• Proceedings of the Korea Information Processing Society Conference
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• 2019.10a
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• pp.559-562
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• 2019

본 시스템은 4 차 산업 혁명이 발발한 이점을 살려 가상현실(Augmented Reality)을 활용, 극대화된 시각적인 요소들을 추가하여 사용자들의 흥미를 유발한다. 또한 더욱 정확한 평가 기준을 세우기 위해 사용자의 흉부 압박 빠르기와 깊이를 측정할 수 있는 각종 센서를 활용하였다. 관리자는 신뢰성 있는 데이터를 바탕으로 사용자들을 평가한다. 기존의 평가는 평가자의 눈대중, 직감으로만 평가가 이루어지기에 신빙성 및 신뢰를 하기 어렵다. 따라서 사용자들은 현실감 있고 정량화된 데이터를 바탕으로 정확한 평가 및 피드백을 받을 수 있는 교육, 평가가 절실히 필요하다. 따라서 본 논문에서는 가상현실을 활용한 심폐소생술(CPR) 및 자동 제세동기(AED) 교육 평가 시스템을 제안한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2009.04a
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• pp.204-207
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• 2009

채팅 프로그램은 인터넷에서 중요한 기능을 담당하고 있다. 오늘날 많은 사람들이 인터넷에서 채팅을 하고 있다. 이러한 채팅 기능 중 가장 중요하다고 할 수 있는 하나의 기능은 대화 기록을 관리하고 대화의 내용(질문/답변)을 어떻게 일치시키고 저장할 것인가이다. 이러한 문제를 해결하기 위해 많은 방법들이 제시되었지만, Enter-Key를 이용한 채팅의 특성상 이 문제를 완벽히 해결하기에는 역부족이였다. 현재 인터넷 환경은 3차원으로 점차 변화하고 있으며 따라서 채팅 또한 3차원의 가상현실 환경으로 변화하고 있다. 3차원의 채팅은 화려한 그래픽과 아바타를 이용하여 현실과 같은 다양한 컨탠츠를 제공하고 있다. 그러나 대부분의 3차원 채팅 서비스들이 채팅 부분에서는 현실감을 떨어뜨리는 기존의 텍스트 방식을 사용하고 있으며, 관리 방법 또한 전무하다. 본 논문에서는 3차원 공간 정보를 활용하여 실제성을 고려한 채팅 시스템을 제안하고, 이를 이용하여 대화 기록을 효율적으로 관리, 가시화 방법을 제안한다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2021.06a
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• pp.235-238
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• 2021

최근 코로나 19로 인해 비대면 활동이 늘어나고 있다. 비대면 회의, 비대면 강의, 비대면 과제 등이 이에 해당한다. 그에 따라 가상공간을 활용한 활동 또한 많은 관심을 받고 있다. 가상공간에서 인물들 사이 원활한 소통 및 현실감을 위해서는 실사적인 인물묘사가 필요하다. 따라서 실제 인물의 헤어스타일과 유사한 헤어스타일을 자연스럽게 증강시켜주는 것이 매우 중요하다. 본 논문에서는 실사적인 아바타 생성을 위한 헤어스타일의 분류 및 탐색방법을 제안한다. 이를 위해 본 논문에서는 우선 PCA(Principal Component Analysis) 와 K-means clustering 을 통해 헤어스타일에 대한 군집화를 진행한다. 그리고 Shape Indexed features를 이용하여 군집화 된 결과로부터 제일 유사한 헤어스타일 탐색방법을 제안하고 그 효용을 입증하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.05a
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• pp.726-728
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• 2023

동양화 중 산수화는 작가의 회화적 재구성에 기반한 일종의 가상공간이라고 할 수 있다. 실제 북악산·인왕산의 명승명도를 상세하게 묘사한 <백운동>에 실제 지형정보를 대입하여 2.5D 콘텐츠를 구현한 것은 흥미로운 주제라 할 것이다. 본 연구에서는 국토지리정보원에서 제공하는 지형 데이터를 활용하여 <백운동> 그림의 2.5D 콘텐츠를 제작하였다. 이러한 결과를 바탕으로, 향후에는 터치 기반 인터페이스를 통해 인터랙티브 콘텐츠를 구현하거나 AR/VR 기술을 활용하여 현실감 있는 체험을 제공할 수 있을 것으로 기대된다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.21 no.12
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• pp.2312-2317
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• 2017

