• Proceedings of the Korea Information Processing Society Conference
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• 2016.10a
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• pp.766-767
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• 2016

컴퓨터가 인간의 생활과 밀접해지면서 인간은 사람과 컴퓨터간의 더 효율적인 인터페이스를 갈구하게 되었다. 기존의 VR 컨트롤러들은 버튼으로 이루어져 있어 조작의 감도가 좋지 않다. 이미 VR 시장에서는 VR을 더욱 현실감 있게 즐기기 위한 컨트롤러의 개발에 열을 올리고 있다. 본 연구는 더욱 현실감 있는 VR 컨트롤러를 위해 근전도 센서, IMU 센서 그리고 블루투스 모듈을 이용하는 방법을 제시한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.10
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• pp.1294-1299
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• 2020

Recently, interest in safety education based on VR has been increasing, but it started rising doubts are growing over its effectiveness. Therefore, the purpose of this thesis project is to research the current status of safety education contents based on VR and present situations and future prospects for safety education based on VR. As a result of researching about safety education contents using VR, the movement or condition of characters in the contents in the VR environment was very unnatural. Especially, in simulations such as driving a VR device, the controller was skeptical about its efficiency because the operation was different from the actual environment. As a result, we would like to make suggestions and forecasts as follows: First, the production of real and twin environment in VR should be realized. Second, the natural movement of the character should be performed. Third, various controllers should be released in VR devices. Fourth, a realistic scenario should be developed.

• The Journal of the Korea institute of electronic communication sciences
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• v.18 no.1
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• pp.213-218
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• 2023

In order to use the VR HMD, operation through separate controllers in both hands is required. Methods for text input in VR include a method of selecting virtual keyboard keys on the screen one by one using a controller, a method of inputting through a keyboard that is a resource of a computer by connecting a computer and VR, or a method of inputting through a keyboard that is a resource of a computer by purchasing a wireless keyboard in VR and wireless keyboard connection method. As such, the text input method in current VR equipment causes inconvenience and additional costs to users. For these reasons, most of the VR-related contents are limited to simple functions such as games or viewers, and there is a risk that VR equipment will be recognized as a simple game machine. Therefore, in this study, a multi-input interface using hand tracking provided by the Oculus Quest2 device is designed and partially implemented. Through this, it is expected that various tasks such as document work and business processing as well as games can be conveniently used using VR equipment.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.01a
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• pp.153-154
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• 2020

기존 VR컨트롤러는 현손에 별도의 컨트롤러를 들고 조작해야만 해왔다. 이는 현실감을 느끼기 위한 시각적인 요소를 충족시켰음에도 몰입도를 떨어뜨리는 요소이다. 본 연구에서는 현실감을 더욱 증가 시키는 것을 전제로 뇌파를 이용한 VR컨트롤러 기술을 적용하고자 한다. 현재 대중화 되어 있는 VR 장치들을 보면 움직이는 의자, 보행을 위한 장치, 캐릭터 조종을 위한 손에 쥐는 컨트롤러 등을 사용하고 있다. 이러한 장치들은 가상현실을 더욱 현실처럼 느끼기 위한 보조적인 장치들이지만 장치를 설치하기 위한 공간을 많이 차지하기 때문에 일반 가정에서는 잘 사용하지 않는다. 또한 손에 있는 컨트롤러로 가상 현실속의 동작을 구현하다 보니 아무리 내 눈앞에 보이더라도 '단순한 게임이다'라는 생각을 가지고 있어 몰입도가 떨어질 수밖에 없다. 본 논문은 이러한 문제점들을 개선하기 위해 기존의 VR컨트롤러 대신 뇌파입력을 적용한 '머신러닝을 통한 뇌파 VR컨트롤러' 기술을 제안한다. 기존의 VR컨트롤러와는 다르게 빅 데이터 처리기술인 머신러닝을 이용하여 뇌파 데이터를 처리하고 그 데이터들과 입력되는 뇌파 값을 비교하여 가상현실 속의 캐릭터의 동작을 제어할 수 있다.

• Journal of the Korean Society for Computer Game
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• v.31 no.4
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• pp.129-135
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• 2018

Electronic signatures, QR codes, and bar codes are used in payment systems used in real life. Research has begun on the payment system implemented in the VR environment. This paper proposes a VR electronic sign system that uses hand gesture recognition to implement an existing payment system in a VR environment. In a VR system, you can not hit the keyboard or touch the mouse. There can be several ways to configure a payment system with a VR controller. Electronic signage using hand gesture recognition is one of them, and hand gesture recognition can be classified by the Warping Methods, Statistical Methods, and Template Matching methods. In this paper, the payment system was configured in VR using the $p algorithm belonging to the Template Matching method. To create a VR environment, we implemented a paypal system where actual payment is made using Unity3D and Vive equipment.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.271-284
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• 2020

