p value=0.005). Exercise using mobile devices is effective for rehabilitation because it increases the Theta-Gamma Coupling and activates the motor cortex. Also, since the mobile game contents required the subject to detailed athletic ability adjustment with immersion in the task, it may be thought that brain activation is stronger than simple rehabilitation.

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.133-138
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• 2020

Interaction is an important component in the sense of immersion in augmented reality. However, the function of interaction in augmented reality contents is very weak. Bringing a lot of real environmental information is one of the ways to develop augmented reality, and interaction will naturally develop. In this paper, Leap Motion was used for natural interaction in augmented reality environment through the hand widely used as an interface tool, and extended more from the limited interaction of conventional display touch methods to create a natural interaction. This development of interaction will contribute to the development of various contents as well as augmented reality later.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.579-580
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• 2022

As virtual reality drew attention, VR room escape games were based on the most popular and successful VR content. This study was based on the survey results of citizens who experienced actual VR room escape and field-type room escape. It clarifies the parts that can be implemented and the parts that have technical limitations. And the factors that can increase the immersion of VR room escape games are analyzed. It is hoped that the significance of the research can contribute to the production of more advanced VR escape games and further VR contents.

• Proceedings of the Korea Information Processing Society Conference
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• 2011.04a
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• pp.1592-1594
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• 2011

국가적 차원에서 저소득 청소년을 위한 교육프로그램이 많은 아동보호센터 및 지역센터를 중심으로 시행되고 있지만 그 취지와 목적에 부합하는 방과 후 교육이 제공되고 있는지 그 효과성에 대해서는 주목하지 않아왔다. 본 연구는 저소득 청소년을 위한 방과 후 교육의 질 관리에 대한 필요성이 대두되고 있는 시점에서 영재교육의 일환으로 여겨져 왔던 창의성 교육을 조명하였다. 저소득층 청소년의 창의력 인성을 양성하기 위한 교육용 게임 프로그래밍 수업의 효과성에 대해 조사하였다. A시 5곳의 아동보호시설에서 운영되고 있는 게임프로그래밍 수업에 참여하고 있는 학생과 참여하지 않는 학생을 대상으로 창의적 인성검사를 실시하여 비교 분석하였다. 창의적 인성검사는 크게 자기확신(Self Confidence), 호기심(Curiosity), 인내(Patience), 개방성(Openess), 모험심(Adventure)으로 구분하여 t검증을 통해 유의한가를 분석하였다. 다섯 가지 영역의 평균은 실험집단이 높았으나, 이 중 '인내' 영역이 두드러진 차이를 보였고, 이로 인해 게임프로그래밍 수업을 받은 학생들이 수업을 받지 않은 학생들에 비해 과제 수행에 있어 인내와 끈기를 가지고 도전하는 경향을 보였다. 그러나 자기 확신, 호기심, 개방성, 모험심 네 가지 영역에 대해서는 두드러지는 차이가 나타나지 않았다. 이에 대한 개선책으로 학생들에게 이 네 가지 영역을 균형적으로 길러주기 위하여 체계적으로 강사진의 교수법 연수, 교육과정의 개선, 학생 동기 유발, 학생 독려 및 관리 등 다양한 방법을 통해 수업의 질을 개선시켜 학생들의 창의적 인성 양성에 도움을 줄 수 있을 것으로 기대된다.

• International Journal of Advanced Culture Technology
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• v.12 no.2
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• pp.110-118
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• 2024

This study was conducted to analyze the metaverse usage behavior of college students through in-depth interviews and to explore the characteristics of the major metaverse platforms with a focus on keywords. This study derived elements such as metaverse participation activities, real-world order, metaverse system, presence, and self-expression from previous research. This study examined how college students who use the metaverse perceive these variables. We present the following research results: First, the college students who participated in the study showed interest in content with many interactive elements on the metaverse platform and appeared to participate more actively in such content. Second, college students cited the ability to engage in economic activities in the metaverse as their greatest strength. It was expected that social norms applied in the real world would also be applied in the metaverse. Third, the Metaverse system, such as the Metaverse UI, UX, and servers, was found to be a factor that needs to meet users' expectations and hinders immersion. In this study, the characteristics of the metaverse platform were analyzed, focusing on essential keywords from in-depth interviews. The analysis results are as follows: It was expressed with keywords such as Zepeto has 'avatar' and 'personality expression,' Ifland has 'free decoration' and 'communication convenience,' Gathertown has 'movement convenience' and 'video chat.' Roblox has 'game-based' and 'dynamic.'

• Journal of the Korea Computer Graphics Society
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• v.30 no.3
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• pp.43-49
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• 2024

Hand tracking is currently one of the most promising technologies in XR with the release of extended reality (XR) devices, in which hand tracking is used as the main manipulation. Hand tracking offers advantages in terms of immersion and realism, and as a result, it is being employed in a range of fields, including education, business, and medical care. The archery movement requires using both hands at the same time, but requires sophistication to hit the target and is a movement that has cultural and sports significance in the past. This study aimed to implement this archery movement. Therefore, this paper used the XR Hands package provided by Unity to recognize hand movements, explored the underlying OpenXR, and finally implemented the archery movement and tested it in Meta Quest 2.

• Journal of the Korea Computer Graphics Society
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• v.16 no.1
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• pp.21-27
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• 2010

Today the lectures are usually practiced in a teacher-led traditional classroom system or a student-led e-learning system. Students passively follow the teacher's lectures in both systems, though. Also due to the advances in 3D Computer Graphics and Game technologies, there are trials to exploit the positive effect of games in learning. The serious games, specifically designed games for an educational goal, or existing games for a special class have been used as lectures. Still these games have a great difficulty in being integrated into the educational system technically and economically. Therefore a new 3D MMORPG based lecturing system is presented in this paper. In our new lecturing system, the characteristics of a 3D MMORPG, achievement, sociality, and immersion, are provided to motivate students to participate actively in a lecture. A teacher and students interact with each other in realtime as 3D characters in a 3D virtual classroom on-line. An ordinary teacher can also easily apply our new system to existing classes since a teacher only needs to specify a slide file to prepare a lecture. For the future work, a user study and the effect of our new lecturing system will be performed.