Museums are converging with digital technology to convey information to viewers in various ways. Augmented reality technology enhances virtual objects seamlessly in the real world, and provides a high sense of immersion and realism because it can use various senses of users in combination with information providing role of exhibits. However, the location-based augmented reality may cause the inaccurate registration of the virtual object with the real world due to the error of the GPS information, and the vision-based augmented reality can be enhanced at the position where the marker is placed. To solve this problem, we implemented the exhibition contents that interact with the real world by using the developed project tango. The exhibited contents were based on Lenovo Phab 2 Pro and Project Tango SDK in Unity 3D. Visitors were able to improve immersion and realism in exhibition contents, and it would be able to combine with various exhibition fields such as shopping malls as well as museums.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.3
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• pp.533-542
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• 2020

In this study, we developed a PC - based motorcycle simulator based on the development technology of the virtual patrol motorcycle training system. In order to get the impression that the motorcycle simulator is operating in a realistic way, it is important to have a reliable signal transmission and operation feeling between the driver and the simulator. In order to achieve this, we developed a system that can apply the sub-systems of the actual vehicle to the motorcycle simulator in order to generate the same operation feeling as the actual vehicle. Based on these results, We have developed a method for generating a feedback queue. Vehicle dynamics simulates real-time vehicle motion by receiving input from a steering wheel, accelerating / decelerating pedal, etc. operated by a driver on a vehicle simulator and transmitting the result to a visual and acoustic system, It is the central element of the simulator to generate. I want to summarize the main requirements of simulation dynamics.

• Science of Emotion and Sensibility
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• v.5 no.4
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• pp.45-49
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• 2002

Recently, virtual environment systems are used in various application fields such as industry, medicine, and training and education. However, the negative effect, cybersickness including nausea, visual fatigue, and disorientation, could be happened while using VR systems. It prevents VR system from spreading much more. To control the cybersickness, first of all, the objective measurement method should be established. As one of alternative methods, the postural instability could be a measure of cybersickness. In this study, 45 participants' postural sway before and after experiencing a H driving simulator was measured by using a force platform. Especially, we examined if two factors, motion and feedback, could affect on the postural instability The results showed the postural instability slightly increased after experiencing the VR driving simulator. For the factors, the providing of motion synchronized to visual display showed statistical significant decrease in postural sway along lateral side. To check the effectiveness of postural instability as a cybersickness measure, further studies are needed.

• Journal of Korea Game Society
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• v.12 no.4
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• pp.45-51
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• 2012

Current virtual game interfaces cannot comprehend our metaphor, cannot reflect on our natural behavior aspect, cannot make us immerse into a game, and makes a barrier between virtual game space and our real behavior. It is very meaningful issue to use real objects tightly related to human-being's behaviors or reactions for interacting with game applications. Interactive Augmented Reality interfaces may augment users' perception of the real world by adding virtual information to it. We attempted an experiment on camera-based non-marker interface for online TCG application. This experiment uses real TCG cards which are recognized by our two phases Image KeyPoint Extraction/Matching Algorithm. These initiative experiments not only enlarge immersion and reality to the game, but also make real and virtual world seamless.

• The Journal of the Korea Contents Association
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• v.8 no.2
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• pp.132-139
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• 2008

The aim on this thesis is to develop virtual construction designing experience web-site in order to help non-professional to predict the actual construction working result by self-construction design, provided by virtual reality program, sharing knowledge of architectural design and materials on internet to solve certain problems. The way of study is using case of virtual reality technology which is practically using in architecture era recently; in construction design, deducting realizable virtual reality technology of limitation and its solution; analyze case of construction designing program which is currently used by professionals; constitute required essential functions as UI(User Interface) when constructing. Followed by result of study, as a proposal, in service, technical, and UI sectors are the way to construct its objectives for internet based virtual construction experience web-site.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.571-572
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• 2022

Recently, VR/AR(virtual reality/augmented reality) contents have actively increased, and various services related to VR/AR allow users to experience remote places. Also, Metaverse technologies based on VR/AR generally used to provide content in virtual spaces. In this paper, we present a technique for synthesizing virtual humans after capturing a 360-degree panorama of a remote environment, and analyze the remote environment to identify the location where it can be captured without error, and apply a method of synthesizing virtual humans. According to this paper, it is possible to provide various captured spaces such as industrial plants, medical facilities, and schools as remote communication media.