Good reviews that Half-Life: Alyx received created a turning point for the vitalization of the VR market with an uncertain future due to the absence of a revenue model together with the increased sales of VR equipment. Based on previous studies, this study categorized the characteristics of VR games according to graphs, first-person system, interface, controller, interaction technology, sound and stories. The analysis results show that the seven elements corresponded with "interactions" and "virtual images," which represent the completion level of games as part of VR components, and were connected to one another, which led to the proposal of an upper-rank concept "presence" to put them together. "Immersiveness," which represents users' emotions as part of VR components, was analyzed with the immersion theory to assign tasks of proper difficulty level for users' abilities. In the research process, the Delphi technique and FGI were administered to a panel of 15 experts to ensure objectivity. Finally, "presence" and "immersiveness" are characteristics in proportion to each other and can be valid concepts in future analysis of VR games as well as Half-Life: Alyx, which led to the proposal a new concept framework called 'presence effects' by combining the two words.

• The Journal of the Korea Contents Association
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• v.21 no.6
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• pp.318-326
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• 2021

This study aims to the effectiveness of physical examination using VR contents to solve problems such as the increase in chronic diseases and shortage of professional manpower in the health care field according to the aging and low birth rate, and to provide efficient healthcare. Therefore, this study implemented a one-stop VR content physical examination system by wearing HTC VIVE Pro VR and a stick controller. The system is from step 1 to step 5, and the final body age is determined and a simple solution is provided through five steps sequentially: color blind test, memory test, audiogram test, reaction speed test, and instantaneous cognitive ability test. In addition, for the one-stop VR content physical examination system developed by this study, as a result of verifying the user satisfaction for normal people who visited the health examination center and VR/AR clinical trial center of certified tertiary hospital in Daejeon, the overall satisfaction and the intention to reuse Was high, and according to gender, there was a significant difference in the 5-step test, and according to the age, there were significant differences in the 4-step test and the 5-step test.

• The Journal of the Korea Contents Association
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• v.21 no.9
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• pp.714-722
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• 2021

In this study, intends to propose virtual reality education contents for fundamental nursing skills to develop various teaching methods in nursing education. Blood sugar test & insulin subcutaneous injection among the 20 core fundamental nursing skills is one of that frequently performed and can be used for self-management education for diabetic patients. This study designed a core fundamental nursing skill on immersive VR contents by dividing the learner's experience into three stages: guide, mission, and feedback with these skills. And it is designed by tracking the movement of the hand through finger joint recognition without using a controller for immerse in training. This study will help develop VR nursing education contents that can improve clinical practice competency and the effect of the nursing education.

• The Journal of the Korea Contents Association
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• v.17 no.3
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• pp.222-230
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• 2017

The Ministry of Public Safety and Security plans to expand fire safety education infrastructure to provide customized fire safety education, spread fire safety culture and develop a tailored fire safety education system as a part of the 2016 Citizens' Safety Improvement Policy. This study has also been designed to improve safety problems in the Republic of Korea. Even though safety education has been given, citizens aren't still able to experience a close-to-real situation. In addition, their understanding and satisfaction with the curriculum are very low. Therefore, this study offers VR fire-extinguishing experience education contents as an effective alternative. With a goal of having the participants experience fire extinguishing and evacuation drill in a virtual space, this program has the following advantages: i) safe fire-extinguishing experience; ii) UI to create fun ; iii) useful in fire-extinguishing education; iv) budget saving. we configure the VR fire experience system structure and hardware by applying UX design methodology. We also develop for VR-specific motion recognition plug-in and controller that can be feeling in HMD environment.

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.645-661
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• 2024

Today, the development of new technologies due to the 4th industrial revolution requires work performance methods such as non-face-to-face collaboration. In response to this, various VR collaboration tools are emerging, but VR collaboration tools for brainstorming, which are used in collaboration or design development work, are not provided. Therefore, despite the advantages and possibilities of VR for non-face-to-face collaboration, there are limitations in practical use. Accordingly, the development of VR collaboration tools in a digitalized work environment is necessary, and research on UI design development for this is required. The purpose of this study is to propose a VR collaboration tool prototype by developing an interaction UI design that applies user hand behavior elements that appear during collaboration sessions through user research. This study was a qualitative study. The research method was to conduct user research through observation and in-depth interviews, and as a result of analyzing the data obtained from this, five types of user hand behavior elements were derived. In this study, an interaction UI design was developed that reflects hand gestures as behavioral elements. And using Unity and the Oculus Integration SDK Kit, we created a prototype VR collaboration tool that can be used without a controller. As a result of conducting a user evaluation of the prototype produced in this study, it was found that users had difficulty making hand gestures accurately, and it was possible to find areas for improvement in UI design. It is expected that this study will help develop interaction UI design for VR collaboration tools that can increase work efficiency.